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답안 #1043786

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1043786 2024-08-04T17:31:57 Z vanea 꿈 (IOI13_dreaming) C++14
47 / 100
 36 ms 16304 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 {
            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]);
            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

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 12380 KB Output is correct
2 Correct 23 ms 12128 KB Output is correct
3 Correct 15 ms 11356 KB Output is correct
4 Correct 4 ms 6232 KB Output is correct
5 Correct 4 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 12 ms 8380 KB Output is correct
9 Correct 18 ms 10076 KB Output is correct
10 Correct 1 ms 5468 KB Output is correct
11 Correct 26 ms 10344 KB Output is correct
12 Correct 35 ms 11352 KB Output is correct
13 Correct 1 ms 5468 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 5212 KB Output is correct
2 Correct 1 ms 5212 KB Output is correct
3 Correct 1 ms 5212 KB Output is correct
4 Correct 1 ms 5212 KB Output is correct
5 Correct 1 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 5212 KB Output is correct
11 Correct 1 ms 5464 KB Output is correct
12 Correct 1 ms 5212 KB Output is correct
13 Correct 1 ms 5212 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 5212 KB Output is correct
17 Correct 1 ms 5212 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 5212 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

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 12380 KB Output is correct
2 Correct 23 ms 12128 KB Output is correct
3 Correct 15 ms 11356 KB Output is correct
4 Correct 4 ms 6232 KB Output is correct
5 Correct 4 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 12 ms 8380 KB Output is correct
9 Correct 18 ms 10076 KB Output is correct
10 Correct 1 ms 5468 KB Output is correct
11 Correct 26 ms 10344 KB Output is correct
12 Correct 35 ms 11352 KB Output is correct
13 Correct 1 ms 5468 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 5212 KB Output is correct
17 Correct 1 ms 5212 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 5212 KB Output is correct
23 Correct 1 ms 5212 KB Output is correct
24 Correct 1 ms 5464 KB Output is correct
25 Correct 1 ms 5212 KB Output is correct
26 Correct 1 ms 5212 KB Output is correct
27 Correct 1 ms 5212 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 5212 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 5212 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 25 ms 12380 KB Output is correct
40 Correct 23 ms 11868 KB Output is correct
41 Correct 16 ms 11356 KB Output is correct
42 Correct 4 ms 6236 KB Output is correct
43 Correct 1 ms 5296 KB Output is correct
44 Correct 1 ms 5212 KB Output is correct
45 Correct 1 ms 5212 KB Output is correct
46 Correct 1 ms 5212 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 1 ms 5208 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 5212 KB Output is correct
56 Correct 1 ms 5212 KB Output is correct
57 Correct 27 ms 9620 KB Output is correct
58 Correct 33 ms 9552 KB Output is correct
59 Correct 31 ms 9560 KB Output is correct
60 Correct 28 ms 9308 KB Output is correct
61 Correct 29 ms 9308 KB Output is correct
62 Correct 28 ms 9360 KB Output is correct
63 Correct 29 ms 9052 KB Output is correct
64 Correct 27 ms 9040 KB Output is correct
65 Correct 30 ms 9240 KB Output is correct
66 Correct 26 ms 9052 KB Output is correct
67 Correct 27 ms 9364 KB Output is correct
68 Correct 32 ms 9524 KB Output is correct
69 Correct 35 ms 9308 KB Output is correct
70 Correct 33 ms 9452 KB Output is correct
71 Correct 1 ms 5208 KB Output is correct
72 Correct 1 ms 5464 KB Output is correct
73 Correct 2 ms 5464 KB Output is correct
74 Correct 1 ms 5464 KB Output is correct
75 Correct 1 ms 5464 KB Output is correct
76 Correct 2 ms 5468 KB Output is correct
77 Correct 1 ms 5468 KB Output is correct
78 Correct 1 ms 5468 KB Output is correct
79 Correct 2 ms 5468 KB Output is correct
80 Correct 27 ms 9308 KB Output is correct
81 Correct 32 ms 9300 KB Output is correct
82 Correct 26 ms 9304 KB Output is correct
83 Correct 29 ms 9308 KB Output is correct
84 Correct 1 ms 5464 KB Output is correct
85 Correct 1 ms 5468 KB Output is correct
86 Correct 2 ms 5468 KB Output is correct
87 Correct 2 ms 5468 KB Output is correct
88 Correct 2 ms 5468 KB Output is correct
89 Correct 1 ms 5468 KB Output is correct
90 Correct 1 ms 5468 KB Output is correct
91 Correct 1 ms 5468 KB Output is correct
92 Correct 1 ms 5536 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 5212 KB Output is correct
98 Correct 1 ms 5464 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 6012 KB Output is correct
105 Correct 7 ms 7004 KB Output is correct
106 Correct 1 ms 5212 KB Output is correct
107 Correct 12 ms 8332 KB Output is correct
108 Correct 17 ms 10076 KB Output is correct
109 Correct 1 ms 5468 KB Output is correct
110 Correct 25 ms 10412 KB Output is correct
111 Correct 25 ms 11368 KB Output is correct
112 Correct 2 ms 5468 KB Output is correct
113 Correct 36 ms 16304 KB Output is correct

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 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

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 5212 KB Output is correct
2 Correct 1 ms 5212 KB Output is correct
3 Correct 1 ms 5212 KB Output is correct
4 Correct 1 ms 5212 KB Output is correct
5 Correct 1 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 5212 KB Output is correct
11 Correct 1 ms 5464 KB Output is correct
12 Correct 1 ms 5212 KB Output is correct
13 Correct 1 ms 5212 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 5212 KB Output is correct
17 Correct 1 ms 5212 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 5212 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 5468 KB Output is correct
27 Correct 1 ms 5468 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 5468 KB Output isn't correct
33 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 12380 KB Output is correct
2 Correct 23 ms 12128 KB Output is correct
3 Correct 15 ms 11356 KB Output is correct
4 Correct 4 ms 6232 KB Output is correct
5 Correct 4 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 12 ms 8380 KB Output is correct
9 Correct 18 ms 10076 KB Output is correct
10 Correct 1 ms 5468 KB Output is correct
11 Correct 26 ms 10344 KB Output is correct
12 Correct 35 ms 11352 KB Output is correct
13 Correct 1 ms 5468 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 5212 KB Output is correct
17 Correct 1 ms 5212 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 5212 KB Output is correct
23 Correct 1 ms 5212 KB Output is correct
24 Correct 1 ms 5464 KB Output is correct
25 Correct 1 ms 5212 KB Output is correct
26 Correct 1 ms 5212 KB Output is correct
27 Correct 1 ms 5212 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 5212 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 5212 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 25 ms 12380 KB Output is correct
40 Correct 23 ms 11868 KB Output is correct
41 Correct 16 ms 11356 KB Output is correct
42 Correct 4 ms 6236 KB Output is correct
43 Correct 1 ms 5296 KB Output is correct
44 Correct 1 ms 5212 KB Output is correct
45 Correct 1 ms 5212 KB Output is correct
46 Correct 1 ms 5212 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 1 ms 5208 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 5212 KB Output is correct
56 Correct 1 ms 5212 KB Output is correct
57 Correct 27 ms 9620 KB Output is correct
58 Correct 33 ms 9552 KB Output is correct
59 Correct 31 ms 9560 KB Output is correct
60 Correct 28 ms 9308 KB Output is correct
61 Correct 29 ms 9308 KB Output is correct
62 Correct 28 ms 9360 KB Output is correct
63 Correct 29 ms 9052 KB Output is correct
64 Correct 27 ms 9040 KB Output is correct
65 Correct 30 ms 9240 KB Output is correct
66 Correct 26 ms 9052 KB Output is correct
67 Correct 27 ms 9364 KB Output is correct
68 Correct 32 ms 9524 KB Output is correct
69 Correct 35 ms 9308 KB Output is correct
70 Correct 33 ms 9452 KB Output is correct
71 Correct 1 ms 5208 KB Output is correct
72 Correct 1 ms 5464 KB Output is correct
73 Correct 2 ms 5464 KB Output is correct
74 Correct 1 ms 5464 KB Output is correct
75 Correct 1 ms 5464 KB Output is correct
76 Correct 2 ms 5468 KB Output is correct
77 Correct 1 ms 5468 KB Output is correct
78 Correct 1 ms 5468 KB Output is correct
79 Correct 2 ms 5468 KB Output is correct
80 Correct 27 ms 9308 KB Output is correct
81 Correct 32 ms 9300 KB Output is correct
82 Correct 26 ms 9304 KB Output is correct
83 Correct 29 ms 9308 KB Output is correct
84 Correct 1 ms 5464 KB Output is correct
85 Correct 1 ms 5468 KB Output is correct
86 Correct 2 ms 5468 KB Output is correct
87 Correct 2 ms 5468 KB Output is correct
88 Correct 2 ms 5468 KB Output is correct
89 Correct 1 ms 5468 KB Output is correct
90 Correct 1 ms 5468 KB Output is correct
91 Correct 1 ms 5468 KB Output is correct
92 Correct 1 ms 5536 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 5212 KB Output is correct
98 Correct 1 ms 5464 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 6012 KB Output is correct
105 Correct 7 ms 7004 KB Output is correct
106 Correct 1 ms 5212 KB Output is correct
107 Correct 12 ms 8332 KB Output is correct
108 Correct 17 ms 10076 KB Output is correct
109 Correct 1 ms 5468 KB Output is correct
110 Correct 25 ms 10412 KB Output is correct
111 Correct 25 ms 11368 KB Output is correct
112 Correct 2 ms 5468 KB Output is correct
113 Correct 36 ms 16304 KB Output is correct
114 Correct 12 ms 7516 KB Output is correct
115 Incorrect 9 ms 7516 KB Output isn't correct
116 Halted 0 ms 0 KB -