Submission #1118595

#	Time	Username	Problem	Language	Result	Execution time	Memory
1118595		pera	Speedrun (RMI21_speedrun)	C++17	0 / 100	329 ms	1196 KiB

speedrun

#include<bits/stdc++.h>
#include "speedrun.h"
using namespace std;/*
int v;
vector<int> val(100);
vector<vector<int>> G(100);
void setHintLen(int x){

}
void setHint(int u , int bit , int x){
   val[u] += x * (1 << bit);
}
int getHint(int bit){
   return val[v] >> bit & 1;
}
bool goTo(int u){
   bool good = false;
   for(int V : G[v]){
      if(V == u){
         good = true;
         v = u;
      }
   }
   return good;
}*/
void assignHints(int subtask , int N , int A[] , int B[]){
   vector<vector<int>> g(N + 1);
   for(int i = 1;i <= N - 1;i ++){
      g[A[i]].emplace_back(B[i]);
      g[B[i]].emplace_back(A[i]);
   }
   vector<int> par(N + 1) , o;
   function<void(int)> dfs = [&](int u){
      o.emplace_back(u);
      for(int v : g[u]){
         if(v != par[u]){
            par[v] = u;
            dfs(v);
         }
      }
   };
   dfs(1);
   setHintLen(20);
   for(int i = 1;i <= N;i ++){
      for(int bit = 0;bit < 10;bit ++){
         setHint(i , bit + 1, par[i] >> bit & 1);
      } 
      for(int bit = 0;bit < 10;bit ++){
         setHint(i , bit + 10 + 1 , o[i % N] >> bit & 1);
      }
   }
}
void speedrun(int subtask , int N , int v){
   int c = 1;
   while(c < N){
      int nxt = 0;
      for(int bit = 0;bit < 10;bit ++){
         nxt += (1 << bit) * getHint(bit + 10 + 1);
      }
      while(goTo(nxt) == false){
         int par = 0;
         for(int bit = 0;bit < 10;bit ++){
            par += (1 << bit) * getHint(bit + 1);
         }
         goTo(par);
      }
      ++c;
      v = nxt;
   }
   return;
}/*
int main(){
   int N;
   cin >> N >> v;
   int A[N] , B[N]; 
   for(int i = 1;i < N;i ++){
      int u , vx;
      cin >> u >> vx;
      G[u].emplace_back(vx);
      G[vx].emplace_back(u);
      A[i] = u , B[i] = vx;
   }
   assignHints(0 , N , A , B);
   speedrun(0 , N , v);
}*/

• Subtask 1: 0 / 21
• Subtask 2: 0 / 8
• Subtask 3: 0 / 19
• Subtask 4: 0 / 12
• Subtask 5: 0 / 40