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답안 #728459

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
728459 2023-04-22T12:42:55 Z Rasoul006 꿈 (IOI13_dreaming) C++17
24 / 100
 99 ms 37092 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] , len ;

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 , len-cost));

    return is ;
}

ll p1 , p2 ;

ll far (ll p)
{
    mx = 0 ; ll ret ;

    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)
            ret = i , mx = dis[i] ;
    }

    return ret ;
}

ll get (ll p)
{
    p1 = far(p);
    p2 = far(p1);
    len = mx ;

    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 = len ;

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

    bans = max(bans , len) ;

    return max(bans , ans + L) ;
}

Compilation message

dreaming.cpp: In function 'll far(ll)':
dreaming.cpp:74:12: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   74 |     return ret ;
      |            ^~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 37092 KB Output is correct
2 Correct 57 ms 37052 KB Output is correct
3 Correct 47 ms 32408 KB Output is correct
4 Correct 19 ms 25652 KB Output is correct
5 Correct 18 ms 24996 KB Output is correct
6 Correct 24 ms 26836 KB Output is correct
7 Correct 13 ms 23856 KB Output is correct
8 Correct 36 ms 28600 KB Output is correct
9 Correct 42 ms 30540 KB Output is correct
10 Correct 13 ms 23900 KB Output is correct
11 Correct 60 ms 32536 KB Output is correct
12 Correct 69 ms 35000 KB Output is correct
13 Correct 13 ms 23892 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 12 ms 23764 KB Output is correct
4 Correct 13 ms 23764 KB Output is correct
5 Correct 17 ms 23764 KB Output is correct
6 Correct 14 ms 23708 KB Output is correct
7 Correct 15 ms 23892 KB Output is correct
8 Correct 13 ms 23764 KB Output is correct
9 Correct 15 ms 23764 KB Output is correct
10 Correct 12 ms 23792 KB Output is correct
11 Correct 12 ms 23796 KB Output is correct
12 Correct 13 ms 23764 KB Output is correct
13 Correct 12 ms 23764 KB Output is correct
14 Correct 13 ms 23816 KB Output is correct
15 Correct 12 ms 23716 KB Output is correct
16 Correct 13 ms 23776 KB Output is correct
17 Correct 14 ms 23764 KB Output is correct
18 Correct 13 ms 23764 KB Output is correct
19 Correct 13 ms 23764 KB Output is correct
20 Correct 13 ms 23816 KB Output is correct
21 Correct 12 ms 23804 KB Output is correct
22 Correct 12 ms 23732 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 15 ms 23764 KB Output is correct
25 Correct 13 ms 23856 KB Output is correct

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 37092 KB Output is correct
2 Correct 57 ms 37052 KB Output is correct
3 Correct 47 ms 32408 KB Output is correct
4 Correct 19 ms 25652 KB Output is correct
5 Correct 18 ms 24996 KB Output is correct
6 Correct 24 ms 26836 KB Output is correct
7 Correct 13 ms 23856 KB Output is correct
8 Correct 36 ms 28600 KB Output is correct
9 Correct 42 ms 30540 KB Output is correct
10 Correct 13 ms 23900 KB Output is correct
11 Correct 60 ms 32536 KB Output is correct
12 Correct 69 ms 35000 KB Output is correct
13 Correct 13 ms 23892 KB Output is correct
14 Correct 13 ms 23764 KB Output is correct
15 Correct 13 ms 23764 KB Output is correct
16 Correct 12 ms 23764 KB Output is correct
17 Correct 13 ms 23764 KB Output is correct
18 Correct 17 ms 23764 KB Output is correct
19 Correct 14 ms 23708 KB Output is correct
20 Correct 15 ms 23892 KB Output is correct
21 Correct 13 ms 23764 KB Output is correct
22 Correct 15 ms 23764 KB Output is correct
23 Correct 12 ms 23792 KB Output is correct
24 Correct 12 ms 23796 KB Output is correct
25 Correct 13 ms 23764 KB Output is correct
26 Correct 12 ms 23764 KB Output is correct
27 Correct 13 ms 23816 KB Output is correct
28 Correct 12 ms 23716 KB Output is correct
29 Correct 13 ms 23776 KB Output is correct
30 Correct 14 ms 23764 KB Output is correct
31 Correct 13 ms 23764 KB Output is correct
32 Correct 13 ms 23764 KB Output is correct
33 Correct 13 ms 23816 KB Output is correct
34 Correct 12 ms 23804 KB Output is correct
35 Correct 12 ms 23732 KB Output is correct
36 Correct 13 ms 23764 KB Output is correct
37 Correct 15 ms 23764 KB Output is correct
38 Correct 13 ms 23856 KB Output is correct
39 Correct 60 ms 37076 KB Output is correct
40 Correct 64 ms 37008 KB Output is correct
41 Correct 39 ms 32500 KB Output is correct
42 Correct 23 ms 25664 KB Output is correct
43 Correct 15 ms 23892 KB Output is correct
44 Correct 13 ms 23800 KB Output is correct
45 Correct 13 ms 23816 KB Output is correct
46 Correct 13 ms 23728 KB Output is correct
47 Correct 12 ms 23708 KB Output is correct
48 Correct 13 ms 23784 KB Output is correct
49 Correct 12 ms 23768 KB Output is correct
50 Correct 12 ms 23708 KB Output is correct
51 Correct 12 ms 23776 KB Output is correct
52 Correct 13 ms 23720 KB Output is correct
53 Correct 14 ms 23820 KB Output is correct
54 Correct 13 ms 23764 KB Output is correct
55 Correct 13 ms 23764 KB Output is correct
56 Correct 12 ms 23764 KB Output is correct
57 Correct 92 ms 31644 KB Output is correct
58 Correct 85 ms 31700 KB Output is correct
59 Correct 76 ms 31408 KB Output is correct
60 Correct 99 ms 31536 KB Output is correct
61 Correct 73 ms 31228 KB Output is correct
62 Correct 77 ms 31180 KB Output is correct
63 Incorrect 69 ms 30932 KB Output isn't correct
64 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 25 ms 26808 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 12 ms 23764 KB Output is correct
4 Correct 13 ms 23764 KB Output is correct
5 Correct 17 ms 23764 KB Output is correct
6 Correct 14 ms 23708 KB Output is correct
7 Correct 15 ms 23892 KB Output is correct
8 Correct 13 ms 23764 KB Output is correct
9 Correct 15 ms 23764 KB Output is correct
10 Correct 12 ms 23792 KB Output is correct
11 Correct 12 ms 23796 KB Output is correct
12 Correct 13 ms 23764 KB Output is correct
13 Correct 12 ms 23764 KB Output is correct
14 Correct 13 ms 23816 KB Output is correct
15 Correct 12 ms 23716 KB Output is correct
16 Correct 13 ms 23776 KB Output is correct
17 Correct 14 ms 23764 KB Output is correct
18 Correct 13 ms 23764 KB Output is correct
19 Correct 13 ms 23764 KB Output is correct
20 Correct 13 ms 23816 KB Output is correct
21 Correct 12 ms 23804 KB Output is correct
22 Correct 12 ms 23732 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 15 ms 23764 KB Output is correct
25 Correct 13 ms 23856 KB Output is correct
26 Correct 15 ms 23880 KB Output is correct
27 Incorrect 13 ms 23868 KB Output isn't correct
28 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 37092 KB Output is correct
2 Correct 57 ms 37052 KB Output is correct
3 Correct 47 ms 32408 KB Output is correct
4 Correct 19 ms 25652 KB Output is correct
5 Correct 18 ms 24996 KB Output is correct
6 Correct 24 ms 26836 KB Output is correct
7 Correct 13 ms 23856 KB Output is correct
8 Correct 36 ms 28600 KB Output is correct
9 Correct 42 ms 30540 KB Output is correct
10 Correct 13 ms 23900 KB Output is correct
11 Correct 60 ms 32536 KB Output is correct
12 Correct 69 ms 35000 KB Output is correct
13 Correct 13 ms 23892 KB Output is correct
14 Correct 13 ms 23764 KB Output is correct
15 Correct 13 ms 23764 KB Output is correct
16 Correct 12 ms 23764 KB Output is correct
17 Correct 13 ms 23764 KB Output is correct
18 Correct 17 ms 23764 KB Output is correct
19 Correct 14 ms 23708 KB Output is correct
20 Correct 15 ms 23892 KB Output is correct
21 Correct 13 ms 23764 KB Output is correct
22 Correct 15 ms 23764 KB Output is correct
23 Correct 12 ms 23792 KB Output is correct
24 Correct 12 ms 23796 KB Output is correct
25 Correct 13 ms 23764 KB Output is correct
26 Correct 12 ms 23764 KB Output is correct
27 Correct 13 ms 23816 KB Output is correct
28 Correct 12 ms 23716 KB Output is correct
29 Correct 13 ms 23776 KB Output is correct
30 Correct 14 ms 23764 KB Output is correct
31 Correct 13 ms 23764 KB Output is correct
32 Correct 13 ms 23764 KB Output is correct
33 Correct 13 ms 23816 KB Output is correct
34 Correct 12 ms 23804 KB Output is correct
35 Correct 12 ms 23732 KB Output is correct
36 Correct 13 ms 23764 KB Output is correct
37 Correct 15 ms 23764 KB Output is correct
38 Correct 13 ms 23856 KB Output is correct
39 Correct 60 ms 37076 KB Output is correct
40 Correct 64 ms 37008 KB Output is correct
41 Correct 39 ms 32500 KB Output is correct
42 Correct 23 ms 25664 KB Output is correct
43 Correct 15 ms 23892 KB Output is correct
44 Correct 13 ms 23800 KB Output is correct
45 Correct 13 ms 23816 KB Output is correct
46 Correct 13 ms 23728 KB Output is correct
47 Correct 12 ms 23708 KB Output is correct
48 Correct 13 ms 23784 KB Output is correct
49 Correct 12 ms 23768 KB Output is correct
50 Correct 12 ms 23708 KB Output is correct
51 Correct 12 ms 23776 KB Output is correct
52 Correct 13 ms 23720 KB Output is correct
53 Correct 14 ms 23820 KB Output is correct
54 Correct 13 ms 23764 KB Output is correct
55 Correct 13 ms 23764 KB Output is correct
56 Correct 12 ms 23764 KB Output is correct
57 Correct 92 ms 31644 KB Output is correct
58 Correct 85 ms 31700 KB Output is correct
59 Correct 76 ms 31408 KB Output is correct
60 Correct 99 ms 31536 KB Output is correct
61 Correct 73 ms 31228 KB Output is correct
62 Correct 77 ms 31180 KB Output is correct
63 Incorrect 69 ms 30932 KB Output isn't correct
64 Halted 0 ms 0 KB -