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답안 #97570

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
97570 2019-02-17T08:21:23 Z georgerapeanu 꿈 (IOI13_dreaming) C++11
54 / 100
 76 ms 15172 KB 
#include "dreaming.h"
#include <vector>
#include <algorithm>
#include <cstdio>

using namespace std;

const int NMAX = 1e5;

pair<int,int> link[NMAX + 5];

vector< pair<int,int> > graph[NMAX + 5];

bool viz[NMAX + 5];

struct data_t{
    int best_dist;
    int node;
};


data_t dfs(int nod,int tata){
    viz[nod] = true;
    data_t ans;
    ans.node = nod;
    ans.best_dist = 0;

    link[nod] = {-1,-1};

    for(auto it:graph[nod]){
        if(it.first == tata){
            continue;
        }
        data_t tmp = dfs(it.first,nod);
        if(ans.best_dist <= tmp.best_dist + it.second){
            ans.best_dist = tmp.best_dist + it.second;
            ans.node = tmp.node;
            link[nod] = it;
        }
    }

    return ans;
}


int travelTime(int N, int M, int L, int A[], int B[], int T[]) {
    int ans = 0;

    for(int i = 0;i < M;i++){
        graph[A[i]].push_back({B[i],T[i]});
        graph[B[i]].push_back({A[i],T[i]});
    }

    vector<int> d;

    for(int i = 0;i < N;i++){
        if(viz[i]){
            continue;
        }

        data_t tmp = dfs(i,0);
        data_t aux = dfs(tmp.node,0);

        vector<int> diam;
        int len = 0;
        diam.push_back(0);
        for(int node = tmp.node;link[node].first != -1;node = link[node].first){
            diam.push_back(link[node].second);
            len += diam.back();
        }

        ans = max(ans,len);

        int best = 1 << 30;
        int pref = 0;

        for(int i = 0;i < (int)diam.size();i++){
            pref += diam[i];
            best = min(best,max(pref,len - pref));
        }
        
        d.push_back(best);
    }

    sort(d.begin(),d.end());

    for(int i = 0;i < (int)d.size() - 1;i++){
        ans = max(ans,d[i] + d.back() + L);
        d.back() = max(d.back(),d[i] + L);
    }

    return ans;
}

Compilation message

dreaming.cpp: In function 'int travelTime(int, int, int, int*, int*, int*)':
dreaming.cpp:62:16: warning: variable 'aux' set but not used [-Wunused-but-set-variable]
         data_t aux = dfs(tmp.node,0);
                ^~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 71 ms 15172 KB Output is correct
2 Correct 63 ms 15096 KB Output is correct
3 Correct 38 ms 10872 KB Output is correct
4 Correct 11 ms 4480 KB Output is correct
5 Correct 10 ms 3584 KB Output is correct
6 Correct 17 ms 5504 KB Output is correct
7 Correct 4 ms 2688 KB Output is correct
8 Correct 29 ms 6904 KB Output is correct
9 Correct 36 ms 8824 KB Output is correct
10 Correct 4 ms 2688 KB Output is correct
11 Correct 51 ms 10460 KB Output is correct
12 Correct 63 ms 12916 KB Output is correct
13 Correct 4 ms 2816 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 71 ms 15172 KB Output is correct
2 Correct 63 ms 15096 KB Output is correct
3 Correct 38 ms 10872 KB Output is correct
4 Correct 11 ms 4480 KB Output is correct
5 Correct 10 ms 3584 KB Output is correct
6 Correct 17 ms 5504 KB Output is correct
7 Correct 4 ms 2688 KB Output is correct
8 Correct 29 ms 6904 KB Output is correct
9 Correct 36 ms 8824 KB Output is correct
10 Correct 4 ms 2688 KB Output is correct
11 Correct 51 ms 10460 KB Output is correct
12 Correct 63 ms 12916 KB Output is correct
13 Correct 4 ms 2816 KB Output is correct
14 Correct 3 ms 2688 KB Output is correct
15 Correct 4 ms 2688 KB Output is correct
16 Correct 4 ms 2688 KB Output is correct
17 Correct 4 ms 2688 KB Output is correct
18 Correct 4 ms 2688 KB Output is correct
19 Correct 4 ms 2688 KB Output is correct
20 Correct 4 ms 2688 KB Output is correct
21 Correct 4 ms 2688 KB Output is correct
22 Correct 6 ms 2688 KB Output is correct
23 Correct 4 ms 2688 KB Output is correct
24 Correct 4 ms 2688 KB Output is correct
25 Correct 3 ms 2688 KB Output is correct
26 Correct 3 ms 2688 KB Output is correct
27 Correct 4 ms 2688 KB Output is correct
28 Correct 4 ms 2688 KB Output is correct
29 Correct 4 ms 2688 KB Output is correct
30 Correct 4 ms 2688 KB Output is correct
31 Correct 4 ms 2688 KB Output is correct
32 Correct 3 ms 2688 KB Output is correct
33 Correct 4 ms 2688 KB Output is correct
34 Correct 4 ms 2688 KB Output is correct
35 Correct 3 ms 2688 KB Output is correct
36 Correct 3 ms 2688 KB Output is correct
37 Correct 3 ms 2688 KB Output is correct
38 Correct 3 ms 2688 KB Output is correct

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 71 ms 15172 KB Output is correct
2 Correct 63 ms 15096 KB Output is correct
3 Correct 38 ms 10872 KB Output is correct
4 Correct 11 ms 4480 KB Output is correct
5 Correct 10 ms 3584 KB Output is correct
6 Correct 17 ms 5504 KB Output is correct
7 Correct 4 ms 2688 KB Output is correct
8 Correct 29 ms 6904 KB Output is correct
9 Correct 36 ms 8824 KB Output is correct
10 Correct 4 ms 2688 KB Output is correct
11 Correct 51 ms 10460 KB Output is correct
12 Correct 63 ms 12916 KB Output is correct
13 Correct 4 ms 2816 KB Output is correct
14 Correct 3 ms 2688 KB Output is correct
15 Correct 4 ms 2688 KB Output is correct
16 Correct 4 ms 2688 KB Output is correct
17 Correct 4 ms 2688 KB Output is correct
18 Correct 4 ms 2688 KB Output is correct
19 Correct 4 ms 2688 KB Output is correct
20 Correct 4 ms 2688 KB Output is correct
21 Correct 4 ms 2688 KB Output is correct
22 Correct 6 ms 2688 KB Output is correct
23 Correct 4 ms 2688 KB Output is correct
24 Correct 4 ms 2688 KB Output is correct
25 Correct 3 ms 2688 KB Output is correct
26 Correct 3 ms 2688 KB Output is correct
27 Correct 4 ms 2688 KB Output is correct
28 Correct 4 ms 2688 KB Output is correct
29 Correct 4 ms 2688 KB Output is correct
30 Correct 4 ms 2688 KB Output is correct
31 Correct 4 ms 2688 KB Output is correct
32 Correct 3 ms 2688 KB Output is correct
33 Correct 4 ms 2688 KB Output is correct
34 Correct 4 ms 2688 KB Output is correct
35 Correct 3 ms 2688 KB Output is correct
36 Correct 3 ms 2688 KB Output is correct
37 Correct 3 ms 2688 KB Output is correct
38 Correct 3 ms 2688 KB Output is correct
39 Correct 61 ms 15156 KB Output is correct
40 Correct 71 ms 15084 KB Output is correct
41 Correct 50 ms 10872 KB Output is correct
42 Correct 12 ms 4480 KB Output is correct
43 Correct 4 ms 2688 KB Output is correct
44 Correct 4 ms 2688 KB Output is correct
45 Correct 3 ms 2688 KB Output is correct
46 Correct 4 ms 2688 KB Output is correct
47 Correct 4 ms 2688 KB Output is correct
48 Correct 3 ms 2688 KB Output is correct
49 Correct 4 ms 2688 KB Output is correct
50 Correct 4 ms 2688 KB Output is correct
51 Correct 3 ms 2688 KB Output is correct
52 Correct 3 ms 2688 KB Output is correct
53 Correct 3 ms 2688 KB Output is correct
54 Correct 4 ms 2688 KB Output is correct
55 Correct 3 ms 2688 KB Output is correct
56 Correct 4 ms 2688 KB Output is correct
57 Correct 74 ms 8696 KB Output is correct
58 Correct 74 ms 8612 KB Output is correct
59 Correct 68 ms 8696 KB Output is correct
60 Correct 76 ms 8696 KB Output is correct
61 Correct 67 ms 8568 KB Output is correct
62 Correct 71 ms 8568 KB Output is correct
63 Correct 61 ms 8440 KB Output is correct
64 Incorrect 66 ms 8464 KB Output isn't correct
65 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 36 ms 6316 KB Output is correct
2 Correct 35 ms 6264 KB Output is correct
3 Correct 34 ms 6136 KB Output is correct
4 Correct 39 ms 6136 KB Output is correct
5 Correct 41 ms 6136 KB Output is correct
6 Correct 39 ms 6716 KB Output is correct
7 Correct 34 ms 6304 KB Output is correct
8 Correct 35 ms 6124 KB Output is correct
9 Correct 33 ms 6140 KB Output is correct
10 Correct 33 ms 6272 KB Output is correct
11 Correct 3 ms 2688 KB Output is correct
12 Correct 11 ms 4220 KB Output is correct
13 Correct 11 ms 4220 KB Output is correct
14 Correct 11 ms 4220 KB Output is correct
15 Correct 11 ms 4220 KB Output is correct
16 Correct 11 ms 4296 KB Output is correct
17 Correct 11 ms 4088 KB Output is correct
18 Correct 11 ms 4220 KB Output is correct
19 Correct 11 ms 4092 KB Output is correct
20 Correct 3 ms 2688 KB Output is correct
21 Correct 3 ms 2688 KB Output is correct
22 Correct 4 ms 2688 KB Output is correct
23 Correct 11 ms 4220 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 71 ms 15172 KB Output is correct
2 Correct 63 ms 15096 KB Output is correct
3 Correct 38 ms 10872 KB Output is correct
4 Correct 11 ms 4480 KB Output is correct
5 Correct 10 ms 3584 KB Output is correct
6 Correct 17 ms 5504 KB Output is correct
7 Correct 4 ms 2688 KB Output is correct
8 Correct 29 ms 6904 KB Output is correct
9 Correct 36 ms 8824 KB Output is correct
10 Correct 4 ms 2688 KB Output is correct
11 Correct 51 ms 10460 KB Output is correct
12 Correct 63 ms 12916 KB Output is correct
13 Correct 4 ms 2816 KB Output is correct
14 Correct 4 ms 2688 KB Output is correct
15 Correct 4 ms 2816 KB Output is correct
16 Correct 4 ms 2816 KB Output is correct
17 Correct 4 ms 2688 KB Output is correct
18 Correct 5 ms 2816 KB Output is correct
19 Correct 5 ms 2816 KB Output is correct
20 Correct 4 ms 2688 KB Output is correct
21 Correct 4 ms 2816 KB Output is correct
22 Correct 4 ms 2816 KB Output is correct
23 Correct 4 ms 2688 KB Output is correct
24 Correct 3 ms 2688 KB Output is correct
25 Correct 3 ms 2688 KB Output is correct
26 Correct 4 ms 2688 KB Output is correct
27 Correct 3 ms 2688 KB Output is correct
28 Correct 4 ms 2688 KB Output is correct
29 Correct 4 ms 2688 KB Output is correct
30 Correct 3 ms 2688 KB Output is correct
31 Correct 4 ms 2688 KB Output is correct
32 Correct 4 ms 2816 KB Output is correct
33 Correct 4 ms 2688 KB Output is correct
34 Correct 4 ms 2688 KB Output is correct
35 Correct 4 ms 2688 KB Output is correct
36 Correct 3 ms 2688 KB Output is correct
37 Correct 4 ms 2688 KB Output is correct
38 Correct 4 ms 2688 KB Output is correct
39 Correct 4 ms 2688 KB Output is correct
40 Correct 3 ms 2688 KB Output is correct
41 Correct 4 ms 2688 KB Output is correct
42 Correct 6 ms 3156 KB Output is correct
43 Correct 5 ms 3040 KB Output is correct
44 Correct 5 ms 2816 KB Output is correct
45 Correct 4 ms 2688 KB Output is correct
46 Correct 5 ms 2816 KB Output is correct
47 Correct 5 ms 2816 KB Output is correct
48 Correct 5 ms 2816 KB Output is correct
49 Correct 4 ms 2816 KB Output is correct
50 Correct 5 ms 2816 KB Output is correct
51 Correct 5 ms 2816 KB Output is correct
52 Correct 4 ms 2688 KB Output is correct
53 Correct 4 ms 2816 KB Output is correct
54 Correct 5 ms 2816 KB Output is correct
55 Correct 6 ms 2816 KB Output is correct
56 Correct 5 ms 2816 KB Output is correct
57 Correct 4 ms 2816 KB Output is correct
58 Correct 4 ms 2816 KB Output is correct
59 Correct 4 ms 2816 KB Output is correct
60 Correct 5 ms 2816 KB Output is correct
61 Correct 5 ms 2816 KB Output is correct
62 Correct 5 ms 2816 KB Output is correct
63 Correct 5 ms 2816 KB Output is correct
64 Correct 6 ms 2816 KB Output is correct
65 Correct 5 ms 2816 KB Output is correct
66 Correct 4 ms 2816 KB Output is correct
67 Correct 4 ms 2816 KB Output is correct
68 Correct 4 ms 2688 KB Output is correct
69 Correct 4 ms 2816 KB Output is correct
70 Correct 5 ms 2816 KB Output is correct
71 Correct 5 ms 2816 KB Output is correct
72 Correct 4 ms 2816 KB Output is correct
73 Correct 3 ms 2816 KB Output is correct
74 Correct 4 ms 2816 KB Output is correct
75 Correct 5 ms 2816 KB Output is correct
76 Correct 4 ms 2816 KB Output is correct
77 Correct 5 ms 2816 KB Output is correct
78 Correct 4 ms 2816 KB Output is correct
79 Correct 4 ms 2816 KB Output is correct
80 Correct 5 ms 2816 KB Output is correct
81 Correct 4 ms 2816 KB Output is correct
82 Correct 5 ms 2816 KB Output is correct
83 Correct 4 ms 2816 KB Output is correct
84 Correct 5 ms 2816 KB Output is correct
85 Correct 5 ms 2816 KB Output is correct
86 Correct 5 ms 2816 KB Output is correct
87 Correct 5 ms 2816 KB Output is correct
88 Correct 5 ms 2816 KB Output is correct
89 Correct 5 ms 2816 KB Output is correct
90 Correct 4 ms 2688 KB Output is correct
91 Correct 3 ms 2688 KB Output is correct
92 Correct 4 ms 2688 KB Output is correct
93 Correct 4 ms 2688 KB Output is correct
94 Correct 4 ms 2688 KB Output is correct
95 Correct 4 ms 2688 KB Output is correct
96 Correct 4 ms 2688 KB Output is correct
97 Correct 4 ms 2816 KB Output is correct
98 Correct 4 ms 2688 KB Output is correct
99 Correct 3 ms 2688 KB Output is correct
100 Correct 4 ms 2688 KB Output is correct
101 Correct 5 ms 2688 KB Output is correct
102 Correct 4 ms 2816 KB Output is correct

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 71 ms 15172 KB Output is correct
2 Correct 63 ms 15096 KB Output is correct
3 Correct 38 ms 10872 KB Output is correct
4 Correct 11 ms 4480 KB Output is correct
5 Correct 10 ms 3584 KB Output is correct
6 Correct 17 ms 5504 KB Output is correct
7 Correct 4 ms 2688 KB Output is correct
8 Correct 29 ms 6904 KB Output is correct
9 Correct 36 ms 8824 KB Output is correct
10 Correct 4 ms 2688 KB Output is correct
11 Correct 51 ms 10460 KB Output is correct
12 Correct 63 ms 12916 KB Output is correct
13 Correct 4 ms 2816 KB Output is correct
14 Correct 3 ms 2688 KB Output is correct
15 Correct 4 ms 2688 KB Output is correct
16 Correct 4 ms 2688 KB Output is correct
17 Correct 4 ms 2688 KB Output is correct
18 Correct 4 ms 2688 KB Output is correct
19 Correct 4 ms 2688 KB Output is correct
20 Correct 4 ms 2688 KB Output is correct
21 Correct 4 ms 2688 KB Output is correct
22 Correct 6 ms 2688 KB Output is correct
23 Correct 4 ms 2688 KB Output is correct
24 Correct 4 ms 2688 KB Output is correct
25 Correct 3 ms 2688 KB Output is correct
26 Correct 3 ms 2688 KB Output is correct
27 Correct 4 ms 2688 KB Output is correct
28 Correct 4 ms 2688 KB Output is correct
29 Correct 4 ms 2688 KB Output is correct
30 Correct 4 ms 2688 KB Output is correct
31 Correct 4 ms 2688 KB Output is correct
32 Correct 3 ms 2688 KB Output is correct
33 Correct 4 ms 2688 KB Output is correct
34 Correct 4 ms 2688 KB Output is correct
35 Correct 3 ms 2688 KB Output is correct
36 Correct 3 ms 2688 KB Output is correct
37 Correct 3 ms 2688 KB Output is correct
38 Correct 3 ms 2688 KB Output is correct
39 Correct 61 ms 15156 KB Output is correct
40 Correct 71 ms 15084 KB Output is correct
41 Correct 50 ms 10872 KB Output is correct
42 Correct 12 ms 4480 KB Output is correct
43 Correct 4 ms 2688 KB Output is correct
44 Correct 4 ms 2688 KB Output is correct
45 Correct 3 ms 2688 KB Output is correct
46 Correct 4 ms 2688 KB Output is correct
47 Correct 4 ms 2688 KB Output is correct
48 Correct 3 ms 2688 KB Output is correct
49 Correct 4 ms 2688 KB Output is correct
50 Correct 4 ms 2688 KB Output is correct
51 Correct 3 ms 2688 KB Output is correct
52 Correct 3 ms 2688 KB Output is correct
53 Correct 3 ms 2688 KB Output is correct
54 Correct 4 ms 2688 KB Output is correct
55 Correct 3 ms 2688 KB Output is correct
56 Correct 4 ms 2688 KB Output is correct
57 Correct 74 ms 8696 KB Output is correct
58 Correct 74 ms 8612 KB Output is correct
59 Correct 68 ms 8696 KB Output is correct
60 Correct 76 ms 8696 KB Output is correct
61 Correct 67 ms 8568 KB Output is correct
62 Correct 71 ms 8568 KB Output is correct
63 Correct 61 ms 8440 KB Output is correct
64 Incorrect 66 ms 8464 KB Output isn't correct
65 Halted 0 ms 0 KB -