제출 #965345

#제출 시각아이디문제언어결과실행 시간메모리
965345akacool445kArranging Shoes (IOI19_shoes)C++14
15 / 100
19 ms3164 KiB
#include "shoes.h" long long count_swaps(std::vector<int> s) { long long n = s.size() / 2; return n * (n - 1) / 2; }
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