day01

#!/usr/bin/awk -f
!/^$/ { s += $0 }

/^$/ {
    if (s > a) {
        c = b
        b = a
        a = s
    }
    else if (s > b) {
        c = b
        b = s
    }
    else if (s > c) { c = s }

    s = 0
}

END { print a "\n" a + b + c }