| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1173044 | ladnooo | 9월 (APIO24_september) | C++20 | 1095 ms | 2632 KiB |
#include <bits/stdc++.h>
using namespace std;
const int maxN = 1e5 + 7;
vector<int> g[maxN];
int par[maxN];
void dfs(int v) {
par[v] = -1;
for(int u : g[v]) {
dfs(u);
}
}
int solve(int N, int M, vector<int> F, vector<vector<int>> S) {
int szz = F.size();
for(int i = 1; i < szz; i++) {
par[F[i]]++;
g[F[i]].push_back(i);
}
vector<int> m = S[0];
int sz = m.size();
int sum = 0;
for(int i = 0; i < sz; i++) {
if(par[m[i]] == 0) {
par[F[m[i]]]--;
sum++;
} else if(par[m[i]] > 0) {
dfs(m[i]);
sum++;
}
}
return sum;;
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