Submission #1099441

#TimeUsernameProblemLanguageResultExecution timeMemory
1099441vjudge1XORanges (eJOI19_xoranges)C++17
55 / 100
1074 ms2768 KiB
#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; } } }
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