| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1139267 | stdfloat | XOR Sum (info1cup17_xorsum) | C++20 | 1695 ms | 4168 KiB |
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
ios::sync_with_stdio(false); cin.tie(nullptr);
int n;
cin >> n;
vector<int> a(n);
for (auto &i : a)
cin >> i;
int ans = 0;
for (int i = 0; i < n; i++) {
for (int j = i; j < n; j++)
ans ^= (a[i] + a[j]);
}
cout << ans;
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