Submission #446777

#	Time	Username	Problem	Language	Result	Execution time	Memory
446777		osmanallazov	XORanges (eJOI19_xoranges)	C++14	55 / 100	1094 ms	2324 KiB

xoranges

#include <bits/stdc++.h>
#define ll long long
using namespace std;
int main(){
    ll n,q,l,r,s;
    cin>>n>>q;
    ll a[n+1];
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    while(q--){
        cin>>s>>l>>r;
        if(s==1){
            a[l]=r;
        }
        else{
            if(l%2!=r%2){
                cout<<0<<endl;
            }
            else{
                ll ans=0;
                for(int i=l;i<=r;i+=2){
                    ans^=a[i];
                }
                cout<<ans<<endl;
            }
        }
    }
}

• Subtask 1: 12 / 12
• Subtask 2: 18 / 18
• Subtask 3: 25 / 25
• Subtask 4: 0 / 20
• Subtask 5: 0 / 25