Submission #168316

#	Time	Username	Problem	Language	Result	Execution time	Memory
168316		aydinenes	Birokracija (COCI18_birokracija)	C++11	100 / 100	294 ms	48184 KiB

birokracija

#include<bits/stdc++.h>

#define mid(l,r) ((l+r)/2)

using namespace std;

const int N = 1e6 + 7;
const int inf = 1e9 + 7;

int n;

int a[N];

vector<int> g[N];

long long ans[N];

void dfsa(int node, int p){
	ans[node] = 1;
	
	for(int i = 0; i < g[node].size(); i++){
		int x = g[node][i];
		if(x == p)	continue;
		dfsa(x, node);
		ans[node] += ans[x];
	}
}

void dfsb(int node, int p){
	for(int i = 0; i < g[node].size(); i++){
		int x = g[node][i];
		if(x == p)	continue;
		dfsb(x, node);
		ans[node] += ans[x];
	}
}

int main(){
	
	cin >> n;
	
	for(int i = 2; i <= n; i++){
		cin >> a[i];
		g[i].push_back(a[i]);
		g[a[i]].push_back(i);
	}
	
	dfsa(1, 0);
	dfsb(1, 0);
	
	for(int i = 1; i <= n; i++){
		cout << ans[i] << " ";
	}
}

Compilation message (stderr)

birokracija.cpp: In function 'void dfsa(int, int)':
birokracija.cpp:21:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < g[node].size(); i++){
                 ~~^~~~~~~~~~~~~~~~
birokracija.cpp: In function 'void dfsb(int, int)':
birokracija.cpp:30:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < g[node].size(); i++){
                 ~~^~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10