제출 #1083491

#제출 시각아이디문제언어결과실행 시간메모리
1083491SamueleVidBeech Tree (IOI23_beechtree)C++17
0 / 100
8 ms9848 KiB
#include <bits/stdc++.h>
using namespace std;

constexpr int MAXN = 2e5 + 5;
constexpr int MAXM = 2e5 + 5;

int depth[MAXN];
vector<int> adj[MAXN];
vector<int> P;
vector<int> C;
set<int> colori_prof[3];
int numero[3];

void dfs(int u) {
    colori_prof[depth[u]].insert(C[u]);
    numero[depth[u]] ++;

    for (auto x : adj[u]) {
        if (x == P[u]) continue;
        depth[x] = depth[u] + 1;
        dfs(x);
    }
}

vector<int> beechtree(int N, int M, vector<int> P, vector<int> C) {
    :: P = P;
    :: C = C;

    for (int i = 1; i < N; i ++) {
        adj[P[i]].push_back(i);
        adj[i].push_back(P[i]);
    }

    dfs(0);

    vector<int> res(N, 1);

    if (colori_prof[2].size() == 1 && colori_prof[1].size() == numero[1]) {
        res[0] = 1;
    }
    else {
        res[0] = 0;
    }
 
    return res;
}

컴파일 시 표준 에러 (stderr) 메시지

beechtree.cpp: In function 'std::vector<int> beechtree(int, int, std::vector<int>, std::vector<int>)':
beechtree.cpp:38:61: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   38 |     if (colori_prof[2].size() == 1 && colori_prof[1].size() == numero[1]) {
      |                                       ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
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