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답안 #724473

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
724473 2023-04-15T11:18:44 Z Dan4Life 꿈 (IOI13_dreaming) C++17
47 / 100
 1000 ms 16144 KB 
#include "dreaming.h"
#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) a.begin(),a.end()
const int mxN = (int)1e5+10;
const int INF = (int)2e9;
int n, m, l;
vector<int> path;
vector<pair<int,int>> v, adj[mxN];
int vis[mxN];
int dis[mxN];
int CC=1;

bool dfs2(int s, int p, int t){
    if(s==t) return 1;
    for(auto x : adj[s]){
        int u = x.fi, w = x.se;
        if(u==p) continue;
        if(dfs2(u,s,t)){ path.pb(w); return 1; }
    }
    return 0;
}

void dfs(int s, int p){
    vis[s]=CC;
    for(auto x : adj[s]){
        int u = x.fi, w = x.se;
        if(u==p) continue;
        dis[u] = dis[s]+w;
        dfs(u,s);
    }
}

void calcDiam(int s){
    int a, b, mx = 0;
    dis[s]=0; dfs(s,-1);
    for(int i = 1; i <= n; i++)
        if(vis[i]==CC and mx<=dis[i]) mx=dis[i],a=i;
    dis[a]=0; mx = 0; dfs(a,-1);
    for(int i = 1; i <= n; i++)
        if(vis[i]==CC and mx<=dis[i]) mx=dis[i],b=i;
    path.clear(); dfs2(a,-1,b);
    int dis1 = accumulate(all(path),0), dis2 = 0;
    int ans = dis1, diam=dis1;
    for(auto u : path){
        dis1-=u, dis2+=u;
        ans = min(ans, max(dis1,dis2));
    }
    v.pb({ans,diam});
}

int travelTime(int N, int M, int L, int a[], int b[], int c[]) {
    n = N; m = M; l = L;
    for(int i = 0; i < m; i++){
        a[i]++, b[i]++;
        adj[a[i]].pb({b[i],c[i]});
        adj[b[i]].pb({a[i],c[i]});
    }
    for(int i = 1; i <= n; i++)
        if(!vis[i]) calcDiam(i),CC++;
    int ans = INF, ans2=0;
    sort(all(v));
    for(int i = 0; i < sz(v); i++)
        ans2 = max(ans2, v[i].se);
    if(sz(v)==1) return ans2;
    if(sz(v)>=2) ans = v[sz(v)-1].fi+l+v[sz(v)-2].fi;
    if(sz(v)>=3) ans = max(ans,v[sz(v)-2].fi+l+v[sz(v)-3].fi);
    return max(ans, ans2);
}

Compilation message

dreaming.cpp: In function 'void calcDiam(int)':
dreaming.cpp:46:23: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized]
   46 |     path.clear(); dfs2(a,-1,b);
      |                   ~~~~^~~~~~~~
dreaming.cpp:46:23: warning: 'a' may be used uninitialized in this function [-Wmaybe-uninitialized]

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 49 ms 15040 KB Output is correct
2 Correct 53 ms 14964 KB Output is correct
3 Correct 31 ms 10664 KB Output is correct
4 Correct 7 ms 4436 KB Output is correct
5 Correct 9 ms 3540 KB Output is correct
6 Correct 16 ms 5340 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 26 ms 6680 KB Output is correct
9 Correct 31 ms 8664 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 48 ms 10264 KB Output is correct
12 Correct 71 ms 12780 KB Output is correct
13 Correct 2 ms 2772 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2680 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 1 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2608 KB Output is correct
17 Correct 1 ms 2644 KB Output is correct
18 Correct 1 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 2 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct

Subtask #3
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 49 ms 15040 KB Output is correct
2 Correct 53 ms 14964 KB Output is correct
3 Correct 31 ms 10664 KB Output is correct
4 Correct 7 ms 4436 KB Output is correct
5 Correct 9 ms 3540 KB Output is correct
6 Correct 16 ms 5340 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 26 ms 6680 KB Output is correct
9 Correct 31 ms 8664 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 48 ms 10264 KB Output is correct
12 Correct 71 ms 12780 KB Output is correct
13 Correct 2 ms 2772 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2680 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 1 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 1 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2608 KB Output is correct
30 Correct 1 ms 2644 KB Output is correct
31 Correct 1 ms 2644 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 2 ms 2644 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 2 ms 2644 KB Output is correct
37 Correct 2 ms 2644 KB Output is correct
38 Correct 2 ms 2644 KB Output is correct
39 Correct 51 ms 15064 KB Output is correct
40 Correct 45 ms 15028 KB Output is correct
41 Correct 33 ms 10772 KB Output is correct
42 Correct 7 ms 4436 KB Output is correct
43 Correct 2 ms 2644 KB Output is correct
44 Correct 2 ms 2644 KB Output is correct
45 Correct 2 ms 2644 KB Output is correct
46 Correct 1 ms 2644 KB Output is correct
47 Correct 1 ms 2644 KB Output is correct
48 Correct 2 ms 2644 KB Output is correct
49 Correct 1 ms 2644 KB Output is correct
50 Correct 2 ms 2644 KB Output is correct
51 Correct 1 ms 2644 KB Output is correct
52 Correct 2 ms 2644 KB Output is correct
53 Correct 2 ms 2644 KB Output is correct
54 Correct 2 ms 2644 KB Output is correct
55 Correct 1 ms 2644 KB Output is correct
56 Correct 2 ms 2644 KB Output is correct
57 Correct 62 ms 8484 KB Output is correct
58 Correct 57 ms 8588 KB Output is correct
59 Correct 77 ms 8496 KB Output is correct
60 Correct 72 ms 8448 KB Output is correct
61 Correct 78 ms 8320 KB Output is correct
62 Correct 74 ms 8332 KB Output is correct
63 Correct 64 ms 8188 KB Output is correct
64 Correct 57 ms 8260 KB Output is correct
65 Correct 55 ms 8248 KB Output is correct
66 Correct 56 ms 8272 KB Output is correct
67 Correct 63 ms 8504 KB Output is correct
68 Correct 54 ms 8524 KB Output is correct
69 Correct 57 ms 8472 KB Output is correct
70 Correct 73 ms 8524 KB Output is correct
71 Correct 1 ms 2644 KB Output is correct
72 Correct 3 ms 2772 KB Output is correct
73 Correct 3 ms 2772 KB Output is correct
74 Correct 3 ms 2772 KB Output is correct
75 Correct 4 ms 2772 KB Output is correct
76 Correct 3 ms 2772 KB Output is correct
77 Correct 3 ms 2772 KB Output is correct
78 Correct 3 ms 2772 KB Output is correct
79 Correct 3 ms 2772 KB Output is correct
80 Correct 70 ms 8512 KB Output is correct
81 Correct 57 ms 8508 KB Output is correct
82 Correct 52 ms 8412 KB Output is correct
83 Correct 62 ms 8452 KB Output is correct
84 Correct 3 ms 2772 KB Output is correct
85 Correct 2 ms 2772 KB Output is correct
86 Correct 2 ms 2772 KB Output is correct
87 Correct 2 ms 2772 KB Output is correct
88 Correct 3 ms 2772 KB Output is correct
89 Correct 2 ms 2772 KB Output is correct
90 Correct 3 ms 2728 KB Output is correct
91 Correct 3 ms 2772 KB Output is correct
92 Correct 3 ms 2772 KB Output is correct
93 Correct 3 ms 2772 KB Output is correct
94 Correct 2 ms 2644 KB Output is correct
95 Correct 2 ms 2644 KB Output is correct
96 Correct 2 ms 2644 KB Output is correct
97 Correct 2 ms 2644 KB Output is correct
98 Correct 2 ms 2644 KB Output is correct
99 Correct 2 ms 2644 KB Output is correct
100 Correct 2 ms 2644 KB Output is correct
101 Correct 2 ms 2644 KB Output is correct
102 Correct 2 ms 2644 KB Output is correct
103 Correct 2 ms 2644 KB Output is correct
104 Correct 7 ms 3540 KB Output is correct
105 Correct 12 ms 5436 KB Output is correct
106 Correct 2 ms 2644 KB Output is correct
107 Correct 22 ms 6704 KB Output is correct
108 Correct 29 ms 8636 KB Output is correct
109 Correct 2 ms 2644 KB Output is correct
110 Correct 49 ms 10300 KB Output is correct
111 Correct 61 ms 12728 KB Output is correct
112 Correct 2 ms 2772 KB Output is correct
113 Correct 102 ms 16144 KB Output is correct

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1084 ms 6080 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2680 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 1 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2608 KB Output is correct
17 Correct 1 ms 2644 KB Output is correct
18 Correct 1 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 2 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 3 ms 2772 KB Output is correct
28 Correct 4 ms 2772 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 2 ms 2772 KB Output is correct
31 Correct 3 ms 2772 KB Output is correct
32 Incorrect 2 ms 2644 KB Output isn't correct
33 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 49 ms 15040 KB Output is correct
2 Correct 53 ms 14964 KB Output is correct
3 Correct 31 ms 10664 KB Output is correct
4 Correct 7 ms 4436 KB Output is correct
5 Correct 9 ms 3540 KB Output is correct
6 Correct 16 ms 5340 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 26 ms 6680 KB Output is correct
9 Correct 31 ms 8664 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 48 ms 10264 KB Output is correct
12 Correct 71 ms 12780 KB Output is correct
13 Correct 2 ms 2772 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2680 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 1 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 1 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2608 KB Output is correct
30 Correct 1 ms 2644 KB Output is correct
31 Correct 1 ms 2644 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 2 ms 2644 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 2 ms 2644 KB Output is correct
37 Correct 2 ms 2644 KB Output is correct
38 Correct 2 ms 2644 KB Output is correct
39 Correct 51 ms 15064 KB Output is correct
40 Correct 45 ms 15028 KB Output is correct
41 Correct 33 ms 10772 KB Output is correct
42 Correct 7 ms 4436 KB Output is correct
43 Correct 2 ms 2644 KB Output is correct
44 Correct 2 ms 2644 KB Output is correct
45 Correct 2 ms 2644 KB Output is correct
46 Correct 1 ms 2644 KB Output is correct
47 Correct 1 ms 2644 KB Output is correct
48 Correct 2 ms 2644 KB Output is correct
49 Correct 1 ms 2644 KB Output is correct
50 Correct 2 ms 2644 KB Output is correct
51 Correct 1 ms 2644 KB Output is correct
52 Correct 2 ms 2644 KB Output is correct
53 Correct 2 ms 2644 KB Output is correct
54 Correct 2 ms 2644 KB Output is correct
55 Correct 1 ms 2644 KB Output is correct
56 Correct 2 ms 2644 KB Output is correct
57 Correct 62 ms 8484 KB Output is correct
58 Correct 57 ms 8588 KB Output is correct
59 Correct 77 ms 8496 KB Output is correct
60 Correct 72 ms 8448 KB Output is correct
61 Correct 78 ms 8320 KB Output is correct
62 Correct 74 ms 8332 KB Output is correct
63 Correct 64 ms 8188 KB Output is correct
64 Correct 57 ms 8260 KB Output is correct
65 Correct 55 ms 8248 KB Output is correct
66 Correct 56 ms 8272 KB Output is correct
67 Correct 63 ms 8504 KB Output is correct
68 Correct 54 ms 8524 KB Output is correct
69 Correct 57 ms 8472 KB Output is correct
70 Correct 73 ms 8524 KB Output is correct
71 Correct 1 ms 2644 KB Output is correct
72 Correct 3 ms 2772 KB Output is correct
73 Correct 3 ms 2772 KB Output is correct
74 Correct 3 ms 2772 KB Output is correct
75 Correct 4 ms 2772 KB Output is correct
76 Correct 3 ms 2772 KB Output is correct
77 Correct 3 ms 2772 KB Output is correct
78 Correct 3 ms 2772 KB Output is correct
79 Correct 3 ms 2772 KB Output is correct
80 Correct 70 ms 8512 KB Output is correct
81 Correct 57 ms 8508 KB Output is correct
82 Correct 52 ms 8412 KB Output is correct
83 Correct 62 ms 8452 KB Output is correct
84 Correct 3 ms 2772 KB Output is correct
85 Correct 2 ms 2772 KB Output is correct
86 Correct 2 ms 2772 KB Output is correct
87 Correct 2 ms 2772 KB Output is correct
88 Correct 3 ms 2772 KB Output is correct
89 Correct 2 ms 2772 KB Output is correct
90 Correct 3 ms 2728 KB Output is correct
91 Correct 3 ms 2772 KB Output is correct
92 Correct 3 ms 2772 KB Output is correct
93 Correct 3 ms 2772 KB Output is correct
94 Correct 2 ms 2644 KB Output is correct
95 Correct 2 ms 2644 KB Output is correct
96 Correct 2 ms 2644 KB Output is correct
97 Correct 2 ms 2644 KB Output is correct
98 Correct 2 ms 2644 KB Output is correct
99 Correct 2 ms 2644 KB Output is correct
100 Correct 2 ms 2644 KB Output is correct
101 Correct 2 ms 2644 KB Output is correct
102 Correct 2 ms 2644 KB Output is correct
103 Correct 2 ms 2644 KB Output is correct
104 Correct 7 ms 3540 KB Output is correct
105 Correct 12 ms 5436 KB Output is correct
106 Correct 2 ms 2644 KB Output is correct
107 Correct 22 ms 6704 KB Output is correct
108 Correct 29 ms 8636 KB Output is correct
109 Correct 2 ms 2644 KB Output is correct
110 Correct 49 ms 10300 KB Output is correct
111 Correct 61 ms 12728 KB Output is correct
112 Correct 2 ms 2772 KB Output is correct
113 Correct 102 ms 16144 KB Output is correct
114 Execution timed out 1084 ms 6080 KB Time limit exceeded
115 Halted 0 ms 0 KB -