Submission #763757

#TimeUsernameProblemLanguageResultExecution timeMemory
763757ivopavXORanges (eJOI19_xoranges)C++14
100 / 100
456 ms10700 KiB
#include <bits/stdc++.h> using namespace std; void mjenj(int ind,int val,vector<int>& lis){ ind+=lis.size()/2; lis[ind]=val; while (ind>0){ ind/=2; lis[ind]=lis[ind*2]^lis[ind*2+1]; } } int que(int l,int r,vector<int>& lis,int ind,int l2,int r2){ int lpom=l; int rpom=r; l+=lis.size()/2; r+=lis.size()/2; if (l<=l2 && r>=r2){ return lis[ind]; } if (r<l2 || l>r2){ return 0; } return que(lpom,rpom,lis,ind*2,l2,(l2+r2)/2)^que(lpom,rpom,lis,ind*2+1,(r2+l2)/2+1,r2); } int main(){ int n; int q; cin >> n >> q; vector<int> lisp={0}; vector<int> lisnp={0}; for (int i=0;i<pow(2,(int)(log2(n-1)+1))-1;i++){ lisp.push_back(0); lisnp.push_back(0); } int kolp=0; int kolnp=0; for (int i=0;i<n;i++){ int unos; cin >> unos; if (i%2==0){ lisp.push_back(unos); kolnp++; } else { lisnp.push_back(unos); kolp++; } } for (int i=0;i<kolp;i++){ lisp.push_back(0); } for (int i=0;i<kolnp;i++){ lisnp.push_back(0); } for (int i=0;i<pow(2,(int)(log2(n-1)+1))-n;i++){ lisp.push_back(0); lisnp.push_back(0); } for (int i=pow(2,(int)(log2(n-1)+1))-1;i>0;i--){ lisp[i]=lisp[i*2]^lisp[i*2+1]; lisnp[i]=lisnp[i*2]^lisnp[i*2+1]; } for (int i=0;i<q;i++){ //for (int j=0;j<lisp.size();j++){ // cout << lisp[j] << "\n"; //} int vrs; int br1; int br2; cin >> vrs >> br1 >> br2; br1--; br2--; if (vrs==1){ br2++; if (br1%2==0){ br1/=2; mjenj(br1,br2,lisp); } else { br1/=2; mjenj(br1,br2,lisnp); } } else{ if ((br2-br1+1)%2==0){ cout << "0\n"; continue; } if (br1%2==0){ br1/=2; br2/=2; // cout << br1 << br2 << "\n"; cout << que(br1,br2,lisp,1,1+lisp.size()/2-1,lisp.size()-1) << "\n"; } else { br1/=2; br2/=2; cout << que(br1,br2,lisnp,1,1+lisnp.size()/2-1,lisnp.size()-1) << "\n"; } } } }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...