Submission #360636

#	Time	Username	Problem	Language	Result	Execution time	Memory
360636		tengiz05	XOR Sum (info1cup17_xorsum)	C++17	45 / 100	1669 ms	4204 KiB

xorsum

#include <bits/stdc++.h>
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx,avx2,fma")
using namespace std;
const int MAXN = 1e6+5;
int n;
int a[MAXN];
signed main(){
	ios_base::sync_with_stdio(false);cin.tie(NULL);
	cin >> n;
	for(int i=0;i<n;i++){
		cin >> a[i];
	}
	int ans = 0;
	for(int i=0;i<n;i++){
		for(int j=i;j<n;j++){
			ans ^= a[i] + a[j];
		}
	}cout << ans << '\n';
	return 0;
}

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