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escapeplan.py
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escapeplan.py
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import sys; input = sys.stdin.readline
from random import choice
def aug(l):
if vis[l]: return 0
vis[l] = 1
for r in g[l]:
if match[r] == -1 or aug(match[r]): match[r] = l; return 1
return 0
s = 1
while True:
m = int(input())
if m == 0: break
robots = [complex(*map(float, input().split())) for _ in range(m)]
n = int(input())
holes = [complex(*map(float, input().split())) for _ in range(n)]
V = m+n
g = [set() for _ in range(V)]
print('Scenario', s)
for k in [50, 100, 200]:
for i in range(m):
for j in range(n):
if abs(robots[i]-holes[j]) <= k: g[i].add(j+m)
match, mcbm = [-1]*V, 0
free = set(range(m))
nfree = len(free)
for l in list(free):
candidates = [r for r in g[l] if match[r] == -1]
if candidates:
mcbm += 1
free.discard(l)
match[choice(candidates)] = l
for f in free:
vis = [0]*nfree
mcbm += aug(f)
print(f'In {k//10} seconds {mcbm} robot(s) can escape')
s += 1; print()