제출 #331528

#제출 시각아이디문제언어결과실행 시간메모리
331528blueArranging Shoes (IOI19_shoes)C++17
15 / 100
28 ms3200 KiB
#include "shoes.h"
#include <vector>
using namespace std;

long long count_swaps(vector<int> S)
{
    long long n = S.size()/2;
    return (n-1)*n/2;
}
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