Submission #389317

#	Time	Username	Problem	Language	Result	Execution time	Memory
389317		wiwiho	XOR Sum (info1cup17_xorsum)	C++14	7 / 100	1695 ms	4172 KiB

xorsum

#include <bits/stdc++.h>

#define mp make_pair
#define F first
#define S second
#define eb emplace_back
#define printv(a, b) { \
    for(auto pv : a) b << pv << " "; \
    b << "\n"; \
}

using namespace std;

using pii = pair<int, int>;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n;
    cin >> n;

    vector<int> v(n + 1);
    int ans = 0;
    for(int i = 1; i <= n; i++){
        cin >> v[i];
        for(int j = 1; j <= i; j++){
            ans ^= v[i] + v[j];
        }
    }
    cout << ans << "\n";

    return 0;
}

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