Submission #908534

#	Time	Username	Problem	Language	Result	Execution time	Memory
908534		speedcode	XORanges (eJOI19_xoranges)	C++17	55 / 100	1061 ms	6748 KiB

xoranges

#include <bits/stdc++.h>
using namespace std;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n,q;
    cin >> n >> q;
    long long values[n];
    for(int i = 0; i < n; i++) cin >> values[i];
    int index, l, k, typ;
    long long res;
    for(int _i = 0; _i < q; _i++){
        cin >> typ;
        if(typ==1){
            int index;
            cin >> index;
            cin >> values[index-1];
        } else {
            cin >> l >> k;
            res = 0;
            if((l-k)%2 == 0){
                for(int i = l-1; i < k; i+= 2){
                    res = res ^ values[i];
                }
            }

            cout << res << '\n';
        }   
    }
}

Compilation message (stderr)

xoranges.cpp: In function 'int main()':
xoranges.cpp:11:9: warning: unused variable 'index' [-Wunused-variable]
   11 |     int index, l, k, typ;
      |         ^~~~~

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