제출 #1203122

#제출 시각아이디문제언어결과실행 시간메모리
1203122SpyrosAlivArranging Shoes (IOI19_shoes)C++20
15 / 100
13 ms2636 KiB
#include <bits/stdc++.h>
using namespace std;
#define ll long long

int n;
vector<int> a;

ll count_swaps(vector<int> s) {
    n = s.size();
    a = s;
    n /= 2;
    int init = n;
    ll ans = 0;
    for (int i = 1; i <= n; i++) ans += (n - i);
    return ans;
}
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