Submission #951906

#	Time	Username	Problem	Language	Result	Execution time	Memory
951906		__Davit__	XOR Sum (info1cup17_xorsum)	C++17	0 / 100	166 ms	5024 KiB

xorsum

#include <bits/stdc++.h>

#define ll long long
#define lld long double
#define ff first
#define ss second
#define pb push_back
#define vr(v) v.begin(),v.end()
#define rv(v) v.rbegin(),v.rend()

using namespace std;
const int MOD = 1e9 + 7;


void solve() {
    int n;
    cin >> n;
    ll ans = 0;
    for (int i = 0; i < n; i++) {
        ll x;
        cin >> x;
        ans ^= (x + x);
    }
    cout << ans << endl;
}

int main() {
    int t = 1;
//    cin >> t;
    while (t--)solve();
}

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