Submission #1146460

#	Time	Username	Problem	Language	Result	Execution time	Memory
1146460		Nurislam	XOR Sum (info1cup17_xorsum)	C++20	7 / 100	1695 ms	4168 KiB

xorsum

#include <bits/stdc++.h>

using namespace std;

//#define int long long

typedef long long ll;

signed main(){
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr); cout.tie(nullptr);
	
	int n;
	cin >> n;
	vector<int> a(n);
	for(int &i : a)cin >> i;
	
	ll ans = 0;
	for(int i = 0; i < n; i++){
		for(int j = 0; j <= i; j++){
			ans ^= (a[i] + a[j]);
		}
	}
	cout << ans << '\n';
};

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