답안 #153811

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
153811	2019-09-16T14:21:13 Z	popovicirobert	꿈 (IOI13_dreaming)	C++14	47 / 100	171 ms	16372 KB

dreaming

#include "dreaming.h"
#include <bits/stdc++.h>

using namespace std;

const int INF = 2e9;
const int MAXN = (int) 1e5;

static vector < pair <int, int> > g[MAXN + 1];
static int dstA[MAXN + 1], dstB[MAXN + 1];
static bool vis[MAXN + 1], on_way[MAXN + 1];
static vector <int> nodes;

void dfs(int nod, int par, int *dst) {
    if(vis[nod] == 0) {
        nodes.push_back(nod);
    }
    vis[nod] = 1;
    for(auto it : g[nod]) {
        if(it.first != par) {
            dst[it.first] = dst[nod] + it.second;
            dfs(it.first, nod, dst);
        }
    }
}

int travelTime(int n, int m, int l, int A[], int B[], int T[]) {
    int i;
    for(i = 0; i < m; i++) {
        A[i]++, B[i]++;
        g[A[i]].push_back({B[i], T[i]});
        g[B[i]].push_back({A[i], T[i]});
    }

    int nod = 0, dst = 0, ans = 0;
    for(i = 1; i <= n; i++) {
        if(vis[i]) continue;

        nodes.clear();
        dfs(i, 0, dstA);
        int a = 0;
        for(auto it : nodes) {
            if(dstA[it] >= dstA[a]) {
                a = it;
            }
        }
        dstA[a] = 0;
        dfs(a, 0, dstA);

        int b = 0;
        for(auto it : nodes) {
            if(dstA[it] >= dstA[b]) {
                b = it;
            }
        }
        dfs(b, 0, dstB);

        int cur_nod, cur_dst = INF;
        int id;

        for(auto it : nodes) {
            if(cur_dst >= max(dstA[it], dstB[it])) {
                cur_dst = max(dstA[it], dstB[it]);
                if(cur_dst == dstA[it]) {
                    id = a;
                }
                else {
                    id = b;
                }
                cur_nod = it;
            }
        }

        int aux = cur_nod;
        while(aux != id) {
            on_way[aux] = 1;
            for(auto it : g[aux]) {
                if(id == a) {
                    if(dstA[it.first] + it.second == dstA[aux]) {
                        aux = it.first;
                        break;
                    }
                }
                else {
                    if(dstB[it.first] + it.second == dstB[aux]) {
                        aux = it.first;
                        break;
                    }
                }
            }
        }
        on_way[id] = 1;

        if(ans <= dstA[b] && (i == 1 || dstA[b] >= l + dst + cur_dst)) {
            ans = dstA[b];
            nod = cur_nod;
            dst = cur_dst;
        }
        else if(ans <= l + dst + cur_dst) {
            ans = l + dst + cur_dst;
            cur_dst = dst + l;
            dst = max(dst, ans - dst);

            while(dst > max(cur_dst, ans - cur_dst)) {
                nod = cur_nod;
                dst = max(cur_dst, ans - cur_dst);
                for(auto it : g[nod]) {
                    if(on_way[it.first]) {
                        cur_nod = it.first;
                        cur_dst += it.second;
                        break;
                    }
                }
            }
        }

        /*cerr << ans << " " << dst << " " << nod << "\n";
        for(auto it : nodes) {
            cerr << it << " " << on_way[it] << "\n";
        }
        cerr << "\n";*/

    }
    return ans;
}

Compilation message

dreaming.cpp: In function 'int travelTime(int, int, int, int*, int*, int*)':
dreaming.cpp:78:17: warning: 'id' may be used uninitialized in this function [-Wmaybe-uninitialized]
                 if(id == a) {
                 ^~
dreaming.cpp:92:20: warning: 'cur_nod' may be used uninitialized in this function [-Wmaybe-uninitialized]
         on_way[id] = 1;
         ~~~~~~~~~~~^~~

Subtask #1
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	79 ms	13684 KB	Output is correct
2	Correct	87 ms	13684 KB	Output is correct
3	Correct	51 ms	9972 KB	Output is correct
4	Correct	13 ms	4344 KB	Output is correct
5	Correct	12 ms	3576 KB	Output is correct
6	Correct	21 ms	5240 KB	Output is correct
7	Correct	5 ms	2808 KB	Output is correct
8	Correct	37 ms	6520 KB	Output is correct
9	Correct	49 ms	8156 KB	Output is correct
10	Correct	4 ms	2808 KB	Output is correct
11	Correct	71 ms	9668 KB	Output is correct
12	Correct	96 ms	11632 KB	Output is correct
13	Correct	5 ms	2808 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	79 ms	13684 KB	Output is correct
2	Correct	87 ms	13684 KB	Output is correct
3	Correct	51 ms	9972 KB	Output is correct
4	Correct	13 ms	4344 KB	Output is correct
5	Correct	12 ms	3576 KB	Output is correct
6	Correct	21 ms	5240 KB	Output is correct
7	Correct	5 ms	2808 KB	Output is correct
8	Correct	37 ms	6520 KB	Output is correct
9	Correct	49 ms	8156 KB	Output is correct
10	Correct	4 ms	2808 KB	Output is correct
11	Correct	71 ms	9668 KB	Output is correct
12	Correct	96 ms	11632 KB	Output is correct
13	Correct	5 ms	2808 KB	Output is correct
14	Correct	4 ms	2684 KB	Output is correct
15	Correct	4 ms	2680 KB	Output is correct
16	Correct	4 ms	2680 KB	Output is correct
17	Correct	4 ms	2680 KB	Output is correct
18	Correct	4 ms	2680 KB	Output is correct
19	Correct	4 ms	2680 KB	Output is correct
20	Correct	4 ms	2680 KB	Output is correct
21	Correct	4 ms	2680 KB	Output is correct
22	Correct	4 ms	2680 KB	Output is correct
23	Correct	4 ms	2680 KB	Output is correct
24	Correct	4 ms	2680 KB	Output is correct
25	Correct	4 ms	2680 KB	Output is correct
26	Correct	4 ms	2680 KB	Output is correct
27	Correct	4 ms	2680 KB	Output is correct
28	Correct	4 ms	2680 KB	Output is correct
29	Correct	5 ms	2680 KB	Output is correct
30	Correct	4 ms	2680 KB	Output is correct
31	Correct	4 ms	2808 KB	Output is correct
32	Correct	4 ms	2684 KB	Output is correct
33	Correct	4 ms	2680 KB	Output is correct
34	Correct	4 ms	2680 KB	Output is correct
35	Correct	4 ms	2680 KB	Output is correct
36	Correct	5 ms	2680 KB	Output is correct
37	Correct	8 ms	2680 KB	Output is correct
38	Correct	4 ms	2680 KB	Output is correct

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	79 ms	13684 KB	Output is correct
2	Correct	87 ms	13684 KB	Output is correct
3	Correct	51 ms	9972 KB	Output is correct
4	Correct	13 ms	4344 KB	Output is correct
5	Correct	12 ms	3576 KB	Output is correct
6	Correct	21 ms	5240 KB	Output is correct
7	Correct	5 ms	2808 KB	Output is correct
8	Correct	37 ms	6520 KB	Output is correct
9	Correct	49 ms	8156 KB	Output is correct
10	Correct	4 ms	2808 KB	Output is correct
11	Correct	71 ms	9668 KB	Output is correct
12	Correct	96 ms	11632 KB	Output is correct
13	Correct	5 ms	2808 KB	Output is correct
14	Correct	4 ms	2684 KB	Output is correct
15	Correct	4 ms	2680 KB	Output is correct
16	Correct	4 ms	2680 KB	Output is correct
17	Correct	4 ms	2680 KB	Output is correct
18	Correct	4 ms	2680 KB	Output is correct
19	Correct	4 ms	2680 KB	Output is correct
20	Correct	4 ms	2680 KB	Output is correct
21	Correct	4 ms	2680 KB	Output is correct
22	Correct	4 ms	2680 KB	Output is correct
23	Correct	4 ms	2680 KB	Output is correct
24	Correct	4 ms	2680 KB	Output is correct
25	Correct	4 ms	2680 KB	Output is correct
26	Correct	4 ms	2680 KB	Output is correct
27	Correct	4 ms	2680 KB	Output is correct
28	Correct	4 ms	2680 KB	Output is correct
29	Correct	5 ms	2680 KB	Output is correct
30	Correct	4 ms	2680 KB	Output is correct
31	Correct	4 ms	2808 KB	Output is correct
32	Correct	4 ms	2684 KB	Output is correct
33	Correct	4 ms	2680 KB	Output is correct
34	Correct	4 ms	2680 KB	Output is correct
35	Correct	4 ms	2680 KB	Output is correct
36	Correct	5 ms	2680 KB	Output is correct
37	Correct	8 ms	2680 KB	Output is correct
38	Correct	4 ms	2680 KB	Output is correct
39	Correct	96 ms	14912 KB	Output is correct
40	Correct	80 ms	15064 KB	Output is correct
41	Correct	49 ms	10968 KB	Output is correct
42	Correct	13 ms	4600 KB	Output is correct
43	Correct	4 ms	2680 KB	Output is correct
44	Correct	4 ms	2728 KB	Output is correct
45	Correct	4 ms	2680 KB	Output is correct
46	Correct	4 ms	2680 KB	Output is correct
47	Correct	4 ms	2680 KB	Output is correct
48	Correct	5 ms	2680 KB	Output is correct
49	Correct	4 ms	2680 KB	Output is correct
50	Correct	4 ms	2680 KB	Output is correct
51	Correct	4 ms	2684 KB	Output is correct
52	Correct	5 ms	2680 KB	Output is correct
53	Correct	4 ms	2680 KB	Output is correct
54	Correct	4 ms	2680 KB	Output is correct
55	Correct	5 ms	2680 KB	Output is correct
56	Correct	4 ms	2680 KB	Output is correct
57	Correct	155 ms	10768 KB	Output is correct
58	Correct	171 ms	10484 KB	Output is correct
59	Correct	156 ms	10596 KB	Output is correct
60	Correct	111 ms	10404 KB	Output is correct
61	Correct	100 ms	10628 KB	Output is correct
62	Correct	105 ms	10596 KB	Output is correct
63	Correct	103 ms	10296 KB	Output is correct
64	Correct	114 ms	10240 KB	Output is correct
65	Correct	98 ms	10608 KB	Output is correct
66	Correct	93 ms	10612 KB	Output is correct
67	Correct	111 ms	10476 KB	Output is correct
68	Correct	114 ms	10476 KB	Output is correct
69	Correct	121 ms	10880 KB	Output is correct
70	Correct	111 ms	10740 KB	Output is correct
71	Correct	4 ms	2680 KB	Output is correct
72	Correct	6 ms	2936 KB	Output is correct
73	Correct	7 ms	2936 KB	Output is correct
74	Correct	6 ms	2936 KB	Output is correct
75	Correct	6 ms	2936 KB	Output is correct
76	Correct	6 ms	2936 KB	Output is correct
77	Correct	6 ms	2936 KB	Output is correct
78	Correct	5 ms	2908 KB	Output is correct
79	Correct	7 ms	2936 KB	Output is correct
80	Correct	129 ms	10728 KB	Output is correct
81	Correct	122 ms	10512 KB	Output is correct
82	Correct	108 ms	10760 KB	Output is correct
83	Correct	114 ms	10736 KB	Output is correct
84	Correct	6 ms	2936 KB	Output is correct
85	Correct	6 ms	2812 KB	Output is correct
86	Correct	6 ms	2808 KB	Output is correct
87	Correct	6 ms	2936 KB	Output is correct
88	Correct	6 ms	2936 KB	Output is correct
89	Correct	7 ms	2936 KB	Output is correct
90	Correct	7 ms	2936 KB	Output is correct
91	Correct	6 ms	2936 KB	Output is correct
92	Correct	6 ms	2936 KB	Output is correct
93	Correct	6 ms	2936 KB	Output is correct
94	Correct	4 ms	2752 KB	Output is correct
95	Correct	3 ms	2680 KB	Output is correct
96	Correct	4 ms	2680 KB	Output is correct
97	Correct	4 ms	2680 KB	Output is correct
98	Correct	4 ms	2680 KB	Output is correct
99	Correct	5 ms	2680 KB	Output is correct
100	Correct	5 ms	2680 KB	Output is correct
101	Correct	5 ms	2684 KB	Output is correct
102	Correct	6 ms	2680 KB	Output is correct
103	Correct	5 ms	2680 KB	Output is correct
104	Correct	13 ms	3576 KB	Output is correct
105	Correct	23 ms	5508 KB	Output is correct
106	Correct	4 ms	2808 KB	Output is correct
107	Correct	37 ms	7032 KB	Output is correct
108	Correct	51 ms	8952 KB	Output is correct
109	Correct	5 ms	2808 KB	Output is correct
110	Correct	77 ms	10872 KB	Output is correct
111	Correct	111 ms	12756 KB	Output is correct
112	Correct	5 ms	2808 KB	Output is correct
113	Correct	152 ms	16372 KB	Output is correct

Subtask #4
0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	33 ms	6392 KB	Output is correct
2	Incorrect	36 ms	6440 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #5
0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	79 ms	13684 KB	Output is correct
2	Correct	87 ms	13684 KB	Output is correct
3	Correct	51 ms	9972 KB	Output is correct
4	Correct	13 ms	4344 KB	Output is correct
5	Correct	12 ms	3576 KB	Output is correct
6	Correct	21 ms	5240 KB	Output is correct
7	Correct	5 ms	2808 KB	Output is correct
8	Correct	37 ms	6520 KB	Output is correct
9	Correct	49 ms	8156 KB	Output is correct
10	Correct	4 ms	2808 KB	Output is correct
11	Correct	71 ms	9668 KB	Output is correct
12	Correct	96 ms	11632 KB	Output is correct
13	Correct	5 ms	2808 KB	Output is correct
14	Correct	5 ms	2808 KB	Output is correct
15	Correct	5 ms	2808 KB	Output is correct
16	Correct	6 ms	2936 KB	Output is correct
17	Correct	5 ms	2808 KB	Output is correct
18	Correct	5 ms	2812 KB	Output is correct
19	Correct	6 ms	2940 KB	Output is correct
20	Correct	5 ms	2808 KB	Output is correct
21	Incorrect	6 ms	2808 KB	Output isn't correct
22	Halted	0 ms	0 KB	-

Subtask #6
0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	79 ms	13684 KB	Output is correct
2	Correct	87 ms	13684 KB	Output is correct
3	Correct	51 ms	9972 KB	Output is correct
4	Correct	13 ms	4344 KB	Output is correct
5	Correct	12 ms	3576 KB	Output is correct
6	Correct	21 ms	5240 KB	Output is correct
7	Correct	5 ms	2808 KB	Output is correct
8	Correct	37 ms	6520 KB	Output is correct
9	Correct	49 ms	8156 KB	Output is correct
10	Correct	4 ms	2808 KB	Output is correct
11	Correct	71 ms	9668 KB	Output is correct
12	Correct	96 ms	11632 KB	Output is correct
13	Correct	5 ms	2808 KB	Output is correct
14	Correct	4 ms	2684 KB	Output is correct
15	Correct	4 ms	2680 KB	Output is correct
16	Correct	4 ms	2680 KB	Output is correct
17	Correct	4 ms	2680 KB	Output is correct
18	Correct	4 ms	2680 KB	Output is correct
19	Correct	4 ms	2680 KB	Output is correct
20	Correct	4 ms	2680 KB	Output is correct
21	Correct	4 ms	2680 KB	Output is correct
22	Correct	4 ms	2680 KB	Output is correct
23	Correct	4 ms	2680 KB	Output is correct
24	Correct	4 ms	2680 KB	Output is correct
25	Correct	4 ms	2680 KB	Output is correct
26	Correct	4 ms	2680 KB	Output is correct
27	Correct	4 ms	2680 KB	Output is correct
28	Correct	4 ms	2680 KB	Output is correct
29	Correct	5 ms	2680 KB	Output is correct
30	Correct	4 ms	2680 KB	Output is correct
31	Correct	4 ms	2808 KB	Output is correct
32	Correct	4 ms	2684 KB	Output is correct
33	Correct	4 ms	2680 KB	Output is correct
34	Correct	4 ms	2680 KB	Output is correct
35	Correct	4 ms	2680 KB	Output is correct
36	Correct	5 ms	2680 KB	Output is correct
37	Correct	8 ms	2680 KB	Output is correct
38	Correct	4 ms	2680 KB	Output is correct
39	Correct	96 ms	14912 KB	Output is correct
40	Correct	80 ms	15064 KB	Output is correct
41	Correct	49 ms	10968 KB	Output is correct
42	Correct	13 ms	4600 KB	Output is correct
43	Correct	4 ms	2680 KB	Output is correct
44	Correct	4 ms	2728 KB	Output is correct
45	Correct	4 ms	2680 KB	Output is correct
46	Correct	4 ms	2680 KB	Output is correct
47	Correct	4 ms	2680 KB	Output is correct
48	Correct	5 ms	2680 KB	Output is correct
49	Correct	4 ms	2680 KB	Output is correct
50	Correct	4 ms	2680 KB	Output is correct
51	Correct	4 ms	2684 KB	Output is correct
52	Correct	5 ms	2680 KB	Output is correct
53	Correct	4 ms	2680 KB	Output is correct
54	Correct	4 ms	2680 KB	Output is correct
55	Correct	5 ms	2680 KB	Output is correct
56	Correct	4 ms	2680 KB	Output is correct
57	Correct	155 ms	10768 KB	Output is correct
58	Correct	171 ms	10484 KB	Output is correct
59	Correct	156 ms	10596 KB	Output is correct
60	Correct	111 ms	10404 KB	Output is correct
61	Correct	100 ms	10628 KB	Output is correct
62	Correct	105 ms	10596 KB	Output is correct
63	Correct	103 ms	10296 KB	Output is correct
64	Correct	114 ms	10240 KB	Output is correct
65	Correct	98 ms	10608 KB	Output is correct
66	Correct	93 ms	10612 KB	Output is correct
67	Correct	111 ms	10476 KB	Output is correct
68	Correct	114 ms	10476 KB	Output is correct
69	Correct	121 ms	10880 KB	Output is correct
70	Correct	111 ms	10740 KB	Output is correct
71	Correct	4 ms	2680 KB	Output is correct
72	Correct	6 ms	2936 KB	Output is correct
73	Correct	7 ms	2936 KB	Output is correct
74	Correct	6 ms	2936 KB	Output is correct
75	Correct	6 ms	2936 KB	Output is correct
76	Correct	6 ms	2936 KB	Output is correct
77	Correct	6 ms	2936 KB	Output is correct
78	Correct	5 ms	2908 KB	Output is correct
79	Correct	7 ms	2936 KB	Output is correct
80	Correct	129 ms	10728 KB	Output is correct
81	Correct	122 ms	10512 KB	Output is correct
82	Correct	108 ms	10760 KB	Output is correct
83	Correct	114 ms	10736 KB	Output is correct
84	Correct	6 ms	2936 KB	Output is correct
85	Correct	6 ms	2812 KB	Output is correct
86	Correct	6 ms	2808 KB	Output is correct
87	Correct	6 ms	2936 KB	Output is correct
88	Correct	6 ms	2936 KB	Output is correct
89	Correct	7 ms	2936 KB	Output is correct
90	Correct	7 ms	2936 KB	Output is correct
91	Correct	6 ms	2936 KB	Output is correct
92	Correct	6 ms	2936 KB	Output is correct
93	Correct	6 ms	2936 KB	Output is correct
94	Correct	4 ms	2752 KB	Output is correct
95	Correct	3 ms	2680 KB	Output is correct
96	Correct	4 ms	2680 KB	Output is correct
97	Correct	4 ms	2680 KB	Output is correct
98	Correct	4 ms	2680 KB	Output is correct
99	Correct	5 ms	2680 KB	Output is correct
100	Correct	5 ms	2680 KB	Output is correct
101	Correct	5 ms	2684 KB	Output is correct
102	Correct	6 ms	2680 KB	Output is correct
103	Correct	5 ms	2680 KB	Output is correct
104	Correct	13 ms	3576 KB	Output is correct
105	Correct	23 ms	5508 KB	Output is correct
106	Correct	4 ms	2808 KB	Output is correct
107	Correct	37 ms	7032 KB	Output is correct
108	Correct	51 ms	8952 KB	Output is correct
109	Correct	5 ms	2808 KB	Output is correct
110	Correct	77 ms	10872 KB	Output is correct
111	Correct	111 ms	12756 KB	Output is correct
112	Correct	5 ms	2808 KB	Output is correct
113	Correct	152 ms	16372 KB	Output is correct
114	Correct	33 ms	6392 KB	Output is correct
115	Incorrect	36 ms	6440 KB	Output isn't correct
116	Halted	0 ms	0 KB	-

답안 #153811

Compilation message

Subtask #1 14.0 / 14.0

Subtask #2 10.0 / 10.0

Subtask #3 23.0 / 23.0

Subtask #4 0 / 18.0

Subtask #5 0 / 12.0

Subtask #6 0 / 23.0

Subtask #1
14.0 / 14.0

Subtask #2
10.0 / 10.0

Subtask #3
23.0 / 23.0

Subtask #4
0 / 18.0

Subtask #5
0 / 12.0

Subtask #6
0 / 23.0