#include <bits/stdc++.h>
using namespace std;
vector<int> padre;
bool menor_padre(int i, int j){
return padre[i] < padre[j];
}
vector<int> beechtree(int n, int m, vector<int>P, vector<int>C){
vector<vector<int>> graph(n);
padre = P;
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;
}
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:33:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
33 | for(int j = 1; j < sub.size(); j++){
| ~~^~~~~~~~~~~~
/usr/bin/ld: /tmp/ccKRlwTQ.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cckYJgIR.o:beechtree.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status
