제출 #924341

#제출 시각아이디문제언어결과실행 시간메모리
924341aykhnLove Polygon (BOI18_polygon)C++17
0 / 100
0 ms348 KiB
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define inf 0x3F3F3F3F

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(nullptr);
    int n;
    cin >> n;
    cout << (n & 1 ? -1 : n) << '\n';
}
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