| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1332946 | edo | 9월 (APIO24_september) | C++20 | 102 ms | 10688 KiB |
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#include "september.h"
const int nax = 1e5;
bool vis[nax + 10];
vector<int> g[nax];
int cnt;
void dfs(int u) {
if(vis[u]) return;
vis[u] = 1;
cnt++;
for(int v : g[u]) {
dfs(v);
}
}
int solve(int N, int M, vector<int> F, vector<vector<int>> S) {
for(int i = 0; i < N + 2; i++) {
vis[i] = 0;
g[i].clear();
}
for(int i = 1; i < N; i++) {
g[F[i]].push_back(i);
}
cnt = 0;
int ans = 0;
for(int i = 0; i < N - 1; i++) {
for(int j = 0; j < M; j++) {
dfs(S[j][i]);
}
if(!--cnt) ans+=1;
}
return ans;
}
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