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diff --git a/graph/point_set_tree_path_composite_sum_fixed_root/sol/correct.cpp b/tree/point_set_tree_path_composite_sum_fixed_root/sol/correct.cpp
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diff --git a/graph/rooted_tree_isomorphism_classification/checker.cpp b/tree/rooted_tree_isomorphism_classification/checker.cpp
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diff --git a/math/subset_convolution/checker.cpp b/tree/tree_path_composite_sum/checker.cpp
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rename from datastructure/vertex_add_path_sum/sol/correct.cpp
rename to tree/vertex_add_path_sum/sol/correct.cpp
diff --git a/datastructure/vertex_add_path_sum/sol/naive.cpp b/tree/vertex_add_path_sum/sol/naive.cpp
similarity index 100%
rename from datastructure/vertex_add_path_sum/sol/naive.cpp
rename to tree/vertex_add_path_sum/sol/naive.cpp
diff --git a/datastructure/vertex_add_path_sum/task.md b/tree/vertex_add_path_sum/task.md
similarity index 100%
rename from datastructure/vertex_add_path_sum/task.md
rename to tree/vertex_add_path_sum/task.md
diff --git a/datastructure/vertex_add_path_sum/verifier.cpp b/tree/vertex_add_path_sum/verifier.cpp
similarity index 100%
rename from datastructure/vertex_add_path_sum/verifier.cpp
rename to tree/vertex_add_path_sum/verifier.cpp
diff --git a/math/sum_of_exponential_times_polynomial_limit/checker.cpp b/tree/vertex_add_range_contour_sum_on_tree/checker.cpp
similarity index 100%
rename from math/sum_of_exponential_times_polynomial_limit/checker.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/checker.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/binary_2.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/binary_2.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/binary_2.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/binary_2.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/example_00.in b/tree/vertex_add_range_contour_sum_on_tree/gen/example_00.in
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/example_00.in
rename to tree/vertex_add_range_contour_sum_on_tree/gen/example_00.in
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/example_01.in b/tree/vertex_add_range_contour_sum_on_tree/gen/example_01.in
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/example_01.in
rename to tree/vertex_add_range_contour_sum_on_tree/gen/example_01.in
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/line_1.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/line_1.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/line_1.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/line_1.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/line_2.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/line_2.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/line_2.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/line_2.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/random_large_1.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/random_large_1.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/random_large_1.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/random_large_1.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/random_large_2.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/random_large_2.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/random_large_2.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/random_large_2.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/random_many_addquery_2.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/random_many_addquery_2.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/random_many_addquery_2.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/random_many_addquery_2.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/random_many_sumquery_2.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/random_many_sumquery_2.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/random_many_sumquery_2.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/random_many_sumquery_2.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/random_max_1.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/random_max_1.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/random_max_1.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/random_max_1.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/random_max_2.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/random_max_2.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/random_max_2.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/random_max_2.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/random_medium_1.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/random_medium_1.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/random_medium_1.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/random_medium_1.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/random_medium_2.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/random_medium_2.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/random_medium_2.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/random_medium_2.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/random_small_tree_many_query_1.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/random_small_tree_many_query_1.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/random_small_tree_many_query_1.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/random_small_tree_many_query_1.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/random_small_tree_many_query_2.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/random_small_tree_many_query_2.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/random_small_tree_many_query_2.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/random_small_tree_many_query_2.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/gen/uni_2.cpp b/tree/vertex_add_range_contour_sum_on_tree/gen/uni_2.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/gen/uni_2.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/gen/uni_2.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/hash.json b/tree/vertex_add_range_contour_sum_on_tree/hash.json
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/hash.json
rename to tree/vertex_add_range_contour_sum_on_tree/hash.json
diff --git a/graph/vertex_add_range_contour_sum_on_tree/include/gen_tree.hpp b/tree/vertex_add_range_contour_sum_on_tree/include/gen_tree.hpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/include/gen_tree.hpp
rename to tree/vertex_add_range_contour_sum_on_tree/include/gen_tree.hpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/include/test_case.hpp b/tree/vertex_add_range_contour_sum_on_tree/include/test_case.hpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/include/test_case.hpp
rename to tree/vertex_add_range_contour_sum_on_tree/include/test_case.hpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/include/tree_height.hpp b/tree/vertex_add_range_contour_sum_on_tree/include/tree_height.hpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/include/tree_height.hpp
rename to tree/vertex_add_range_contour_sum_on_tree/include/tree_height.hpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/info.toml b/tree/vertex_add_range_contour_sum_on_tree/info.toml
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/info.toml
rename to tree/vertex_add_range_contour_sum_on_tree/info.toml
diff --git a/graph/vertex_add_range_contour_sum_on_tree/sol/correct.cpp b/tree/vertex_add_range_contour_sum_on_tree/sol/correct.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/sol/correct.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/sol/correct.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/sol/correct_invertible.cpp b/tree/vertex_add_range_contour_sum_on_tree/sol/correct_invertible.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/sol/correct_invertible.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/sol/correct_invertible.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/sol/tle.cpp b/tree/vertex_add_range_contour_sum_on_tree/sol/tle.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/sol/tle.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/sol/tle.cpp
diff --git a/graph/vertex_add_range_contour_sum_on_tree/task.md b/tree/vertex_add_range_contour_sum_on_tree/task.md
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/task.md
rename to tree/vertex_add_range_contour_sum_on_tree/task.md
diff --git a/graph/vertex_add_range_contour_sum_on_tree/verifier.cpp b/tree/vertex_add_range_contour_sum_on_tree/verifier.cpp
similarity index 100%
rename from graph/vertex_add_range_contour_sum_on_tree/verifier.cpp
rename to tree/vertex_add_range_contour_sum_on_tree/verifier.cpp
diff --git a/math/sum_of_floor_of_linear/checker.cpp b/tree/vertex_add_subtree_sum/checker.cpp
similarity index 100%
rename from math/sum_of_floor_of_linear/checker.cpp
rename to tree/vertex_add_subtree_sum/checker.cpp
diff --git a/datastructure/vertex_add_subtree_sum/gen/example_00.in b/tree/vertex_add_subtree_sum/gen/example_00.in
similarity index 100%
rename from datastructure/vertex_add_subtree_sum/gen/example_00.in
rename to tree/vertex_add_subtree_sum/gen/example_00.in
diff --git a/datastructure/vertex_add_subtree_sum/gen/line.cpp b/tree/vertex_add_subtree_sum/gen/line.cpp
similarity index 100%
rename from datastructure/vertex_add_subtree_sum/gen/line.cpp
rename to tree/vertex_add_subtree_sum/gen/line.cpp
diff --git a/datastructure/vertex_add_subtree_sum/gen/max_random.cpp b/tree/vertex_add_subtree_sum/gen/max_random.cpp
similarity index 100%
rename from datastructure/vertex_add_subtree_sum/gen/max_random.cpp
rename to tree/vertex_add_subtree_sum/gen/max_random.cpp
diff --git a/datastructure/vertex_add_subtree_sum/gen/random.cpp b/tree/vertex_add_subtree_sum/gen/random.cpp
similarity index 100%
rename from datastructure/vertex_add_subtree_sum/gen/random.cpp
rename to tree/vertex_add_subtree_sum/gen/random.cpp
diff --git a/datastructure/vertex_add_subtree_sum/gen/small.cpp b/tree/vertex_add_subtree_sum/gen/small.cpp
similarity index 100%
rename from datastructure/vertex_add_subtree_sum/gen/small.cpp
rename to tree/vertex_add_subtree_sum/gen/small.cpp
diff --git a/datastructure/vertex_add_subtree_sum/hash.json b/tree/vertex_add_subtree_sum/hash.json
similarity index 100%
rename from datastructure/vertex_add_subtree_sum/hash.json
rename to tree/vertex_add_subtree_sum/hash.json
diff --git a/datastructure/vertex_add_subtree_sum/info.toml b/tree/vertex_add_subtree_sum/info.toml
similarity index 100%
rename from datastructure/vertex_add_subtree_sum/info.toml
rename to tree/vertex_add_subtree_sum/info.toml
diff --git a/datastructure/vertex_add_subtree_sum/sol/correct.cpp b/tree/vertex_add_subtree_sum/sol/correct.cpp
similarity index 100%
rename from datastructure/vertex_add_subtree_sum/sol/correct.cpp
rename to tree/vertex_add_subtree_sum/sol/correct.cpp
diff --git a/datastructure/vertex_add_subtree_sum/sol/naive.cpp b/tree/vertex_add_subtree_sum/sol/naive.cpp
similarity index 100%
rename from datastructure/vertex_add_subtree_sum/sol/naive.cpp
rename to tree/vertex_add_subtree_sum/sol/naive.cpp
diff --git a/datastructure/vertex_add_subtree_sum/task.md b/tree/vertex_add_subtree_sum/task.md
similarity index 100%
rename from datastructure/vertex_add_subtree_sum/task.md
rename to tree/vertex_add_subtree_sum/task.md
diff --git a/datastructure/vertex_add_subtree_sum/verifier.cpp b/tree/vertex_add_subtree_sum/verifier.cpp
similarity index 100%
rename from datastructure/vertex_add_subtree_sum/verifier.cpp
rename to tree/vertex_add_subtree_sum/verifier.cpp
diff --git a/math/sum_of_totient_function/checker.cpp b/tree/vertex_get_range_contour_add_on_tree/checker.cpp
similarity index 100%
rename from math/sum_of_totient_function/checker.cpp
rename to tree/vertex_get_range_contour_add_on_tree/checker.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/binary_2.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/binary_2.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/binary_2.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/binary_2.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/example_00.in b/tree/vertex_get_range_contour_add_on_tree/gen/example_00.in
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/example_00.in
rename to tree/vertex_get_range_contour_add_on_tree/gen/example_00.in
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/example_01.in b/tree/vertex_get_range_contour_add_on_tree/gen/example_01.in
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/example_01.in
rename to tree/vertex_get_range_contour_add_on_tree/gen/example_01.in
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/line_1.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/line_1.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/line_1.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/line_1.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/line_2.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/line_2.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/line_2.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/line_2.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/random_large_1.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/random_large_1.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/random_large_1.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/random_large_1.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/random_large_2.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/random_large_2.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/random_large_2.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/random_large_2.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/random_many_addquery_2.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/random_many_addquery_2.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/random_many_addquery_2.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/random_many_addquery_2.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/random_many_getquery_2.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/random_many_getquery_2.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/random_many_getquery_2.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/random_many_getquery_2.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/random_max_1.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/random_max_1.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/random_max_1.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/random_max_1.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/random_max_2.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/random_max_2.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/random_max_2.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/random_max_2.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/random_medium_1.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/random_medium_1.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/random_medium_1.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/random_medium_1.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/random_medium_2.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/random_medium_2.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/random_medium_2.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/random_medium_2.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/random_small_tree_many_query_1.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/random_small_tree_many_query_1.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/random_small_tree_many_query_1.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/random_small_tree_many_query_1.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/random_small_tree_many_query_2.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/random_small_tree_many_query_2.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/random_small_tree_many_query_2.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/random_small_tree_many_query_2.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/gen/uni_2.cpp b/tree/vertex_get_range_contour_add_on_tree/gen/uni_2.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/gen/uni_2.cpp
rename to tree/vertex_get_range_contour_add_on_tree/gen/uni_2.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/hash.json b/tree/vertex_get_range_contour_add_on_tree/hash.json
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/hash.json
rename to tree/vertex_get_range_contour_add_on_tree/hash.json
diff --git a/graph/vertex_get_range_contour_add_on_tree/include/gen_tree.hpp b/tree/vertex_get_range_contour_add_on_tree/include/gen_tree.hpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/include/gen_tree.hpp
rename to tree/vertex_get_range_contour_add_on_tree/include/gen_tree.hpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/include/test_case.hpp b/tree/vertex_get_range_contour_add_on_tree/include/test_case.hpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/include/test_case.hpp
rename to tree/vertex_get_range_contour_add_on_tree/include/test_case.hpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/include/tree_height.hpp b/tree/vertex_get_range_contour_add_on_tree/include/tree_height.hpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/include/tree_height.hpp
rename to tree/vertex_get_range_contour_add_on_tree/include/tree_height.hpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/info.toml b/tree/vertex_get_range_contour_add_on_tree/info.toml
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/info.toml
rename to tree/vertex_get_range_contour_add_on_tree/info.toml
diff --git a/graph/vertex_get_range_contour_add_on_tree/sol/correct.cpp b/tree/vertex_get_range_contour_add_on_tree/sol/correct.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/sol/correct.cpp
rename to tree/vertex_get_range_contour_add_on_tree/sol/correct.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/sol/correct_invertible.cpp b/tree/vertex_get_range_contour_add_on_tree/sol/correct_invertible.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/sol/correct_invertible.cpp
rename to tree/vertex_get_range_contour_add_on_tree/sol/correct_invertible.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/sol/tle.cpp b/tree/vertex_get_range_contour_add_on_tree/sol/tle.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/sol/tle.cpp
rename to tree/vertex_get_range_contour_add_on_tree/sol/tle.cpp
diff --git a/graph/vertex_get_range_contour_add_on_tree/task.md b/tree/vertex_get_range_contour_add_on_tree/task.md
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/task.md
rename to tree/vertex_get_range_contour_add_on_tree/task.md
diff --git a/graph/vertex_get_range_contour_add_on_tree/verifier.cpp b/tree/vertex_get_range_contour_add_on_tree/verifier.cpp
similarity index 100%
rename from graph/vertex_get_range_contour_add_on_tree/verifier.cpp
rename to tree/vertex_get_range_contour_add_on_tree/verifier.cpp
diff --git a/math/tetration_mod/checker.cpp b/tree/vertex_set_path_composite/checker.cpp
similarity index 100%
rename from math/tetration_mod/checker.cpp
rename to tree/vertex_set_path_composite/checker.cpp
diff --git a/datastructure/vertex_set_path_composite/gen/almost_line.cpp b/tree/vertex_set_path_composite/gen/almost_line.cpp
similarity index 100%
rename from datastructure/vertex_set_path_composite/gen/almost_line.cpp
rename to tree/vertex_set_path_composite/gen/almost_line.cpp
diff --git a/datastructure/vertex_set_path_composite/gen/example_00.in b/tree/vertex_set_path_composite/gen/example_00.in
similarity index 100%
rename from datastructure/vertex_set_path_composite/gen/example_00.in
rename to tree/vertex_set_path_composite/gen/example_00.in
diff --git a/datastructure/vertex_set_path_composite/gen/example_01.in b/tree/vertex_set_path_composite/gen/example_01.in
similarity index 100%
rename from datastructure/vertex_set_path_composite/gen/example_01.in
rename to tree/vertex_set_path_composite/gen/example_01.in
diff --git a/datastructure/vertex_set_path_composite/gen/line.cpp b/tree/vertex_set_path_composite/gen/line.cpp
similarity index 100%
rename from datastructure/vertex_set_path_composite/gen/line.cpp
rename to tree/vertex_set_path_composite/gen/line.cpp
diff --git a/datastructure/vertex_set_path_composite/gen/long-path-decomposition_killer.cpp b/tree/vertex_set_path_composite/gen/long-path-decomposition_killer.cpp
similarity index 100%
rename from datastructure/vertex_set_path_composite/gen/long-path-decomposition_killer.cpp
rename to tree/vertex_set_path_composite/gen/long-path-decomposition_killer.cpp
diff --git a/datastructure/vertex_set_path_composite/gen/max_random.cpp b/tree/vertex_set_path_composite/gen/max_random.cpp
similarity index 100%
rename from datastructure/vertex_set_path_composite/gen/max_random.cpp
rename to tree/vertex_set_path_composite/gen/max_random.cpp
diff --git a/datastructure/vertex_set_path_composite/gen/random.cpp b/tree/vertex_set_path_composite/gen/random.cpp
similarity index 100%
rename from datastructure/vertex_set_path_composite/gen/random.cpp
rename to tree/vertex_set_path_composite/gen/random.cpp
diff --git a/datastructure/vertex_set_path_composite/gen/small.cpp b/tree/vertex_set_path_composite/gen/small.cpp
similarity index 100%
rename from datastructure/vertex_set_path_composite/gen/small.cpp
rename to tree/vertex_set_path_composite/gen/small.cpp
diff --git a/datastructure/vertex_set_path_composite/hash.json b/tree/vertex_set_path_composite/hash.json
similarity index 100%
rename from datastructure/vertex_set_path_composite/hash.json
rename to tree/vertex_set_path_composite/hash.json
diff --git a/datastructure/vertex_set_path_composite/info.toml b/tree/vertex_set_path_composite/info.toml
similarity index 100%
rename from datastructure/vertex_set_path_composite/info.toml
rename to tree/vertex_set_path_composite/info.toml
diff --git a/datastructure/vertex_set_path_composite/sol/correct.cpp b/tree/vertex_set_path_composite/sol/correct.cpp
similarity index 100%
rename from datastructure/vertex_set_path_composite/sol/correct.cpp
rename to tree/vertex_set_path_composite/sol/correct.cpp
diff --git a/datastructure/vertex_set_path_composite/sol/naive.cpp b/tree/vertex_set_path_composite/sol/naive.cpp
similarity index 100%
rename from datastructure/vertex_set_path_composite/sol/naive.cpp
rename to tree/vertex_set_path_composite/sol/naive.cpp
diff --git a/datastructure/vertex_set_path_composite/task.md b/tree/vertex_set_path_composite/task.md
similarity index 100%
rename from datastructure/vertex_set_path_composite/task.md
rename to tree/vertex_set_path_composite/task.md
diff --git a/datastructure/vertex_set_path_composite/verifier.cpp b/tree/vertex_set_path_composite/verifier.cpp
similarity index 100%
rename from datastructure/vertex_set_path_composite/verifier.cpp
rename to tree/vertex_set_path_composite/verifier.cpp