Submission #717535

#	Time	Username	Problem	Language	Result	Execution time	Memory
717535		Darren0724	XOR Sum (info1cup17_xorsum)	C++17	0 / 100	72 ms	12748 KiB

xorsum

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()
const int INF=1e9;


signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;cin>>n;
    vector<int> v(n);
    for(int i=0;i<n;i++){
        cin>>v[i];
    }
    int ans=0;
    int now=0;
    for(int i=0;i<n;i++){
        now^=v[i];
        if(i%2==0){
            ans^=(now+v[i]);
        }
        else{
            ans^=now;
        }
    }
    cout<<ans<<endl;



    return 0;
}

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