oj.uz

답안 #927560

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
927560 2024-02-15T04:35:32 Z Cutebol 꿈 (IOI13_dreaming) C++17
0 / 100
 32 ms 12884 KB 
#include "dreaming.h"
#include <bits/stdc++.h>
using namespace std ;
#define pii pair <int , int>
#define ff first 
#define ss second

const int inf = 1e9 ;
const int N = 1e5 + 5 ;

template <class T>
bool chmax( T& x , const T& y ){
  bool f = 0 ;
  if ( x < y ) x = y , f = 1 ;
  return f ;
}
template <class T>
bool chmin( T &x , const T &y ){
  bool f = 0 ;
  if ( x > y ) x = y , f = 1 ;
  return f ;
}

bool vis[N] ;
int d[N] , f[N] , sc[N] ;
int mx , m , ind , r ;
pii ans[N] ;
vector <pii> g[N] ;
vector <pii> vec ;

void dfs ( int v , int s , int& m ){
	vis[v] = 1 ; d[v] = s ;
	if ( mx <= d[v] ){
		m = v ; mx = d[v] ;
	}
	for ( auto to : g[v] ) if ( !vis[to.ff] ) dfs(to.ff,s+to.ss,m) ;
}
void fir ( int v , int d , int& m ){
	vis[v] = 0 ; f[v] = d ;
	if ( chmax ( mx , f[v] ) ) m = v ;
	for ( auto to : g[v] ) if ( vis[to.ff] ) fir(to.ff,d+to.ss,m) ;
}
void sec ( int v , int d , int& m ){
	vis[v] = 1 ; sc[v] = d ;
	if ( max( f[v] , sc[v] ) < mx ){
		mx = max ( f[v] , sc[v] ) ; m = v ;
	}
	for ( auto to : g[v] ) if ( !vis[to.ff] ) sec(to.ff,d+to.ss,m) ;
}

int travelTime(int n, int m, int l, int a[], int b[], int c[]) {
    for ( int i = 0 ; i < m ; i ++ ){
		g[a[i]].push_back({b[i],c[i]}) ;
		g[b[i]].push_back({a[i],c[i]}) ;
	}
	for ( int i = 1 ; i <= n ; i ++ ){
		if ( !vis[i] ){
			mx = 0 ;
			dfs(i,0,m) ;
			mx = 0 ;
			fir(m,0,m) ;
			chmax ( r , f[m] ) ; 
			mx = inf ;
			sec(m,0,m) ;
			vec.push_back({max(f[m],sc[m]),m}) ;
		}
	} vec.push_back({0,0}) ; vec.push_back({0,0}) ;
	sort ( vec.rbegin() , vec.rend() ) ;
	return max( vec[0].ff + vec[1].ff + l , vec[1].ff + vec[2].ff + 2*l ) ;
}
/*
signed main(){
	int n , m , l , a[N] , b[N] , t[N] ;
	cin >> n >> m >> l ;
	for ( int i = 0 ; i < m ; i ++ ) cin >> a[i] >> b[i] >> t[i] ;
	cout << travelTime( n , m , l , a , b , t ) ;
}
*/

Subtask #1
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 32 ms 12884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 4444 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 32 ms 12884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 8436 KB Output is correct
2 Correct 17 ms 8408 KB Output is correct
3 Correct 17 ms 8416 KB Output is correct
4 Correct 17 ms 8408 KB Output is correct
5 Correct 17 ms 8408 KB Output is correct
6 Correct 18 ms 9180 KB Output is correct
7 Correct 18 ms 8632 KB Output is correct
8 Correct 17 ms 8416 KB Output is correct
9 Correct 17 ms 8300 KB Output is correct
10 Correct 20 ms 8540 KB Output is correct
11 Correct 1 ms 4596 KB Output is correct
12 Correct 16 ms 6868 KB Output is correct
13 Correct 13 ms 6868 KB Output is correct
14 Correct 14 ms 6868 KB Output is correct
15 Correct 13 ms 6868 KB Output is correct
16 Correct 14 ms 6868 KB Output is correct
17 Correct 15 ms 6612 KB Output is correct
18 Correct 11 ms 6868 KB Output is correct
19 Correct 14 ms 6868 KB Output is correct
20 Incorrect 1 ms 4444 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 4444 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 32 ms 12884 KB Output isn't correct
2 Halted 0 ms 0 KB -