Submission #1099441

#	Time	Username	Problem	Language	Result	Execution time	Memory
1099441		vjudge1	XORanges (eJOI19_xoranges)	C++17	55 / 100	1074 ms	2768 KiB

xoranges

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



signed main()
{
   int n, q; cin >> n >> q;
   vector<int> a(n + 1);
   for (int i = 1; i <= n; i++){
       cin >> a[i];
   }
    while(q--){
        int t, l, u; cin >> t >> l >> u;
        int x = 0;
        if (t == 2){
            if ((u - l + 1) % 2 == 0){
            cout << 0 << endl;
            }else{
                for (int i = l; i <= u; i+=2){
                    x ^= a[i];
                }
                cout << x << endl;
            }
        }else{
            a[l] = u;
        }
        
    }
}

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