Submission #1258442

#TimeUsernameProblemLanguageResultExecution timeMemory
1258442SalihSahinSob (COCI19_sob)C++20
39 / 110
215 ms8636 KiB
#include "bits/stdc++.h"
#define pb push_back
#define int long long
using namespace std;

const int inf = 1e15;
const int N = 1e6 + 5;

int32_t main(){
   ios_base::sync_with_stdio(0);
   cin.tie(0), cout.tie(0);
   int n, m;
   cin>>n>>m;

   vector<int> ans(n);
   for(int i = 0; i < n; i++){
      ans[i] = i;
   }

   for(int i = 0; i < 21; i++){
      int bt = (1 << i);
      vector<int> updans = ans;
      vector<int> type[2][2];
      for(int j = 0; j < n; j++){
         type[(j&bt) > 0][(updans[j]&bt) > 0].pb(j);
      }
      
      if((m&bt)){
         int ind = 0;
         for(auto itr: type[1][1]){
            swap(updans[itr], updans[type[0][0][ind]]);
            ind++;
         }

         for(int j = 0; j < n; j++){
            updans[j] += bt;
         }
      }
      else{
         for(int j = 0; j < n; j++){
            int a = ((j&bt) > 0);
            int b = ((updans[j]&bt) > 0);

            if(a == 1 && b == 0){
               for(int k = 0; k < j; k++){
                  int val = (1 << k);
                  if(!(j & val)) continue;
                  int ain = (((j - val)&bt) > 0);
                  int bin = ((updans[j - val]&bt) > 0);
                  if(ain == 0 && bin == 1){
                     swap(updans[j], updans[j - val]);
                     break;
                  }
               }
            }
         }
      }
      swap(updans, ans);
   }

   for(int i = 0; i < n; i++){
      cout<<i<<" "<<ans[i]<<endl;
   }
   return 0; 
}
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