답안 #935449

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
935449 2024-02-29T06:03:04 Z weakweakweak Collecting Stamps 3 (JOI20_ho_t3) C++14
100 / 100
68 ms 145556 KB
//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;}
# 결과 실행 시간 메모리 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
# 결과 실행 시간 메모리 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
# 결과 실행 시간 메모리 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
# 결과 실행 시간 메모리 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