Submission #1219183

#	Time	Username	Problem	Language	Result	Execution time	Memory
1219183		nataliaa	XORanges (eJOI19_xoranges)	C++20	0 / 100	1097 ms	1828 KiB

xoranges

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

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