Submission #625291

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
625291	2022-08-09 22:06:05	chonka	Network (BOI15_net)	C++17	100 / 100	632 ms	60268 KiB

net

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#include<bits/stdc++.h>
using namespace std ;
typedef long long ll ;
typedef unsigned long long ull ;
#define fi first
#define se second
// mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
const int MAXN = 5e5 + 7 ;
int n ;
vector < int > v[ MAXN ] , ord ;
int cnt[ MAXN ] , root , prv[ MAXN ] ;
int spec ;
void init ( int x , int lst ) {
    bool leaf = true ;
    cnt[ x ] = 0 ;
    for ( auto y : v[ x ] ) {
        if ( y == lst ) { continue ; }
        leaf = false ;
        prv[ y ] = x ;
        init ( y , x ) ;
        cnt[ x ] += cnt[ y ] ;
    }
    if ( leaf == true ) {
        ++ cnt[ x ] ;
    }    
}
 
 
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• Subtask 1: 18 / 18
• Subtask 2: 45 / 45
• Subtask 3: 37 / 37