Submission #356368

# Submission time Handle Problem Language Result Execution time Memory
356368 2021-01-23T09:54:39 Z sean617 Dreaming (IOI13_dreaming) C++
47 / 100
170 ms 25324 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], h1[SZ], h2[SZ], num1[SZ], num2[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 (w == mx) 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 f(int p, int q) {
    int i, t, mx1 = 0, mx2 = 0, t2, n1, n2;
    v[p] = cnt;
    for (i =0 ; i < a[p].size(); i++) {
        t = a[p][i];
        if (t == q) continue;
        t2 = f(t, p) + b[p][i];
        if (t2 > mx1) {
            n2 = n1;
            n1 = t;
            mx2 = mx1;
            mx1 = t2;
        } else if (t2 > mx2) {
            mx2 = t2;
            n2 = t;
        }
    }
    h1[p] = mx1;
    h2[p] = mx2;
    num1[p] = n1;
    num2[p] = n2;
    return mx1;
}

int g(int p, int q, int w) {
    int i, t, tt, t1, mx1 = 0;
    for (i = 0; i < a[p].size(); i++) {
        t = a[p][i];
        if (t == q) continue;
        if (num1[p] == t) t1 = h2[p];
        else t1 = h1[p];
        t1 = max(t1, w);
        mx1 = max(mx1, g(t, p, t1 + b[p][i]) + b[p][i]);
    }
    tt = max(w, mx1);
    mx = max(mx, tt);
    mn = min(mn, tt);
    return mx1;
}

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 = 0;
        mn = MM;
        f(i, 0);
        g(i, 0, 0);
//        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;
        }
        ans = max(ans, mx);
//        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 'int f(int, int)':
dreaming.cpp:43:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     for (i =0 ; i < a[p].size(); i++) {
      |                 ~~^~~~~~~~~~~~~
dreaming.cpp: In function 'int g(int, int, int)':
dreaming.cpp:66:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |     for (i = 0; i < a[p].size(); i++) {
      |                 ~~^~~~~~~~~~~~~
dreaming.cpp: In function 'int travelTime(int, int, int, int*, int*, int*)':
dreaming.cpp:81:12: warning: unused variable 'j' [-Wunused-variable]
   81 |     int i, j, t1, t2, t3;
      |            ^
dreaming.cpp: In function 'int f(int, int)':
dreaming.cpp:60:13: warning: 'n2' may be used uninitialized in this function [-Wmaybe-uninitialized]
   60 |     num2[p] = n2;
      |     ~~~~~~~~^~~~
dreaming.cpp:59:13: warning: 'n1' may be used uninitialized in this function [-Wmaybe-uninitialized]
   59 |     num1[p] = n1;
      |     ~~~~~~~~^~~~
# Verdict Execution time Memory Grader output
1 Correct 90 ms 19052 KB Output is correct
2 Correct 88 ms 18668 KB Output is correct
3 Correct 54 ms 15980 KB Output is correct
4 Correct 12 ms 7148 KB Output is correct
5 Correct 12 ms 6380 KB Output is correct
6 Correct 19 ms 8300 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 40 ms 11116 KB Output is correct
9 Correct 58 ms 13932 KB Output is correct
10 Correct 5 ms 5100 KB Output is correct
11 Correct 104 ms 15520 KB Output is correct
12 Correct 127 ms 17132 KB Output is correct
13 Correct 4 ms 5228 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 4 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 5 ms 5248 KB Output is correct
5 Correct 4 ms 5100 KB Output is correct
6 Correct 4 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 4 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5376 KB Output is correct
14 Correct 4 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 4 ms 5120 KB Output is correct
19 Correct 4 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 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 90 ms 19052 KB Output is correct
2 Correct 88 ms 18668 KB Output is correct
3 Correct 54 ms 15980 KB Output is correct
4 Correct 12 ms 7148 KB Output is correct
5 Correct 12 ms 6380 KB Output is correct
6 Correct 19 ms 8300 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 40 ms 11116 KB Output is correct
9 Correct 58 ms 13932 KB Output is correct
10 Correct 5 ms 5100 KB Output is correct
11 Correct 104 ms 15520 KB Output is correct
12 Correct 127 ms 17132 KB Output is correct
13 Correct 4 ms 5228 KB Output is correct
14 Correct 4 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 5 ms 5248 KB Output is correct
18 Correct 4 ms 5100 KB Output is correct
19 Correct 4 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 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5376 KB Output is correct
27 Correct 4 ms 5100 KB Output is correct
28 Correct 4 ms 5100 KB Output is correct
29 Correct 4 ms 5100 KB Output is correct
30 Correct 4 ms 5100 KB Output is correct
31 Correct 4 ms 5120 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 4 ms 5100 KB Output is correct
34 Correct 4 ms 5100 KB Output is correct
35 Correct 4 ms 5100 KB Output is correct
36 Correct 4 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 92 ms 19052 KB Output is correct
40 Correct 88 ms 18668 KB Output is correct
41 Correct 54 ms 15980 KB Output is correct
42 Correct 14 ms 7148 KB Output is correct
43 Correct 5 ms 5100 KB Output is correct
44 Correct 4 ms 5100 KB Output is correct
45 Correct 4 ms 5100 KB Output is correct
46 Correct 4 ms 5120 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 4 ms 5100 KB Output is correct
52 Correct 4 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 4 ms 5100 KB Output is correct
56 Correct 5 ms 5100 KB Output is correct
57 Correct 142 ms 15340 KB Output is correct
58 Correct 138 ms 15340 KB Output is correct
59 Correct 143 ms 15468 KB Output is correct
60 Correct 142 ms 15340 KB Output is correct
61 Correct 130 ms 15724 KB Output is correct
62 Correct 163 ms 15640 KB Output is correct
63 Correct 134 ms 15468 KB Output is correct
64 Correct 140 ms 15392 KB Output is correct
65 Correct 140 ms 16236 KB Output is correct
66 Correct 134 ms 16364 KB Output is correct
67 Correct 156 ms 15980 KB Output is correct
68 Correct 139 ms 15980 KB Output is correct
69 Correct 148 ms 16236 KB Output is correct
70 Correct 145 ms 16348 KB Output is correct
71 Correct 4 ms 5100 KB Output is correct
72 Correct 6 ms 5356 KB Output is correct
73 Correct 5 ms 5356 KB Output is correct
74 Correct 6 ms 5356 KB Output is correct
75 Correct 6 ms 5356 KB Output is correct
76 Correct 5 ms 5356 KB Output is correct
77 Correct 6 ms 5356 KB Output is correct
78 Correct 5 ms 5356 KB Output is correct
79 Correct 5 ms 5356 KB Output is correct
80 Correct 137 ms 15852 KB Output is correct
81 Correct 157 ms 15852 KB Output is correct
82 Correct 133 ms 16236 KB Output is correct
83 Correct 157 ms 16168 KB Output is correct
84 Correct 5 ms 5356 KB Output is correct
85 Correct 6 ms 5356 KB Output is correct
86 Correct 5 ms 5356 KB Output is correct
87 Correct 6 ms 5356 KB Output is correct
88 Correct 5 ms 5356 KB Output is correct
89 Correct 5 ms 5356 KB Output is correct
90 Correct 5 ms 5356 KB Output is correct
91 Correct 6 ms 5356 KB Output is correct
92 Correct 6 ms 5356 KB Output is correct
93 Correct 5 ms 5356 KB Output is correct
94 Correct 3 ms 5100 KB Output is correct
95 Correct 4 ms 5100 KB Output is correct
96 Correct 4 ms 5100 KB Output is correct
97 Correct 4 ms 5100 KB Output is correct
98 Correct 4 ms 5100 KB Output is correct
99 Correct 4 ms 5100 KB Output is correct
100 Correct 4 ms 5100 KB Output is correct
101 Correct 4 ms 5100 KB Output is correct
102 Correct 4 ms 5100 KB Output is correct
103 Correct 4 ms 5100 KB Output is correct
104 Correct 11 ms 6380 KB Output is correct
105 Correct 20 ms 8300 KB Output is correct
106 Correct 4 ms 5100 KB Output is correct
107 Correct 41 ms 11116 KB Output is correct
108 Correct 61 ms 14060 KB Output is correct
109 Correct 5 ms 5100 KB Output is correct
110 Correct 91 ms 15852 KB Output is correct
111 Correct 113 ms 17644 KB Output is correct
112 Correct 4 ms 5228 KB Output is correct
113 Correct 170 ms 25324 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 44 ms 11628 KB Output is correct
2 Correct 40 ms 11628 KB Output is correct
3 Correct 49 ms 11628 KB Output is correct
4 Correct 37 ms 11628 KB Output is correct
5 Correct 39 ms 11500 KB Output is correct
6 Correct 43 ms 12012 KB Output is correct
7 Correct 48 ms 11884 KB Output is correct
8 Correct 37 ms 11500 KB Output is correct
9 Correct 39 ms 11500 KB Output is correct
10 Correct 49 ms 11756 KB Output is correct
11 Correct 4 ms 5100 KB Output is correct
12 Correct 7 ms 7020 KB Output is correct
13 Correct 7 ms 7020 KB Output is correct
14 Correct 7 ms 7020 KB Output is correct
15 Correct 7 ms 7020 KB Output is correct
16 Correct 7 ms 7020 KB Output is correct
17 Correct 7 ms 7020 KB Output is correct
18 Correct 9 ms 7140 KB Output is correct
19 Correct 7 ms 7020 KB Output is correct
20 Incorrect 4 ms 5100 KB Output isn't correct
21 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 4 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 5 ms 5248 KB Output is correct
5 Correct 4 ms 5100 KB Output is correct
6 Correct 4 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 4 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5376 KB Output is correct
14 Correct 4 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 4 ms 5120 KB Output is correct
19 Correct 4 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 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5248 KB Output is correct
27 Correct 5 ms 5224 KB Output is correct
28 Correct 5 ms 5356 KB Output is correct
29 Correct 4 ms 5100 KB Output is correct
30 Correct 5 ms 5228 KB Output is correct
31 Correct 5 ms 5356 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 5 ms 5376 KB Output is correct
34 Correct 6 ms 5356 KB Output is correct
35 Correct 4 ms 5100 KB Output is correct
36 Correct 4 ms 5100 KB Output is correct
37 Correct 4 ms 5100 KB Output is correct
38 Correct 4 ms 5120 KB Output is correct
39 Correct 4 ms 5100 KB Output is correct
40 Correct 4 ms 5100 KB Output is correct
41 Correct 4 ms 5100 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 4 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 5 ms 5120 KB Output is correct
51 Correct 4 ms 5228 KB Output is correct
52 Incorrect 4 ms 5100 KB Output isn't correct
53 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 90 ms 19052 KB Output is correct
2 Correct 88 ms 18668 KB Output is correct
3 Correct 54 ms 15980 KB Output is correct
4 Correct 12 ms 7148 KB Output is correct
5 Correct 12 ms 6380 KB Output is correct
6 Correct 19 ms 8300 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 40 ms 11116 KB Output is correct
9 Correct 58 ms 13932 KB Output is correct
10 Correct 5 ms 5100 KB Output is correct
11 Correct 104 ms 15520 KB Output is correct
12 Correct 127 ms 17132 KB Output is correct
13 Correct 4 ms 5228 KB Output is correct
14 Correct 4 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 5 ms 5248 KB Output is correct
18 Correct 4 ms 5100 KB Output is correct
19 Correct 4 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 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5376 KB Output is correct
27 Correct 4 ms 5100 KB Output is correct
28 Correct 4 ms 5100 KB Output is correct
29 Correct 4 ms 5100 KB Output is correct
30 Correct 4 ms 5100 KB Output is correct
31 Correct 4 ms 5120 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 4 ms 5100 KB Output is correct
34 Correct 4 ms 5100 KB Output is correct
35 Correct 4 ms 5100 KB Output is correct
36 Correct 4 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 92 ms 19052 KB Output is correct
40 Correct 88 ms 18668 KB Output is correct
41 Correct 54 ms 15980 KB Output is correct
42 Correct 14 ms 7148 KB Output is correct
43 Correct 5 ms 5100 KB Output is correct
44 Correct 4 ms 5100 KB Output is correct
45 Correct 4 ms 5100 KB Output is correct
46 Correct 4 ms 5120 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 4 ms 5100 KB Output is correct
52 Correct 4 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 4 ms 5100 KB Output is correct
56 Correct 5 ms 5100 KB Output is correct
57 Correct 142 ms 15340 KB Output is correct
58 Correct 138 ms 15340 KB Output is correct
59 Correct 143 ms 15468 KB Output is correct
60 Correct 142 ms 15340 KB Output is correct
61 Correct 130 ms 15724 KB Output is correct
62 Correct 163 ms 15640 KB Output is correct
63 Correct 134 ms 15468 KB Output is correct
64 Correct 140 ms 15392 KB Output is correct
65 Correct 140 ms 16236 KB Output is correct
66 Correct 134 ms 16364 KB Output is correct
67 Correct 156 ms 15980 KB Output is correct
68 Correct 139 ms 15980 KB Output is correct
69 Correct 148 ms 16236 KB Output is correct
70 Correct 145 ms 16348 KB Output is correct
71 Correct 4 ms 5100 KB Output is correct
72 Correct 6 ms 5356 KB Output is correct
73 Correct 5 ms 5356 KB Output is correct
74 Correct 6 ms 5356 KB Output is correct
75 Correct 6 ms 5356 KB Output is correct
76 Correct 5 ms 5356 KB Output is correct
77 Correct 6 ms 5356 KB Output is correct
78 Correct 5 ms 5356 KB Output is correct
79 Correct 5 ms 5356 KB Output is correct
80 Correct 137 ms 15852 KB Output is correct
81 Correct 157 ms 15852 KB Output is correct
82 Correct 133 ms 16236 KB Output is correct
83 Correct 157 ms 16168 KB Output is correct
84 Correct 5 ms 5356 KB Output is correct
85 Correct 6 ms 5356 KB Output is correct
86 Correct 5 ms 5356 KB Output is correct
87 Correct 6 ms 5356 KB Output is correct
88 Correct 5 ms 5356 KB Output is correct
89 Correct 5 ms 5356 KB Output is correct
90 Correct 5 ms 5356 KB Output is correct
91 Correct 6 ms 5356 KB Output is correct
92 Correct 6 ms 5356 KB Output is correct
93 Correct 5 ms 5356 KB Output is correct
94 Correct 3 ms 5100 KB Output is correct
95 Correct 4 ms 5100 KB Output is correct
96 Correct 4 ms 5100 KB Output is correct
97 Correct 4 ms 5100 KB Output is correct
98 Correct 4 ms 5100 KB Output is correct
99 Correct 4 ms 5100 KB Output is correct
100 Correct 4 ms 5100 KB Output is correct
101 Correct 4 ms 5100 KB Output is correct
102 Correct 4 ms 5100 KB Output is correct
103 Correct 4 ms 5100 KB Output is correct
104 Correct 11 ms 6380 KB Output is correct
105 Correct 20 ms 8300 KB Output is correct
106 Correct 4 ms 5100 KB Output is correct
107 Correct 41 ms 11116 KB Output is correct
108 Correct 61 ms 14060 KB Output is correct
109 Correct 5 ms 5100 KB Output is correct
110 Correct 91 ms 15852 KB Output is correct
111 Correct 113 ms 17644 KB Output is correct
112 Correct 4 ms 5228 KB Output is correct
113 Correct 170 ms 25324 KB Output is correct
114 Correct 44 ms 11628 KB Output is correct
115 Correct 40 ms 11628 KB Output is correct
116 Correct 49 ms 11628 KB Output is correct
117 Correct 37 ms 11628 KB Output is correct
118 Correct 39 ms 11500 KB Output is correct
119 Correct 43 ms 12012 KB Output is correct
120 Correct 48 ms 11884 KB Output is correct
121 Correct 37 ms 11500 KB Output is correct
122 Correct 39 ms 11500 KB Output is correct
123 Correct 49 ms 11756 KB Output is correct
124 Correct 4 ms 5100 KB Output is correct
125 Correct 7 ms 7020 KB Output is correct
126 Correct 7 ms 7020 KB Output is correct
127 Correct 7 ms 7020 KB Output is correct
128 Correct 7 ms 7020 KB Output is correct
129 Correct 7 ms 7020 KB Output is correct
130 Correct 7 ms 7020 KB Output is correct
131 Correct 9 ms 7140 KB Output is correct
132 Correct 7 ms 7020 KB Output is correct
133 Incorrect 4 ms 5100 KB Output isn't correct
134 Halted 0 ms 0 KB -