제출 #1008677

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1008677		aaaaaarroz	참나무 (IOI23_beechtree)	C++17	0 / 100	2095 ms	348 KiB

beechtree

#include "beechtree.h"
#include <bits/stdc++.h>
using namespace std;
vector<int>padre;
vector<vector<int>>graph;
vector<int>sub;
void dfs(int nodo){
	sub.push_back(nodo);
	for(int vecino:graph[nodo]){
		if(vecino!=padre[nodo]){
			dfs(vecino);
		}
	}
}
vector<int> beechtree(int n, int m, vector<int>P, vector<int>C){
	padre=P;
	graph.resize(n,vector<int>());
	for(int i=0;i<n;i++){
		if(P[i]!=-1){
			graph[i].push_back(P[i]);
			graph[P[i]].push_back(i);
		}
	}
	vector<int>ans;
	for(int i=0;i<n;i++){
		sub.clear();
		dfs(i);
		bool posible=false;
		while(next_permutation(next(sub.begin()),sub.end())){
			bool bien=true;
			map<int,int>repeticiones;
			for(int i=1;i<sub.size();i++){
				if(repeticiones[C[sub[i]]]!=P[sub[i]]){
					bien=false;
					break;
				}
				repeticiones[C[sub[i]]]++;
			}
			posible|=bien;
		}
		ans.push_back(posible);
	}
	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:32:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |    for(int i=1;i<sub.size();i++){
      |                ~^~~~~~~~~~~

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