제출 #1334558

#제출 시각아이디문제언어결과실행 시간메모리
1334558ensonArranging Shoes (IOI19_shoes)C++20
10 / 100
0 ms344 KiB
#include <bits/stdc++.h>
using namespace std;


long long count_swaps(vector<int>S){
    if (S.size() == 2){
        if (S[0] < 0) return 0;
        return 1;
    }
    return (S.size()/2) * (S.size()/2+1) / 2;
}
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