oj.uz

답안 #927563

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
927563 2024-02-15T04:42:39 Z Cutebol 꿈 (IOI13_dreaming) C++17
18 / 100
 30 ms 12892 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}) ; vec.push_back({0,0}) ;
	if ( n == 1 ) return 0 ;
	if ( n == 2 ){
		if ( m == 1 ) return 0 ;
		return l ;
	}
	sort ( vec.rbegin() , vec.rend() ) ;
	return max({ r, 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 Correct 30 ms 12880 KB Output is correct
2 Correct 29 ms 12892 KB Output is correct
3 Correct 20 ms 10072 KB Output is correct
4 Correct 5 ms 5724 KB Output is correct
5 Correct 4 ms 5256 KB Output is correct
6 Correct 13 ms 6236 KB Output is correct
7 Incorrect 1 ms 4596 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Incorrect 1 ms 4444 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 12880 KB Output is correct
2 Correct 29 ms 12892 KB Output is correct
3 Correct 20 ms 10072 KB Output is correct
4 Correct 5 ms 5724 KB Output is correct
5 Correct 4 ms 5256 KB Output is correct
6 Correct 13 ms 6236 KB Output is correct
7 Incorrect 1 ms 4596 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 8416 KB Output is correct
2 Correct 17 ms 8412 KB Output is correct
3 Correct 18 ms 8416 KB Output is correct
4 Correct 17 ms 8412 KB Output is correct
5 Correct 17 ms 8408 KB Output is correct
6 Correct 19 ms 9176 KB Output is correct
7 Correct 18 ms 8668 KB Output is correct
8 Correct 17 ms 8568 KB Output is correct
9 Correct 17 ms 8292 KB Output is correct
10 Correct 18 ms 8408 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 16 ms 6868 KB Output is correct
13 Correct 14 ms 6868 KB Output is correct
14 Correct 17 ms 6868 KB Output is correct
15 Correct 14 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 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 10 ms 6868 KB Output is correct

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Incorrect 1 ms 4444 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 12880 KB Output is correct
2 Correct 29 ms 12892 KB Output is correct
3 Correct 20 ms 10072 KB Output is correct
4 Correct 5 ms 5724 KB Output is correct
5 Correct 4 ms 5256 KB Output is correct
6 Correct 13 ms 6236 KB Output is correct
7 Incorrect 1 ms 4596 KB Output isn't correct
8 Halted 0 ms 0 KB -