제출 #998269

#제출 시각아이디문제언어결과실행 시간메모리
998269ttamx9월 (APIO24_september)C++17
100 / 100
201 ms12324 KiB
#include"september.h" #include<bits/stdc++.h> using namespace std; using vi = vector<int>; int solve(int n,int m,vector<int> f,vector<vector<int>> s){ vector<vi> adj(n); vi vis(n); for(int i=1;i<n;i++)adj[f[i]].emplace_back(i); int cnt=0; function<void(int)> dfs=[&](int u){ if(vis[u])return; vis[u]=true,cnt++; for(auto v:adj[u])dfs(v); }; int ans=0; for(int i=0;i<n-1;i++){ for(int j=0;j<m;j++)dfs(s[j][i]); ans+=--cnt==0; } return ans; }
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