Submission #1604110

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Source Code Expand

#include <stdio.h>
#include <string.h>
#include <string>
#include <algorithm>
#include <map>
#include <set>
#include <vector>
#include <iostream>
using namespace std;

vector <vector <int> > v;

int sol (int ind) {
	int d = v[ind].size();

	for (int i=0;i<v[ind].size();i++) {
		d = max(d, sol(v[ind][i])+1);
	}

	return d;
}

int main () {
	int n, a;
	scanf ("%d", &n);
	v.resize(n);

	for (int i=1;i<n;i++) {
		scanf ("%d", &a);
		a --;
		v[a].push_back(i);
	}

	printf ("%d\n", sol(0));

	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:25:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d", &n);
                  ^
./Main.cpp:29:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf ("%d", &a);
                   ^

Judge Result