oj.uz

답안 #451975

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
451975 2021-08-03T15:05:39 Z fadi57 Cat in a tree (BOI17_catinatree) C++14
0 / 100
 13 ms 23756 KB 
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;
const int mx=1e6+10;
typedef long long ll;
const int mod=1e9+7;
const int MXm=22;
#define F first
#define S second
const int inf=1e9+10;
vector<int>adj[mx];
 int n,d,ans;
  void dfs(int node,int depth,int par){

       if(depth==0){
        ans++;
        depth=d-1;
       }
      // cout<<node<<" "<<depth<<" "<<endl;
     depth--;
     for(auto it:adj[node]){
        if(it==par){
            continue;
        }
        dfs(it,depth,node);
     }
  return;

  }


 int main(){

      cin>>n>>d;
      for(int i=1;i<n;i++){

        int x;
        cin>>x;
        adj[i].push_back(x);
        adj[x].push_back(i);
      }int s;

        for(int i=0;i<n;i++){



       if(adj[i].size()==1){
        s=i;
       }
      }
      dfs(s,d,-1);
      
  cout<<ans+1;
        }

Compilation message

catinatree.cpp: In function 'int main()':
catinatree.cpp:52:10: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
   52 |       dfs(s,d,-1);
      |       ~~~^~~~~~~~

Subtask #1
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 13 ms 23756 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 13 ms 23756 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 13 ms 23756 KB Output isn't correct
2 Halted 0 ms 0 KB -