Submission #1089784

#	Time	Username	Problem	Language	Result	Execution time	Memory
1089784		LilPluton	XOR Sum (info1cup17_xorsum)	C++14	7 / 100	1648 ms	20560 KiB

xorsum

#include <bits/stdc++.h>
using namespace std;
#define int long long

void solve(){
    int n;
    cin >> n;
    vector<int>pr(n + 1, 0), a(n);
    for(int i = 0; i < n; ++i){
        cin >> a[i];
        pr[i + 1] = pr[i] + a[i];
    }
    int res = 0;
    for(int i = 1; i <= n; ++i){
        for(int j = i; j <= n; ++j){
            int f = a[i - 1] + a[j - 1];
            res ^= f;
        }
    }
    cout << res << endl;
}


signed main(){
    int t = 1;
    while(t--){
        solve();
    }
}

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