Submission #521803

#	Time	Username	Problem	Language	Result	Execution time	Memory
521803		boykut	XOR Sum (info1cup17_xorsum)	C++14	7 / 100	1688 ms	8012 KiB

xorsum

#include <bits/stdc++.h>

using namespace std ;

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin >> n;
	long long a[n];
	for (int i = 0; i < n; i++) {
		cin >> a[i];
	}
	long long x = 0;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j <= i; j++) {
			x ^= (a[i] + a[j]);
		}
	}
	cout << x << '\n';
	return 0;
}

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