Submission #1312776

#	Time	Username	Problem	Language	Result	Execution time	Memory
1312776		Ekber_Ekber	XOR Sum (info1cup17_xorsum)	C++20	7 / 100	1695 ms	8248 KiB

xorsum

#include <bits/stdc++.h>
#define GOOD_LUCK ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define int long long
#define endl "\n"
#define ff first
#define ss second
#define pb push_back
#define all(v) v.begin(), v.end()
using namespace std;

constexpr int MAX = 2e+5 + 1, INF = 2e+16, MOD = 1e+9 + 7, K = 31;

void _() {
    int n;
    cin >> n;
    vector <int> v(n);
    for (int &i : v) cin >> i;
    int res=0;
    for (int i = 0; i < n; i++) {
        for (int j = i; j < n; j++) {
            res ^= (v[i] + v[j]);
        }
    }
    cout << res;
}

signed main() {

    GOOD_LUCK

    int tests=1;
    // cin >> tests;
    for (int i=1; i <= tests; i++) {
        _();
        cout << endl;
    }

    return 0;
}

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