Submission #1219627

#	Time	Username	Problem	Language	Result	Execution time	Memory
1219627		durdona	XORanges (eJOI19_xoranges)	C++17	0 / 100	1096 ms	2088 KiB

xoranges

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

#define int long long

void solve(){
    int n, q;
    cin >> n >> q;
    vector<int> arr(n);
    for (int i = 0; i < n; i ++) cin >> arr[i];

    for (int i = 0; i < q; i ++){
        int s,l,r;
        cin >> s >> l >> r;
        if (s == 1){
            arr[l - 1] = r;
        }
        else{
            int m = 0;
            for (int j = l - 1; j < r; j ++){
                if (((j - (l - 1) + 1) * (r - i)) % 2 ==1) m ^= arr[j];
            }
            cout << m << "\n";
        }
    }
    
}


signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1;
    //cin >> t;
    while (t--) {
        solve();
        cout << "\n";
    }
}

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