Submission #646401

#	Time	Username	Problem	Language	Result	Execution time	Memory
646401		murad_2005	XOR Sum (info1cup17_xorsum)	C++17	45 / 100	616 ms	1252 KiB

xorsum

#include<bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2")
#pragma GCC optimize("unroll-loops")

using namespace std;

const int up = 1e5 + 5;

int a[up];

void solve(){
    int n;
    cin >> n;
    int Res = 0;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        for(int j = 1; j <= i; j++){
            Res^=(a[i]+a[j]);
        }
    }
    cout << Res;
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int t;
    t = 1;
    // cin >> t;
    while(t--){
        solve();
    }
}

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