Submission #866211

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Source Code Expand

#include <cstdio>
#include <vector>
using namespace std;

vector<vector<int> > e;
int dep[100000];
int K,C;
int n;
int a[100000];

void dfs(int i)
{
  dep[i]=0;
  for(int x=0;x<e[i].size();x++){
    int j=e[i][x];
    dfs(j);
    dep[i]=max(dep[i],dep[j]+1);
  }
  if(i!=0&&dep[i]==K-1&&a[i]!=0){
    C++;
    dep[i]=-1;
  }
}


int main()
{
  scanf("%d%d",&n,&K);
  for(int i=0;i<n;i++){
    scanf("%d",a+i);
    a[i]--;
  }
  C=0;
  if(a[0]!=0){
    C++;
    a[0]=0;
  }
  e=vector<vector<int> >(n);
  for(int i=1;i<n;i++){
    e[a[i]].push_back(i);
  }
  dfs(0);
  printf("%d\n",C);
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:28:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&n,&K);
                      ^
./Main.cpp:30:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",a+i);
                    ^

Judge Result