Submission #389227

#	Time	Username	Problem	Language	Result	Execution time	Memory
389227		rk42745417	XOR Sum (info1cup17_xorsum)	C++17	7 / 100	1697 ms	8800 KiB

xorsum

#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';
}

• Subtask 1: 7 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 21
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23