제출 #1146437

#제출 시각아이디문제언어결과실행 시간메모리
1146437crispxxXOR Sum (info1cup17_xorsum)C++20
7 / 100
1695 ms4168 KiB
/** * author: a.k * created: idk **/ #include <bits/stdc++.h> using namespace std; #define all(x) x.begin(), x.end() #define pb push_back #define nl '\n' const int N = 4e3 + 1; int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int n; cin >> n; vector<int> a(n); for(auto &u : a) cin >> u; int res = 0; for(int i = 0; i < n; i++) { for(int j = i; j < n; j++) { res ^= (a[i] + a[j]); } } cout << res << nl; }
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