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답안 #728455

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
728455 2023-04-22T12:34:09 Z Rasoul006 꿈 (IOI13_dreaming) C++17
24 / 100
 102 ms 37116 KB 
#include "dreaming.h"

#include <bits/stdc++.h>

#define endl "\n"

#define F first

#define S second

#define pb push_back

typedef long long ll;

using namespace std;

const int N = 1e6+5;

const long long oo = 1e18 ;

vector <pair <ll,ll>> v[N] ;

ll n , m , ans , best , mx , dis[N] ;

bool vis[N] ;

void dfs (ll u , ll p , ll cost)
{
    dis[u] = cost ;
    vis[u] = true ;
    for (auto it : v[u])
    {
        if (it.F != p)
            dfs(it.F , u , cost + it.S);
    }
}

bool dfs2 (ll u , ll p , ll cost , ll gol)
{
    bool is = false ;

    for (auto it : v[u])
    {
        if (it.F != p)
            is |= dfs2(it.F , u , cost + it.S , gol) ;
    }

    is |= (u == gol);
    
    if (is)
        best = min (best , max(cost , mx-cost));
        
    return is ;
}

ll p1 , p2 ;

ll get (ll p)
{
    mx = 0 ;
    for (int i = 1 ; i<=n ; i++)
        dis[i] = 0 ;

    dfs(p , p , 0) ;

    for (int i = 1 ; i<=n ; i++)
    {
        if (dis[i] >= mx)
            p1 = i , mx = dis[i] ;
        dis[i] = 0 ;
    }

    mx = 0 ;
    dfs(p1 , p1 , 0) ;
    for (int i = 1 ; i<=n ; i++)
    {
        if (dis[i] >= mx)
            p2 = i , mx = dis[i] ;
        dis[i] = 0 ;
    }
    
    best = oo ;
    dfs2(p1 , p1 , 0 , p2) ;
    return best ;
}


int travelTime(int N, int M, int L, int A[], int B[], int T[])
{
    n = N ; m = M ;

    for (int i = 0 ; i<m ; i++)
    {
        v[B[i]].pb({A[i] , T[i]});
        v[A[i]].pb({B[i] , T[i]});
    }

    ans += get(1) ;

    ll bans = mx ;

    for (int i = 1 ; i<=n ; i++)
    {
        if (!vis[i])
        {
            ans += get(i) ;
            break ;
        }
    }

    bans = max(bans , mx) ;

    return max(bans , ans + L) ;
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 66 ms 37116 KB Output is correct
2 Correct 57 ms 36932 KB Output is correct
3 Correct 40 ms 32492 KB Output is correct
4 Correct 20 ms 25760 KB Output is correct
5 Correct 21 ms 24916 KB Output is correct
6 Correct 29 ms 26892 KB Output is correct
7 Correct 13 ms 23820 KB Output is correct
8 Correct 44 ms 28620 KB Output is correct
9 Correct 39 ms 30480 KB Output is correct
10 Correct 13 ms 23844 KB Output is correct
11 Correct 64 ms 32480 KB Output is correct
12 Correct 66 ms 34896 KB Output is correct
13 Correct 12 ms 23892 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23820 KB Output is correct
2 Correct 13 ms 23728 KB Output is correct
3 Correct 16 ms 23764 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 13 ms 23752 KB Output is correct
6 Correct 12 ms 23764 KB Output is correct
7 Correct 12 ms 23764 KB Output is correct
8 Correct 12 ms 23764 KB Output is correct
9 Correct 13 ms 23808 KB Output is correct
10 Correct 12 ms 23764 KB Output is correct
11 Correct 12 ms 23884 KB Output is correct
12 Correct 13 ms 23764 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 12 ms 23816 KB Output is correct
15 Correct 13 ms 23764 KB Output is correct
16 Correct 13 ms 23764 KB Output is correct
17 Correct 13 ms 23728 KB Output is correct
18 Correct 12 ms 23744 KB Output is correct
19 Correct 16 ms 23772 KB Output is correct
20 Correct 13 ms 23764 KB Output is correct
21 Correct 14 ms 23764 KB Output is correct
22 Correct 13 ms 23764 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 12 ms 23764 KB Output is correct
25 Correct 15 ms 23700 KB Output is correct

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 66 ms 37116 KB Output is correct
2 Correct 57 ms 36932 KB Output is correct
3 Correct 40 ms 32492 KB Output is correct
4 Correct 20 ms 25760 KB Output is correct
5 Correct 21 ms 24916 KB Output is correct
6 Correct 29 ms 26892 KB Output is correct
7 Correct 13 ms 23820 KB Output is correct
8 Correct 44 ms 28620 KB Output is correct
9 Correct 39 ms 30480 KB Output is correct
10 Correct 13 ms 23844 KB Output is correct
11 Correct 64 ms 32480 KB Output is correct
12 Correct 66 ms 34896 KB Output is correct
13 Correct 12 ms 23892 KB Output is correct
14 Correct 15 ms 23820 KB Output is correct
15 Correct 13 ms 23728 KB Output is correct
16 Correct 16 ms 23764 KB Output is correct
17 Correct 12 ms 23764 KB Output is correct
18 Correct 13 ms 23752 KB Output is correct
19 Correct 12 ms 23764 KB Output is correct
20 Correct 12 ms 23764 KB Output is correct
21 Correct 12 ms 23764 KB Output is correct
22 Correct 13 ms 23808 KB Output is correct
23 Correct 12 ms 23764 KB Output is correct
24 Correct 12 ms 23884 KB Output is correct
25 Correct 13 ms 23764 KB Output is correct
26 Correct 13 ms 23764 KB Output is correct
27 Correct 12 ms 23816 KB Output is correct
28 Correct 13 ms 23764 KB Output is correct
29 Correct 13 ms 23764 KB Output is correct
30 Correct 13 ms 23728 KB Output is correct
31 Correct 12 ms 23744 KB Output is correct
32 Correct 16 ms 23772 KB Output is correct
33 Correct 13 ms 23764 KB Output is correct
34 Correct 14 ms 23764 KB Output is correct
35 Correct 13 ms 23764 KB Output is correct
36 Correct 13 ms 23764 KB Output is correct
37 Correct 12 ms 23764 KB Output is correct
38 Correct 15 ms 23700 KB Output is correct
39 Correct 60 ms 36996 KB Output is correct
40 Correct 53 ms 36944 KB Output is correct
41 Correct 39 ms 32468 KB Output is correct
42 Correct 17 ms 25684 KB Output is correct
43 Correct 13 ms 23736 KB Output is correct
44 Correct 16 ms 23732 KB Output is correct
45 Correct 15 ms 23712 KB Output is correct
46 Correct 13 ms 23764 KB Output is correct
47 Correct 14 ms 23764 KB Output is correct
48 Correct 13 ms 23812 KB Output is correct
49 Correct 13 ms 23784 KB Output is correct
50 Correct 13 ms 23816 KB Output is correct
51 Correct 13 ms 23764 KB Output is correct
52 Correct 14 ms 23820 KB Output is correct
53 Correct 13 ms 23708 KB Output is correct
54 Correct 12 ms 23764 KB Output is correct
55 Correct 15 ms 23732 KB Output is correct
56 Correct 12 ms 23764 KB Output is correct
57 Correct 87 ms 31636 KB Output is correct
58 Correct 74 ms 31716 KB Output is correct
59 Correct 96 ms 31428 KB Output is correct
60 Correct 102 ms 31436 KB Output is correct
61 Correct 73 ms 31200 KB Output is correct
62 Correct 73 ms 31152 KB Output is correct
63 Incorrect 73 ms 30996 KB Output isn't correct
64 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 33 ms 26964 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23820 KB Output is correct
2 Correct 13 ms 23728 KB Output is correct
3 Correct 16 ms 23764 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 13 ms 23752 KB Output is correct
6 Correct 12 ms 23764 KB Output is correct
7 Correct 12 ms 23764 KB Output is correct
8 Correct 12 ms 23764 KB Output is correct
9 Correct 13 ms 23808 KB Output is correct
10 Correct 12 ms 23764 KB Output is correct
11 Correct 12 ms 23884 KB Output is correct
12 Correct 13 ms 23764 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 12 ms 23816 KB Output is correct
15 Correct 13 ms 23764 KB Output is correct
16 Correct 13 ms 23764 KB Output is correct
17 Correct 13 ms 23728 KB Output is correct
18 Correct 12 ms 23744 KB Output is correct
19 Correct 16 ms 23772 KB Output is correct
20 Correct 13 ms 23764 KB Output is correct
21 Correct 14 ms 23764 KB Output is correct
22 Correct 13 ms 23764 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 12 ms 23764 KB Output is correct
25 Correct 15 ms 23700 KB Output is correct
26 Correct 17 ms 23764 KB Output is correct
27 Incorrect 14 ms 23892 KB Output isn't correct
28 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 66 ms 37116 KB Output is correct
2 Correct 57 ms 36932 KB Output is correct
3 Correct 40 ms 32492 KB Output is correct
4 Correct 20 ms 25760 KB Output is correct
5 Correct 21 ms 24916 KB Output is correct
6 Correct 29 ms 26892 KB Output is correct
7 Correct 13 ms 23820 KB Output is correct
8 Correct 44 ms 28620 KB Output is correct
9 Correct 39 ms 30480 KB Output is correct
10 Correct 13 ms 23844 KB Output is correct
11 Correct 64 ms 32480 KB Output is correct
12 Correct 66 ms 34896 KB Output is correct
13 Correct 12 ms 23892 KB Output is correct
14 Correct 15 ms 23820 KB Output is correct
15 Correct 13 ms 23728 KB Output is correct
16 Correct 16 ms 23764 KB Output is correct
17 Correct 12 ms 23764 KB Output is correct
18 Correct 13 ms 23752 KB Output is correct
19 Correct 12 ms 23764 KB Output is correct
20 Correct 12 ms 23764 KB Output is correct
21 Correct 12 ms 23764 KB Output is correct
22 Correct 13 ms 23808 KB Output is correct
23 Correct 12 ms 23764 KB Output is correct
24 Correct 12 ms 23884 KB Output is correct
25 Correct 13 ms 23764 KB Output is correct
26 Correct 13 ms 23764 KB Output is correct
27 Correct 12 ms 23816 KB Output is correct
28 Correct 13 ms 23764 KB Output is correct
29 Correct 13 ms 23764 KB Output is correct
30 Correct 13 ms 23728 KB Output is correct
31 Correct 12 ms 23744 KB Output is correct
32 Correct 16 ms 23772 KB Output is correct
33 Correct 13 ms 23764 KB Output is correct
34 Correct 14 ms 23764 KB Output is correct
35 Correct 13 ms 23764 KB Output is correct
36 Correct 13 ms 23764 KB Output is correct
37 Correct 12 ms 23764 KB Output is correct
38 Correct 15 ms 23700 KB Output is correct
39 Correct 60 ms 36996 KB Output is correct
40 Correct 53 ms 36944 KB Output is correct
41 Correct 39 ms 32468 KB Output is correct
42 Correct 17 ms 25684 KB Output is correct
43 Correct 13 ms 23736 KB Output is correct
44 Correct 16 ms 23732 KB Output is correct
45 Correct 15 ms 23712 KB Output is correct
46 Correct 13 ms 23764 KB Output is correct
47 Correct 14 ms 23764 KB Output is correct
48 Correct 13 ms 23812 KB Output is correct
49 Correct 13 ms 23784 KB Output is correct
50 Correct 13 ms 23816 KB Output is correct
51 Correct 13 ms 23764 KB Output is correct
52 Correct 14 ms 23820 KB Output is correct
53 Correct 13 ms 23708 KB Output is correct
54 Correct 12 ms 23764 KB Output is correct
55 Correct 15 ms 23732 KB Output is correct
56 Correct 12 ms 23764 KB Output is correct
57 Correct 87 ms 31636 KB Output is correct
58 Correct 74 ms 31716 KB Output is correct
59 Correct 96 ms 31428 KB Output is correct
60 Correct 102 ms 31436 KB Output is correct
61 Correct 73 ms 31200 KB Output is correct
62 Correct 73 ms 31152 KB Output is correct
63 Incorrect 73 ms 30996 KB Output isn't correct
64 Halted 0 ms 0 KB -