제출 #1031476

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1031476		aaaaaarroz	참나무 (IOI23_beechtree)	C++17	0 / 100	2070 ms	21208 KiB

beechtree

#include <bits/stdc++.h>
using namespace std;
vector<int> padre;
vector<int> cc;

bool menor_padre(int i, int j){
	return cc[i] < cc[j];
}
vector<int> beechtree(int n, int m, vector<int>P, vector<int>C){
	vector<vector<int>> graph(n,vector<int>());
	padre = P;
	cc=C;
	for(int i = 1; i < n; i++){
		graph[P[i]].push_back(i);
	}
	vector<int> ans(n, 0);
	for(int i = 0; i < n; i++){
		vector<int> sub;
		queue<int> cola;
		cola.push(i);
		while(!cola.empty()){
			int nodo = cola.front(); 
			cola.pop();
			sub.push_back(nodo);
			for(int vecino : graph[nodo]){
				cola.push(vecino);
			} 
		}
		if(sub.size() == 1){
			ans[i] = 1;  
			continue;
		}
		sort(sub.begin() + 1, sub.end(), menor_padre);  
		bool bien = true;
		map<int, int> repeticiones;
		for(int j = 1; j < sub.size(); j++){
			int color = C[sub[j]];
			if(repeticiones.find(color) == repeticiones.end()){
				repeticiones[color] = 0;
			}
			int expected_parent = sub[repeticiones[color]]; 
			if(P[sub[j]] != expected_parent){
				bien = false;
				break;
			}
			repeticiones[color]++;
		}
		if(bien){
			ans[i] = 1;
		}
	}
	return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

beechtree.cpp: In function 'std::vector<int> beechtree(int, int, std::vector<int>, std::vector<int>)':
beechtree.cpp:36:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |   for(int j = 1; j < sub.size(); j++){
      |                  ~~^~~~~~~~~~~~

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