Submission #496848

#	Time	Username	Problem	Language	Result	Execution time	Memory
496848		AQ0212	XOR Sum (info1cup17_xorsum)	C++17	7 / 100	1632 ms	2620 KiB

xorsum

#include <iostream>
#include <algorithm>
#include <cmath>
#include <set>
#include <map>
#include <vector>
#include <string>
#include <sstream>
#include <cstring>

#define ll long long int
#define pb push_back
#define pf push_front
#define fi first
#define se second
#define all(x) x.begin(), x.end()

using namespace std;

ll ans, a[ 100111 ];

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

    ll n;

    cin >> n;

    for(int i = 1; i <= n; i ++){
        cin >> a[ i ];
    }

    for(int i = 1; i <= n; i ++){
        for(int j = i; j <= n; j ++){
            ans ^= (a[ i ] + a[ j ]);
        }
    }

    cout << ans;
}

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