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답안 #356297

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
356297 2021-01-23T09:11:59 Z sean617 꿈 (IOI13_dreaming) C++
24 / 100
 157 ms 17908 KB 
#include "dreaming.h"
#include <iostream>
#include <cstdio>
#include <vector>
#define SZ 100005
using namespace std;

int MM = 2e9;
int n, m, mx, po, cnt, mn, md, ans, m1, m2, m3, v[SZ];
vector<int> a[SZ], b[SZ], c;
void f(int p, int q, int w) {
    int i, t;
    if (w > mx) {
        mx = w;
        po = p;
    }
    v[p] = cnt;
    for (i = 0; i < a[p].size(); i++) {
        t = a[p][i];
        if (t == q) continue;
        f(t, p, w + b[p][i]);
    }
}

int g(int p, int q, int w) {
    int i, t, t2;
    if (p == c[1]) return 1;
    for (i = 0; i < a[p].size(); i++) {
        t = a[p][i];
        if (t == q) continue;
        if (g(t, p, w + b[p][i])) {
            t2 = max(w, mx - w);
            mn = min(mn, t2);
            return 1;
        }
    }
    return 0;
}


int travelTime(int N, int M, int L, int A[], int B[], int T[]) {
    int i, j, t1, t2, t3;
    n = N;
    m = M;
    for (i = 0; i < m; i++) {
//        scanf ("%d %d %d", &t1, &t2, &t3);
        t1 = A[i];
        t2 = B[i];
        t3 = T[i];
        a[t1].push_back(t2);
        a[t2].push_back(t1);
        b[t1].push_back(t3);
        b[t2].push_back(t3);
    }
    for (i = 0; i < n; i++) {
        if (v[i]) continue;
        cnt++;
        mx = -1;
        c.clear();
        f(i, 0, 0);
        c.push_back(po);
        mx = -1;
        f(po, 0, 0);
        ans = max(ans, mx);
        c.push_back(po);
        if (mx == 0) {
            continue;
        }
        mn = MM;
        g(c[0], 0, 0);
        if (mn > m1) {
            m3 = m2;
            m2 = m1;
            m1 = mn;
        } else if (mn > m2) {
            m3 = m2;
            m2 = mn;
        } else if (mn > m3) {
            m3 = mn;
        }
//        printf("%d %d\n", c[0], c[1]);
    }
    if (m == n - 1) {
        cout << ans;
        return 0;
    }
    ans = max(ans, m1 + m2 + L);
    if (cnt >= 3) ans = max(ans, m2 + m3 + L * 2);
    return ans;
}

Compilation message

dreaming.cpp: In function 'void f(int, int, int)':
dreaming.cpp:18:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for (i = 0; i < a[p].size(); i++) {
      |                 ~~^~~~~~~~~~~~~
dreaming.cpp: In function 'int g(int, int, int)':
dreaming.cpp:28:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for (i = 0; i < a[p].size(); i++) {
      |                 ~~^~~~~~~~~~~~~
dreaming.cpp: In function 'int travelTime(int, int, int, int*, int*, int*)':
dreaming.cpp:42:12: warning: unused variable 'j' [-Wunused-variable]
   42 |     int i, j, t1, t2, t3;
      |            ^

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 88 ms 17908 KB Output is correct
2 Correct 112 ms 17900 KB Output is correct
3 Correct 55 ms 13568 KB Output is correct
4 Correct 12 ms 6892 KB Output is correct
5 Correct 13 ms 6124 KB Output is correct
6 Correct 22 ms 7788 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 45 ms 9708 KB Output is correct
9 Correct 56 ms 11500 KB Output is correct
10 Correct 5 ms 5100 KB Output is correct
11 Correct 118 ms 13420 KB Output is correct
12 Correct 130 ms 15772 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 4 ms 5100 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 3 ms 5100 KB Output is correct
6 Correct 3 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 5100 KB Output is correct
10 Correct 4 ms 5100 KB Output is correct
11 Correct 3 ms 5100 KB Output is correct
12 Correct 6 ms 5116 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 5 ms 5100 KB Output is correct
15 Correct 4 ms 4972 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 3 ms 5100 KB Output is correct
18 Correct 3 ms 4972 KB Output is correct
19 Correct 4 ms 5100 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct
22 Correct 4 ms 5228 KB Output is correct
23 Correct 3 ms 4972 KB Output is correct
24 Correct 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 88 ms 17908 KB Output is correct
2 Correct 112 ms 17900 KB Output is correct
3 Correct 55 ms 13568 KB Output is correct
4 Correct 12 ms 6892 KB Output is correct
5 Correct 13 ms 6124 KB Output is correct
6 Correct 22 ms 7788 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 45 ms 9708 KB Output is correct
9 Correct 56 ms 11500 KB Output is correct
10 Correct 5 ms 5100 KB Output is correct
11 Correct 118 ms 13420 KB Output is correct
12 Correct 130 ms 15772 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 3 ms 5100 KB Output is correct
15 Correct 4 ms 5100 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 3 ms 5100 KB Output is correct
19 Correct 3 ms 5100 KB Output is correct
20 Correct 4 ms 5100 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 ms 5100 KB Output is correct
24 Correct 3 ms 5100 KB Output is correct
25 Correct 6 ms 5116 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 5 ms 5100 KB Output is correct
28 Correct 4 ms 4972 KB Output is correct
29 Correct 4 ms 5100 KB Output is correct
30 Correct 3 ms 5100 KB Output is correct
31 Correct 3 ms 4972 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 4 ms 4972 KB Output is correct
34 Correct 4 ms 5100 KB Output is correct
35 Correct 4 ms 5228 KB Output is correct
36 Correct 3 ms 4972 KB Output is correct
37 Correct 4 ms 5100 KB Output is correct
38 Correct 4 ms 5100 KB Output is correct
39 Correct 95 ms 17900 KB Output is correct
40 Correct 92 ms 17900 KB Output is correct
41 Correct 54 ms 13420 KB Output is correct
42 Correct 12 ms 6892 KB Output is correct
43 Correct 4 ms 5100 KB Output is correct
44 Correct 4 ms 5100 KB Output is correct
45 Correct 3 ms 5100 KB Output is correct
46 Correct 4 ms 5100 KB Output is correct
47 Correct 4 ms 5100 KB Output is correct
48 Correct 4 ms 5100 KB Output is correct
49 Correct 4 ms 5100 KB Output is correct
50 Correct 4 ms 5100 KB Output is correct
51 Correct 3 ms 5100 KB Output is correct
52 Correct 3 ms 5100 KB Output is correct
53 Correct 4 ms 5100 KB Output is correct
54 Correct 4 ms 5100 KB Output is correct
55 Correct 5 ms 5100 KB Output is correct
56 Correct 4 ms 5100 KB Output is correct
57 Correct 157 ms 12832 KB Output is correct
58 Correct 144 ms 12780 KB Output is correct
59 Correct 132 ms 13036 KB Output is correct
60 Correct 149 ms 13036 KB Output is correct
61 Correct 140 ms 13292 KB Output is correct
62 Correct 148 ms 13164 KB Output is correct
63 Correct 120 ms 13036 KB Output is correct
64 Incorrect 108 ms 13036 KB Output isn't correct
65 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 42 ms 9856 KB Output is correct
2 Correct 43 ms 9964 KB Output is correct
3 Correct 40 ms 9708 KB Output is correct
4 Correct 38 ms 9856 KB Output is correct
5 Correct 36 ms 9708 KB Output is correct
6 Correct 39 ms 9964 KB Output is correct
7 Correct 36 ms 9836 KB Output is correct
8 Correct 49 ms 9580 KB Output is correct
9 Correct 38 ms 9580 KB Output is correct
10 Correct 38 ms 9836 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 6 ms 5484 KB Output is correct
13 Correct 6 ms 5484 KB Output is correct
14 Correct 6 ms 5484 KB Output is correct
15 Correct 6 ms 5484 KB Output is correct
16 Correct 6 ms 5484 KB Output is correct
17 Correct 6 ms 5356 KB Output is correct
18 Correct 8 ms 5484 KB Output is correct
19 Correct 6 ms 5484 KB Output is correct
20 Incorrect 4 ms 4972 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 4 ms 5100 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 3 ms 5100 KB Output is correct
6 Correct 3 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 5100 KB Output is correct
10 Correct 4 ms 5100 KB Output is correct
11 Correct 3 ms 5100 KB Output is correct
12 Correct 6 ms 5116 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 5 ms 5100 KB Output is correct
15 Correct 4 ms 4972 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 3 ms 5100 KB Output is correct
18 Correct 3 ms 4972 KB Output is correct
19 Correct 4 ms 5100 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct
22 Correct 4 ms 5228 KB Output is correct
23 Correct 3 ms 4972 KB Output is correct
24 Correct 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 6 ms 5228 KB Output is correct
28 Correct 6 ms 5228 KB Output is correct
29 Correct 4 ms 5100 KB Output is correct
30 Correct 5 ms 5228 KB Output is correct
31 Correct 6 ms 5228 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 8 ms 5228 KB Output is correct
34 Correct 5 ms 5228 KB Output is correct
35 Correct 3 ms 4972 KB Output is correct
36 Correct 3 ms 5100 KB Output is correct
37 Correct 4 ms 5100 KB Output is correct
38 Correct 4 ms 5100 KB Output is correct
39 Correct 4 ms 5100 KB Output is correct
40 Correct 4 ms 4972 KB Output is correct
41 Correct 3 ms 4972 KB Output is correct
42 Correct 4 ms 5100 KB Output is correct
43 Correct 4 ms 5100 KB Output is correct
44 Correct 4 ms 5100 KB Output is correct
45 Correct 3 ms 5100 KB Output is correct
46 Correct 4 ms 5100 KB Output is correct
47 Correct 4 ms 5100 KB Output is correct
48 Correct 3 ms 5100 KB Output is correct
49 Correct 4 ms 5100 KB Output is correct
50 Correct 3 ms 5100 KB Output is correct
51 Correct 3 ms 5100 KB Output is correct
52 Incorrect 4 ms 4992 KB Output isn't correct
53 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 88 ms 17908 KB Output is correct
2 Correct 112 ms 17900 KB Output is correct
3 Correct 55 ms 13568 KB Output is correct
4 Correct 12 ms 6892 KB Output is correct
5 Correct 13 ms 6124 KB Output is correct
6 Correct 22 ms 7788 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 45 ms 9708 KB Output is correct
9 Correct 56 ms 11500 KB Output is correct
10 Correct 5 ms 5100 KB Output is correct
11 Correct 118 ms 13420 KB Output is correct
12 Correct 130 ms 15772 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 3 ms 5100 KB Output is correct
15 Correct 4 ms 5100 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 3 ms 5100 KB Output is correct
19 Correct 3 ms 5100 KB Output is correct
20 Correct 4 ms 5100 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 ms 5100 KB Output is correct
24 Correct 3 ms 5100 KB Output is correct
25 Correct 6 ms 5116 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 5 ms 5100 KB Output is correct
28 Correct 4 ms 4972 KB Output is correct
29 Correct 4 ms 5100 KB Output is correct
30 Correct 3 ms 5100 KB Output is correct
31 Correct 3 ms 4972 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 4 ms 4972 KB Output is correct
34 Correct 4 ms 5100 KB Output is correct
35 Correct 4 ms 5228 KB Output is correct
36 Correct 3 ms 4972 KB Output is correct
37 Correct 4 ms 5100 KB Output is correct
38 Correct 4 ms 5100 KB Output is correct
39 Correct 95 ms 17900 KB Output is correct
40 Correct 92 ms 17900 KB Output is correct
41 Correct 54 ms 13420 KB Output is correct
42 Correct 12 ms 6892 KB Output is correct
43 Correct 4 ms 5100 KB Output is correct
44 Correct 4 ms 5100 KB Output is correct
45 Correct 3 ms 5100 KB Output is correct
46 Correct 4 ms 5100 KB Output is correct
47 Correct 4 ms 5100 KB Output is correct
48 Correct 4 ms 5100 KB Output is correct
49 Correct 4 ms 5100 KB Output is correct
50 Correct 4 ms 5100 KB Output is correct
51 Correct 3 ms 5100 KB Output is correct
52 Correct 3 ms 5100 KB Output is correct
53 Correct 4 ms 5100 KB Output is correct
54 Correct 4 ms 5100 KB Output is correct
55 Correct 5 ms 5100 KB Output is correct
56 Correct 4 ms 5100 KB Output is correct
57 Correct 157 ms 12832 KB Output is correct
58 Correct 144 ms 12780 KB Output is correct
59 Correct 132 ms 13036 KB Output is correct
60 Correct 149 ms 13036 KB Output is correct
61 Correct 140 ms 13292 KB Output is correct
62 Correct 148 ms 13164 KB Output is correct
63 Correct 120 ms 13036 KB Output is correct
64 Incorrect 108 ms 13036 KB Output isn't correct
65 Halted 0 ms 0 KB -