oj.uz

Submission #1043784

# Submission time Handle Problem Language Result Execution time Memory
1043784 2024-08-04T17:18:57 Z vanea Dreaming (IOI13_dreaming) C++14
47 / 100
 37 ms 18044 KB 
#include <bits/stdc++.h>
#include "dreaming.h"
using namespace std;
using ll = long long;
using ld = long double;

const int mxN = 1e5+10;

vector<array<int, 2>> adj[mxN];
bool vis[mxN];
ll ans = 0, mx1 = 0, mx2 = 0, mx_1[mxN], mx_2[mxN];

ll dfs(int node, int p) {
    ll mx1 = 0, mx2 = 0;
    vis[node] = true;
    for(auto [it, w] : adj[node]) {
        if(it == p) continue;
        mx2 = max(mx2, dfs(it, node)+w);
        if(mx2 > mx1) swap(mx1, mx2);
    }
    ans = max(ans, mx2+mx1);
    mx_1[node] = mx1;
    mx_2[node] = mx2;
    return mx1;
}

ll dfs1(int node, int p) {
    ll mn = mx_1[node];
    vis[node] = true;
    for(auto [it, w] : adj[node]) {
        if(it == p) continue;
        if(mx_1[node]-w == mx_1[it]) {
            mx_2[it] = max(mx_2[it], mx_2[node]+w);
            if(mx_2[it] > mx_1[it]) swap(mx_2[it], mx_1[it]);
        }
        else {
            int init = mx_1[it];
            mx_2[it] = max(mx_2[it], mx_1[node]+w);
            if(mx_2[it] > mx_1[it]) swap(mx_2[it], mx_1[it]);
            if(mx_2[node]-w != init) {
                mx_2[it] = max(mx_2[it], mx_2[node]+w);
            }
        }
        mn = min(mn, dfs1(it, node));
    }
    return mn;
}

int travelTime(int n, int m, int l, int a[], int b[], int t[]) {
    for(int i = 0; i < m; i++) {
        adj[a[i]].push_back({b[i], t[i]});
        adj[b[i]].push_back({a[i], t[i]});
    }
    for(int i = 0; i < n; i++) {
        if(!vis[i]) dfs(i, -1);
    }
    if(m == n-1) return ans;
    memset(vis, false, sizeof vis);
    for(int i = 0; i < n; i++) {
        if(!vis[i]) {
            mx2 = max(mx2, dfs1(i, -1));
            if(mx2 > mx1) swap(mx1, mx2);
        }
    }
    return max(ans, mx1+mx2+l);
}
/*
int main()
{
    int a[8] = {0,8,2,5,5,1,1,10};
    int b[8] = {8,2,7,11,1,3,9,6};
    int c[8] = {4,2,4,3,7,1,5,3};
    cout << travelTime(12, 8, 2, a, b, c);
}*/

Compilation message

dreaming.cpp: In function 'll dfs(int, int)':
dreaming.cpp:16:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   16 |     for(auto [it, w] : adj[node]) {
      |              ^
dreaming.cpp: In function 'll dfs1(int, int)':
dreaming.cpp:30:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   30 |     for(auto [it, w] : adj[node]) {
      |              ^

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 12380 KB Output is correct
2 Correct 28 ms 11920 KB Output is correct
3 Correct 15 ms 11356 KB Output is correct
4 Correct 4 ms 6260 KB Output is correct
5 Correct 3 ms 5980 KB Output is correct
6 Correct 7 ms 7004 KB Output is correct
7 Correct 1 ms 5212 KB Output is correct
8 Correct 13 ms 8860 KB Output is correct
9 Correct 16 ms 10904 KB Output is correct
10 Correct 1 ms 5464 KB Output is correct
11 Correct 24 ms 11448 KB Output is correct
12 Correct 31 ms 12456 KB Output is correct
13 Correct 1 ms 5464 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 5212 KB Output is correct
2 Correct 1 ms 5212 KB Output is correct
3 Correct 1 ms 5208 KB Output is correct
4 Correct 1 ms 5212 KB Output is correct
5 Correct 2 ms 5212 KB Output is correct
6 Correct 1 ms 5212 KB Output is correct
7 Correct 1 ms 5212 KB Output is correct
8 Correct 1 ms 5212 KB Output is correct
9 Correct 1 ms 5212 KB Output is correct
10 Correct 1 ms 5444 KB Output is correct
11 Correct 1 ms 5212 KB Output is correct
12 Correct 1 ms 5208 KB Output is correct
13 Correct 1 ms 5464 KB Output is correct
14 Correct 1 ms 5208 KB Output is correct
15 Correct 1 ms 5212 KB Output is correct
16 Correct 1 ms 5212 KB Output is correct
17 Correct 1 ms 5448 KB Output is correct
18 Correct 1 ms 5212 KB Output is correct
19 Correct 1 ms 5212 KB Output is correct
20 Correct 1 ms 5212 KB Output is correct
21 Correct 1 ms 5212 KB Output is correct
22 Correct 1 ms 5208 KB Output is correct
23 Correct 1 ms 5212 KB Output is correct
24 Correct 1 ms 5212 KB Output is correct
25 Correct 1 ms 5212 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 12380 KB Output is correct
2 Correct 28 ms 11920 KB Output is correct
3 Correct 15 ms 11356 KB Output is correct
4 Correct 4 ms 6260 KB Output is correct
5 Correct 3 ms 5980 KB Output is correct
6 Correct 7 ms 7004 KB Output is correct
7 Correct 1 ms 5212 KB Output is correct
8 Correct 13 ms 8860 KB Output is correct
9 Correct 16 ms 10904 KB Output is correct
10 Correct 1 ms 5464 KB Output is correct
11 Correct 24 ms 11448 KB Output is correct
12 Correct 31 ms 12456 KB Output is correct
13 Correct 1 ms 5464 KB Output is correct
14 Correct 1 ms 5212 KB Output is correct
15 Correct 1 ms 5212 KB Output is correct
16 Correct 1 ms 5208 KB Output is correct
17 Correct 1 ms 5212 KB Output is correct
18 Correct 2 ms 5212 KB Output is correct
19 Correct 1 ms 5212 KB Output is correct
20 Correct 1 ms 5212 KB Output is correct
21 Correct 1 ms 5212 KB Output is correct
22 Correct 1 ms 5212 KB Output is correct
23 Correct 1 ms 5444 KB Output is correct
24 Correct 1 ms 5212 KB Output is correct
25 Correct 1 ms 5208 KB Output is correct
26 Correct 1 ms 5464 KB Output is correct
27 Correct 1 ms 5208 KB Output is correct
28 Correct 1 ms 5212 KB Output is correct
29 Correct 1 ms 5212 KB Output is correct
30 Correct 1 ms 5448 KB Output is correct
31 Correct 1 ms 5212 KB Output is correct
32 Correct 1 ms 5212 KB Output is correct
33 Correct 1 ms 5212 KB Output is correct
34 Correct 1 ms 5212 KB Output is correct
35 Correct 1 ms 5208 KB Output is correct
36 Correct 1 ms 5212 KB Output is correct
37 Correct 1 ms 5212 KB Output is correct
38 Correct 1 ms 5212 KB Output is correct
39 Correct 26 ms 13660 KB Output is correct
40 Correct 26 ms 13280 KB Output is correct
41 Correct 18 ms 12412 KB Output is correct
42 Correct 4 ms 6560 KB Output is correct
43 Correct 2 ms 5208 KB Output is correct
44 Correct 2 ms 5464 KB Output is correct
45 Correct 1 ms 5212 KB Output is correct
46 Correct 1 ms 5208 KB Output is correct
47 Correct 1 ms 5212 KB Output is correct
48 Correct 1 ms 5212 KB Output is correct
49 Correct 1 ms 5212 KB Output is correct
50 Correct 2 ms 5212 KB Output is correct
51 Correct 1 ms 5212 KB Output is correct
52 Correct 1 ms 5212 KB Output is correct
53 Correct 1 ms 5212 KB Output is correct
54 Correct 1 ms 5212 KB Output is correct
55 Correct 1 ms 5208 KB Output is correct
56 Correct 1 ms 5444 KB Output is correct
57 Correct 29 ms 10832 KB Output is correct
58 Correct 30 ms 10836 KB Output is correct
59 Correct 28 ms 10836 KB Output is correct
60 Correct 30 ms 10836 KB Output is correct
61 Correct 28 ms 10832 KB Output is correct
62 Correct 27 ms 10836 KB Output is correct
63 Correct 26 ms 10576 KB Output is correct
64 Correct 30 ms 10580 KB Output is correct
65 Correct 27 ms 10844 KB Output is correct
66 Correct 30 ms 10716 KB Output is correct
67 Correct 29 ms 10836 KB Output is correct
68 Correct 29 ms 10832 KB Output is correct
69 Correct 36 ms 10968 KB Output is correct
70 Correct 29 ms 11088 KB Output is correct
71 Correct 1 ms 5212 KB Output is correct
72 Correct 2 ms 5488 KB Output is correct
73 Correct 1 ms 5484 KB Output is correct
74 Correct 2 ms 5468 KB Output is correct
75 Correct 2 ms 5468 KB Output is correct
76 Correct 2 ms 5468 KB Output is correct
77 Correct 2 ms 5468 KB Output is correct
78 Correct 1 ms 5620 KB Output is correct
79 Correct 1 ms 5468 KB Output is correct
80 Correct 31 ms 10844 KB Output is correct
81 Correct 31 ms 10860 KB Output is correct
82 Correct 29 ms 10836 KB Output is correct
83 Correct 33 ms 11004 KB Output is correct
84 Correct 1 ms 5468 KB Output is correct
85 Correct 1 ms 5468 KB Output is correct
86 Correct 1 ms 5456 KB Output is correct
87 Correct 1 ms 5468 KB Output is correct
88 Correct 1 ms 5508 KB Output is correct
89 Correct 2 ms 5468 KB Output is correct
90 Correct 1 ms 5468 KB Output is correct
91 Correct 2 ms 5468 KB Output is correct
92 Correct 2 ms 5468 KB Output is correct
93 Correct 1 ms 5468 KB Output is correct
94 Correct 1 ms 5212 KB Output is correct
95 Correct 1 ms 5212 KB Output is correct
96 Correct 1 ms 5212 KB Output is correct
97 Correct 1 ms 5440 KB Output is correct
98 Correct 1 ms 5440 KB Output is correct
99 Correct 1 ms 5212 KB Output is correct
100 Correct 1 ms 5212 KB Output is correct
101 Correct 1 ms 5212 KB Output is correct
102 Correct 1 ms 5212 KB Output is correct
103 Correct 1 ms 5212 KB Output is correct
104 Correct 3 ms 5980 KB Output is correct
105 Correct 7 ms 7260 KB Output is correct
106 Correct 1 ms 5468 KB Output is correct
107 Correct 12 ms 8900 KB Output is correct
108 Correct 16 ms 10860 KB Output is correct
109 Correct 1 ms 5468 KB Output is correct
110 Correct 22 ms 11356 KB Output is correct
111 Correct 27 ms 12468 KB Output is correct
112 Correct 1 ms 5468 KB Output is correct
113 Correct 37 ms 18044 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 7516 KB Output is correct
2 Incorrect 9 ms 7516 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 5212 KB Output is correct
2 Correct 1 ms 5212 KB Output is correct
3 Correct 1 ms 5208 KB Output is correct
4 Correct 1 ms 5212 KB Output is correct
5 Correct 2 ms 5212 KB Output is correct
6 Correct 1 ms 5212 KB Output is correct
7 Correct 1 ms 5212 KB Output is correct
8 Correct 1 ms 5212 KB Output is correct
9 Correct 1 ms 5212 KB Output is correct
10 Correct 1 ms 5444 KB Output is correct
11 Correct 1 ms 5212 KB Output is correct
12 Correct 1 ms 5208 KB Output is correct
13 Correct 1 ms 5464 KB Output is correct
14 Correct 1 ms 5208 KB Output is correct
15 Correct 1 ms 5212 KB Output is correct
16 Correct 1 ms 5212 KB Output is correct
17 Correct 1 ms 5448 KB Output is correct
18 Correct 1 ms 5212 KB Output is correct
19 Correct 1 ms 5212 KB Output is correct
20 Correct 1 ms 5212 KB Output is correct
21 Correct 1 ms 5212 KB Output is correct
22 Correct 1 ms 5208 KB Output is correct
23 Correct 1 ms 5212 KB Output is correct
24 Correct 1 ms 5212 KB Output is correct
25 Correct 1 ms 5212 KB Output is correct
26 Correct 1 ms 5472 KB Output is correct
27 Correct 1 ms 5296 KB Output is correct
28 Correct 1 ms 5468 KB Output is correct
29 Correct 1 ms 5468 KB Output is correct
30 Correct 1 ms 5468 KB Output is correct
31 Correct 1 ms 5468 KB Output is correct
32 Incorrect 1 ms 5456 KB Output isn't correct
33 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 12380 KB Output is correct
2 Correct 28 ms 11920 KB Output is correct
3 Correct 15 ms 11356 KB Output is correct
4 Correct 4 ms 6260 KB Output is correct
5 Correct 3 ms 5980 KB Output is correct
6 Correct 7 ms 7004 KB Output is correct
7 Correct 1 ms 5212 KB Output is correct
8 Correct 13 ms 8860 KB Output is correct
9 Correct 16 ms 10904 KB Output is correct
10 Correct 1 ms 5464 KB Output is correct
11 Correct 24 ms 11448 KB Output is correct
12 Correct 31 ms 12456 KB Output is correct
13 Correct 1 ms 5464 KB Output is correct
14 Correct 1 ms 5212 KB Output is correct
15 Correct 1 ms 5212 KB Output is correct
16 Correct 1 ms 5208 KB Output is correct
17 Correct 1 ms 5212 KB Output is correct
18 Correct 2 ms 5212 KB Output is correct
19 Correct 1 ms 5212 KB Output is correct
20 Correct 1 ms 5212 KB Output is correct
21 Correct 1 ms 5212 KB Output is correct
22 Correct 1 ms 5212 KB Output is correct
23 Correct 1 ms 5444 KB Output is correct
24 Correct 1 ms 5212 KB Output is correct
25 Correct 1 ms 5208 KB Output is correct
26 Correct 1 ms 5464 KB Output is correct
27 Correct 1 ms 5208 KB Output is correct
28 Correct 1 ms 5212 KB Output is correct
29 Correct 1 ms 5212 KB Output is correct
30 Correct 1 ms 5448 KB Output is correct
31 Correct 1 ms 5212 KB Output is correct
32 Correct 1 ms 5212 KB Output is correct
33 Correct 1 ms 5212 KB Output is correct
34 Correct 1 ms 5212 KB Output is correct
35 Correct 1 ms 5208 KB Output is correct
36 Correct 1 ms 5212 KB Output is correct
37 Correct 1 ms 5212 KB Output is correct
38 Correct 1 ms 5212 KB Output is correct
39 Correct 26 ms 13660 KB Output is correct
40 Correct 26 ms 13280 KB Output is correct
41 Correct 18 ms 12412 KB Output is correct
42 Correct 4 ms 6560 KB Output is correct
43 Correct 2 ms 5208 KB Output is correct
44 Correct 2 ms 5464 KB Output is correct
45 Correct 1 ms 5212 KB Output is correct
46 Correct 1 ms 5208 KB Output is correct
47 Correct 1 ms 5212 KB Output is correct
48 Correct 1 ms 5212 KB Output is correct
49 Correct 1 ms 5212 KB Output is correct
50 Correct 2 ms 5212 KB Output is correct
51 Correct 1 ms 5212 KB Output is correct
52 Correct 1 ms 5212 KB Output is correct
53 Correct 1 ms 5212 KB Output is correct
54 Correct 1 ms 5212 KB Output is correct
55 Correct 1 ms 5208 KB Output is correct
56 Correct 1 ms 5444 KB Output is correct
57 Correct 29 ms 10832 KB Output is correct
58 Correct 30 ms 10836 KB Output is correct
59 Correct 28 ms 10836 KB Output is correct
60 Correct 30 ms 10836 KB Output is correct
61 Correct 28 ms 10832 KB Output is correct
62 Correct 27 ms 10836 KB Output is correct
63 Correct 26 ms 10576 KB Output is correct
64 Correct 30 ms 10580 KB Output is correct
65 Correct 27 ms 10844 KB Output is correct
66 Correct 30 ms 10716 KB Output is correct
67 Correct 29 ms 10836 KB Output is correct
68 Correct 29 ms 10832 KB Output is correct
69 Correct 36 ms 10968 KB Output is correct
70 Correct 29 ms 11088 KB Output is correct
71 Correct 1 ms 5212 KB Output is correct
72 Correct 2 ms 5488 KB Output is correct
73 Correct 1 ms 5484 KB Output is correct
74 Correct 2 ms 5468 KB Output is correct
75 Correct 2 ms 5468 KB Output is correct
76 Correct 2 ms 5468 KB Output is correct
77 Correct 2 ms 5468 KB Output is correct
78 Correct 1 ms 5620 KB Output is correct
79 Correct 1 ms 5468 KB Output is correct
80 Correct 31 ms 10844 KB Output is correct
81 Correct 31 ms 10860 KB Output is correct
82 Correct 29 ms 10836 KB Output is correct
83 Correct 33 ms 11004 KB Output is correct
84 Correct 1 ms 5468 KB Output is correct
85 Correct 1 ms 5468 KB Output is correct
86 Correct 1 ms 5456 KB Output is correct
87 Correct 1 ms 5468 KB Output is correct
88 Correct 1 ms 5508 KB Output is correct
89 Correct 2 ms 5468 KB Output is correct
90 Correct 1 ms 5468 KB Output is correct
91 Correct 2 ms 5468 KB Output is correct
92 Correct 2 ms 5468 KB Output is correct
93 Correct 1 ms 5468 KB Output is correct
94 Correct 1 ms 5212 KB Output is correct
95 Correct 1 ms 5212 KB Output is correct
96 Correct 1 ms 5212 KB Output is correct
97 Correct 1 ms 5440 KB Output is correct
98 Correct 1 ms 5440 KB Output is correct
99 Correct 1 ms 5212 KB Output is correct
100 Correct 1 ms 5212 KB Output is correct
101 Correct 1 ms 5212 KB Output is correct
102 Correct 1 ms 5212 KB Output is correct
103 Correct 1 ms 5212 KB Output is correct
104 Correct 3 ms 5980 KB Output is correct
105 Correct 7 ms 7260 KB Output is correct
106 Correct 1 ms 5468 KB Output is correct
107 Correct 12 ms 8900 KB Output is correct
108 Correct 16 ms 10860 KB Output is correct
109 Correct 1 ms 5468 KB Output is correct
110 Correct 22 ms 11356 KB Output is correct
111 Correct 27 ms 12468 KB Output is correct
112 Correct 1 ms 5468 KB Output is correct
113 Correct 37 ms 18044 KB Output is correct
114 Correct 11 ms 7516 KB Output is correct
115 Incorrect 9 ms 7516 KB Output isn't correct
116 Halted 0 ms 0 KB -