Submission #1104552

#	Time	Username	Problem	Language	Result	Execution time	Memory
1104552		Ninedesu	Tropical Garden (IOI11_garden)	C++14	49 / 100	5087 ms	5504 KiB

garden

#include "garden.h"
#include "gardenlib.h"
#include<bits/stdc++.h>
using namespace std;

int ans;
vector<int>adj[100001];

void dfs(int u,int p,int P,int G,int dis){
  if(dis==G){
    if(u==P)ans++;
    return ;
  }
  if(adj[u][0]!=p||adj[u].size()==1)dfs(adj[u][0],u,P,G,dis+1);
  else dfs(adj[u][1],u,P,G,dis+1);
}

void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
  for(int i=0; i<M; i++){
    adj[R[i][0]].push_back(R[i][1]);
    adj[R[i][1]].push_back(R[i][0]);
  }

  for(int i=0; i<Q; i++){
    ans=0;
    for(int u=0; u<N; u++){
      dfs(u,-1,P,G[i],0);
    }
    answer(ans);
  }
}

• Subtask 1: 49 / 49
• Subtask 2: 0 / 20
• Subtask 3: 0 / 31