Submission #1100123

#TimeUsernameProblemLanguageResultExecution timeMemory
1100123_snoopy_XORanges (eJOI19_xoranges)C++17
30 / 100
1059 ms3924 KiB
#include <bits/stdc++.h> using namespace std; long long int arr[1000010]; int main(){ long long int n, q, i, j, k, a, b, c, x, d; cin>>n>>q; for(i=1; i<=n; i++){ cin>>arr[i]; } for(i=0; i<q; i++){ cin>>a>>b>>c; if(a==1){ arr[b]=c; } else{ x=0; // for(j=b+1; j<=c; j++){ // x=x^arr[j]; // } //cout<<x<<endl; for(j=b; j<=c; j++){ d=0; for(k=j; k<=c; k++){ d=d^arr[k]; x=x^d; } } cout<<x<<endl; } } return 0; }
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