Submission #935449

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
935449	2024-02-29T06:03:04 Z	weakweakweak	Collecting Stamps 3 (JOI20_ho_t3)	C++14	100 / 100	68 ms	145556 KB

ho_t3

//自己想到的，好開心(對照過提解了，確定是對的)
#include <bits/stdc++.h>
using namespace std;

#define ll long long

int n, l, a[210], t[210]; 
ll inf = 1e13;
ll dp[210][210][210][2]; //dp[l][r][k][w]代表逆時針走過l，順時針走過r，共拿過k個郵票，現在在哪個端點(w=0是左)，所需的最短時間

int walk (int st, int ed) {
    if (st == ed) return 0;
    if (st > ed) swap(st, ed);
    return min((a[st] + l - a[ed]), a[ed] - a[st]);
}

signed main () {
    ios_base::sync_with_stdio(false); cin.tie(0);
    memset(dp, 63, sizeof(dp));
    dp[0][0][0][0] = dp[0][0][0][1] = 0;
    cin >> n >> l;
    for (int i = 1; i <= n; i++) cin >> a[i];
    for (int i = 1; i <= n; i++) cin >> t[i];
    a[0] = 0, a[n + 1] = l, t[0] = t[n + 1] = -1;

    int ans = 0;
    for (int l = 0; l <= n; l++) {
        for (int r = 0; r <= n and l + r <= n; r++) {
            for (int k = 0; k <= n; k++) {
                if (min(dp[l][r][k][1], dp[l][r][k][0]) < inf) {
                    // if (k > ans) cout << l << ' ' << r << ' ' << k << ' ' << dp[l][r][k][0] << ' ' << dp[l][r][k][1] << '\n'; 
                    ans = max(ans, k);
                }
                //逆時針
                if (l + 1 <= n){
                    ll tt = dp[l][r][k][0] + walk(n + 1 - l, n + 1 - (l + 1));
                    tt = min(tt,  dp[l][r][k][1] + walk(r, n + 1 - (l + 1))  );
                    if (tt <= t[n + 1 - (l + 1)]) dp[l + 1][r][k + 1][0] = min(dp[l + 1][r][k + 1][0], tt);
                    else dp[l + 1][r][k][0] = min(dp[l + 1][r][k][0], tt);
                }
                //順時針
                if (r + 1 <= n){
                    ll tt = dp[l][r][k][0] + walk(n + 1 - l, r + 1);
                    tt = min(tt,  dp[l][r][k][1] + walk(r, r + 1)  );
                    if (tt <= t[r + 1]) dp[l][r + 1][k + 1][1] = min(dp[l][r + 1][k + 1][1], tt);
                    else dp[l][r + 1][k][1] = min(dp[l][r + 1][k][1], tt);
                }
            }
        }
    }

cout << ans << '\n';
return 0;}

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	41 ms	145492 KB	Output is correct
2	Correct	29 ms	145236 KB	Output is correct
3	Correct	32 ms	145340 KB	Output is correct
4	Correct	29 ms	145312 KB	Output is correct
5	Correct	29 ms	145328 KB	Output is correct
6	Correct	29 ms	145244 KB	Output is correct
7	Correct	29 ms	145236 KB	Output is correct
8	Correct	29 ms	145236 KB	Output is correct
9	Correct	29 ms	145232 KB	Output is correct
10	Correct	28 ms	145236 KB	Output is correct
11	Correct	30 ms	145492 KB	Output is correct
12	Correct	29 ms	145216 KB	Output is correct
13	Correct	28 ms	145244 KB	Output is correct
14	Correct	30 ms	145244 KB	Output is correct
15	Correct	29 ms	145244 KB	Output is correct
16	Correct	28 ms	145232 KB	Output is correct
17	Correct	30 ms	145340 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	41 ms	145492 KB	Output is correct
2	Correct	29 ms	145236 KB	Output is correct
3	Correct	32 ms	145340 KB	Output is correct
4	Correct	29 ms	145312 KB	Output is correct
5	Correct	29 ms	145328 KB	Output is correct
6	Correct	29 ms	145244 KB	Output is correct
7	Correct	29 ms	145236 KB	Output is correct
8	Correct	29 ms	145236 KB	Output is correct
9	Correct	29 ms	145232 KB	Output is correct
10	Correct	28 ms	145236 KB	Output is correct
11	Correct	30 ms	145492 KB	Output is correct
12	Correct	29 ms	145216 KB	Output is correct
13	Correct	28 ms	145244 KB	Output is correct
14	Correct	30 ms	145244 KB	Output is correct
15	Correct	29 ms	145244 KB	Output is correct
16	Correct	28 ms	145232 KB	Output is correct
17	Correct	30 ms	145340 KB	Output is correct
18	Correct	30 ms	145232 KB	Output is correct
19	Correct	28 ms	145240 KB	Output is correct
20	Correct	30 ms	145496 KB	Output is correct
21	Correct	29 ms	145408 KB	Output is correct
22	Correct	29 ms	145236 KB	Output is correct
23	Correct	29 ms	145240 KB	Output is correct
24	Correct	29 ms	145232 KB	Output is correct
25	Correct	28 ms	145244 KB	Output is correct
26	Correct	30 ms	145228 KB	Output is correct
27	Correct	28 ms	145244 KB	Output is correct
28	Correct	29 ms	145236 KB	Output is correct
29	Correct	29 ms	145240 KB	Output is correct
30	Correct	29 ms	145244 KB	Output is correct
31	Correct	30 ms	145244 KB	Output is correct
32	Correct	30 ms	145244 KB	Output is correct
33	Correct	29 ms	145232 KB	Output is correct
34	Correct	28 ms	145232 KB	Output is correct
35	Correct	28 ms	145240 KB	Output is correct

Subtask #3
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	41 ms	145492 KB	Output is correct
2	Correct	29 ms	145236 KB	Output is correct
3	Correct	32 ms	145340 KB	Output is correct
4	Correct	29 ms	145312 KB	Output is correct
5	Correct	29 ms	145328 KB	Output is correct
6	Correct	29 ms	145244 KB	Output is correct
7	Correct	29 ms	145236 KB	Output is correct
8	Correct	29 ms	145236 KB	Output is correct
9	Correct	29 ms	145232 KB	Output is correct
10	Correct	28 ms	145236 KB	Output is correct
11	Correct	30 ms	145492 KB	Output is correct
12	Correct	29 ms	145216 KB	Output is correct
13	Correct	28 ms	145244 KB	Output is correct
14	Correct	30 ms	145244 KB	Output is correct
15	Correct	29 ms	145244 KB	Output is correct
16	Correct	28 ms	145232 KB	Output is correct
17	Correct	30 ms	145340 KB	Output is correct
18	Correct	55 ms	145232 KB	Output is correct
19	Correct	45 ms	145284 KB	Output is correct
20	Correct	36 ms	145236 KB	Output is correct
21	Correct	45 ms	145244 KB	Output is correct
22	Correct	49 ms	145236 KB	Output is correct
23	Correct	37 ms	145496 KB	Output is correct
24	Correct	35 ms	145232 KB	Output is correct
25	Correct	34 ms	145200 KB	Output is correct
26	Correct	32 ms	145288 KB	Output is correct
27	Correct	36 ms	145244 KB	Output is correct
28	Correct	32 ms	145244 KB	Output is correct
29	Correct	34 ms	145232 KB	Output is correct
30	Correct	33 ms	145240 KB	Output is correct
31	Correct	37 ms	145236 KB	Output is correct
32	Correct	31 ms	145416 KB	Output is correct
33	Correct	35 ms	145244 KB	Output is correct
34	Correct	30 ms	145232 KB	Output is correct
35	Correct	34 ms	145236 KB	Output is correct
36	Correct	30 ms	145236 KB	Output is correct
37	Correct	34 ms	145488 KB	Output is correct
38	Correct	32 ms	145236 KB	Output is correct
39	Correct	36 ms	145236 KB	Output is correct
40	Correct	33 ms	145400 KB	Output is correct
41	Correct	62 ms	145236 KB	Output is correct
42	Correct	52 ms	145236 KB	Output is correct
43	Correct	65 ms	145244 KB	Output is correct
44	Correct	50 ms	145240 KB	Output is correct
45	Correct	64 ms	145236 KB	Output is correct
46	Correct	49 ms	145416 KB	Output is correct

Subtask #4
75.0 / 75.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	41 ms	145492 KB	Output is correct
2	Correct	29 ms	145236 KB	Output is correct
3	Correct	32 ms	145340 KB	Output is correct
4	Correct	29 ms	145312 KB	Output is correct
5	Correct	29 ms	145328 KB	Output is correct
6	Correct	29 ms	145244 KB	Output is correct
7	Correct	29 ms	145236 KB	Output is correct
8	Correct	29 ms	145236 KB	Output is correct
9	Correct	29 ms	145232 KB	Output is correct
10	Correct	28 ms	145236 KB	Output is correct
11	Correct	30 ms	145492 KB	Output is correct
12	Correct	29 ms	145216 KB	Output is correct
13	Correct	28 ms	145244 KB	Output is correct
14	Correct	30 ms	145244 KB	Output is correct
15	Correct	29 ms	145244 KB	Output is correct
16	Correct	28 ms	145232 KB	Output is correct
17	Correct	30 ms	145340 KB	Output is correct
18	Correct	30 ms	145232 KB	Output is correct
19	Correct	28 ms	145240 KB	Output is correct
20	Correct	30 ms	145496 KB	Output is correct
21	Correct	29 ms	145408 KB	Output is correct
22	Correct	29 ms	145236 KB	Output is correct
23	Correct	29 ms	145240 KB	Output is correct
24	Correct	29 ms	145232 KB	Output is correct
25	Correct	28 ms	145244 KB	Output is correct
26	Correct	30 ms	145228 KB	Output is correct
27	Correct	28 ms	145244 KB	Output is correct
28	Correct	29 ms	145236 KB	Output is correct
29	Correct	29 ms	145240 KB	Output is correct
30	Correct	29 ms	145244 KB	Output is correct
31	Correct	30 ms	145244 KB	Output is correct
32	Correct	30 ms	145244 KB	Output is correct
33	Correct	29 ms	145232 KB	Output is correct
34	Correct	28 ms	145232 KB	Output is correct
35	Correct	28 ms	145240 KB	Output is correct
36	Correct	55 ms	145232 KB	Output is correct
37	Correct	45 ms	145284 KB	Output is correct
38	Correct	36 ms	145236 KB	Output is correct
39	Correct	45 ms	145244 KB	Output is correct
40	Correct	49 ms	145236 KB	Output is correct
41	Correct	37 ms	145496 KB	Output is correct
42	Correct	35 ms	145232 KB	Output is correct
43	Correct	34 ms	145200 KB	Output is correct
44	Correct	32 ms	145288 KB	Output is correct
45	Correct	36 ms	145244 KB	Output is correct
46	Correct	32 ms	145244 KB	Output is correct
47	Correct	34 ms	145232 KB	Output is correct
48	Correct	33 ms	145240 KB	Output is correct
49	Correct	37 ms	145236 KB	Output is correct
50	Correct	31 ms	145416 KB	Output is correct
51	Correct	35 ms	145244 KB	Output is correct
52	Correct	30 ms	145232 KB	Output is correct
53	Correct	34 ms	145236 KB	Output is correct
54	Correct	30 ms	145236 KB	Output is correct
55	Correct	34 ms	145488 KB	Output is correct
56	Correct	32 ms	145236 KB	Output is correct
57	Correct	36 ms	145236 KB	Output is correct
58	Correct	33 ms	145400 KB	Output is correct
59	Correct	62 ms	145236 KB	Output is correct
60	Correct	52 ms	145236 KB	Output is correct
61	Correct	65 ms	145244 KB	Output is correct
62	Correct	50 ms	145240 KB	Output is correct
63	Correct	64 ms	145236 KB	Output is correct
64	Correct	49 ms	145416 KB	Output is correct
65	Correct	59 ms	145420 KB	Output is correct
66	Correct	58 ms	145424 KB	Output is correct
67	Correct	53 ms	145236 KB	Output is correct
68	Correct	53 ms	145336 KB	Output is correct
69	Correct	61 ms	145236 KB	Output is correct
70	Correct	57 ms	145424 KB	Output is correct
71	Correct	60 ms	145236 KB	Output is correct
72	Correct	57 ms	145232 KB	Output is correct
73	Correct	58 ms	145556 KB	Output is correct
74	Correct	52 ms	145396 KB	Output is correct
75	Correct	59 ms	145428 KB	Output is correct
76	Correct	61 ms	145232 KB	Output is correct
77	Correct	64 ms	145232 KB	Output is correct
78	Correct	60 ms	145312 KB	Output is correct
79	Correct	55 ms	145244 KB	Output is correct
80	Correct	62 ms	145420 KB	Output is correct
81	Correct	56 ms	145240 KB	Output is correct
82	Correct	58 ms	145356 KB	Output is correct
83	Correct	65 ms	145416 KB	Output is correct
84	Correct	59 ms	145236 KB	Output is correct
85	Correct	59 ms	145244 KB	Output is correct
86	Correct	60 ms	145232 KB	Output is correct
87	Correct	58 ms	145424 KB	Output is correct
88	Correct	64 ms	145232 KB	Output is correct
89	Correct	64 ms	145432 KB	Output is correct
90	Correct	59 ms	145244 KB	Output is correct
91	Correct	68 ms	145424 KB	Output is correct
92	Correct	65 ms	145428 KB	Output is correct
93	Correct	66 ms	145240 KB	Output is correct

Submission #935449

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 10.0 / 10.0

Subtask #4 75.0 / 75.0

Subtask #1
5.0 / 5.0

Subtask #2
10.0 / 10.0

Subtask #3
10.0 / 10.0

Subtask #4
75.0 / 75.0