#include <bits/stdc++.h>
using namespace std;
vector<int> beechtree(int n, int m, vector<int>P, vector<int>C){
vector<vector<int>>graph(n,vector<int>());
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);
}
}
sort(sub.begin()+1,sub.end());
if(sub.size()==1){
ans[i]=1;
continue;
}
do{
bool bien=true;
map<int,int>repeticiones;
for(int j=1;j<sub.size();j++){
if(repeticiones.find(C[sub[j]])==repeticiones.end()){
repeticiones[C[sub[j]]]=0;
}
if(sub[repeticiones[C[sub[j]]]]!=P[sub[j]]){
bien=false;
break;
}
repeticiones[C[sub[j]]]++;
}
if(bien){
ans[i]=1;
break;
}
}while(next_permutation(sub.begin()+1,sub.end()));
}
return {ans};
}
int main(){
int N, M;
assert(2 == scanf("%d %d", &N, &M));
vector<int> P(N);
for (int i = 0; i < N; ++i)
assert(1 == scanf("%d", &P[i]));
vector<int> C(N);
for (int i = 0; i < N; ++i)
assert(1 == scanf("%d", &C[i]));
fclose(stdin);
vector<int> res = beechtree(N, M, P, C);
int n = res.size();
for (int i = 0; i < n; ++i)
{
if (i > 0)
printf(" ");
printf("%d", res[i]);
}
printf("\n");
fclose(stdout);
return 0;
}
Compilation message
beechtree.cpp: In function 'std::vector<int> beechtree(int, int, std::vector<int>, std::vector<int>)':
beechtree.cpp:29:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
29 | for(int j=1;j<sub.size();j++){
| ~^~~~~~~~~~~
/usr/bin/ld: /tmp/ccsuHcp6.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cccu7ZU7.o:beechtree.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status
