제출 #389227

#제출 시각아이디문제언어결과실행 시간메모리
389227rk42745417XOR Sum (info1cup17_xorsum)C++17
7 / 100
1697 ms8800 KiB
#include <bits/stdc++.h> using namespace std; #define EMT ios::sync_with_stdio(0); cin.tie(0); using ll = int64_t; using ull = uint64_t; using uint = uint32_t; using ld = long double; const int INF = 0x3f3f3f3f; const int MOD = 1e9 + 7; const ll LINF = 1e18; const double EPS = 1e-9; signed main() { int n; cin >> n; vector<int> arr(n); for(int &a : arr) cin >> a; int ans = 0; for(int i = 0; i < n; i++) for(int j = i; j < n; j++) ans ^= arr[i] + arr[j]; cout << ans << '\n'; }
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