Submission #1199254

#TimeUsernameProblemLanguageResultExecution timeMemory
1199254al_reem_2010September (APIO24_september)C++20
0 / 100
3 ms2880 KiB
// اَللَهُمَ صَلِ عَلَىَ مُحَمَدٍ وَ آلِ مُحَمَدٍ
#include "bits/stdc++.h"
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cmath>
#include <map>
#include <set>
#include <queue>
#include <thread>
#include <fstream>
using namespace std ;
//#define int long long
#define pb push_back
#define si size()
#define fi first
#define se second
#define all(a) a.begin(),a.end()
#define applejuice ios::sync_with_stdio(false) ; cin.tie(nullptr) ; cout.tie(nullptr) ;
//const int inf=1e18 ;
//const int mod=1e9+7 ;
int tt=1 ;
bool vis[100007] ;
vector<int> ch[100007] ;
void dfs(int k , int p)
{
    if(vis[k]) {return ;}
    vis[k]=1 ;
    for(int i=0 ; i<ch[k].si ; i++)
    {
        if(ch[k][i]==p) {continue ;}
        dfs(ch[k][i],k) ;
    }
}
int solve(int n , int m , vector<int> f , vector<vector<int>> s)
{
    int ans=0 ;
    vector<int> ch[n+7] ;
    for(int i=0 ; i<n ; i++) {ch[f[i]].pb(i) ; vis[i]=0 ;}
    for(int j=0 ; j<n ; j++)
    {
        if(vis[s[0][j]]) {continue ;}
        ans+=1 ;
        dfs(s[0][j],f[s[0][j]]) ;
    }
    for(int i=0 ; i<n ; i++) {ch[i].clear() ;}
    return ans ;
}
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