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Submission #707562

# Submission time Handle Problem Language Result Execution time Memory
707562 2023-03-09T09:43:21 Z Dan4Life Collecting Stamps 3 (JOI20_ho_t3) C++17
100 / 100
 109 ms 5596 KB 
#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define mp make_pair
#define int long long
#define sz(a) (int)a.size()
const int mxN = (int)4e2+10;
const int LINF = (int)2e18;
int dp[2][mxN][mxN][2], x[mxN], t[mxN];

int32_t main() {
	ios_base::sync_with_stdio(false); cin.tie(0);
	int n, L; cin >> n >> L; int ans = 0;
	for(int i = 1; i <= n; i++) cin >> x[i], x[n+i+1]=x[i];
	for(int i = 1; i <= n; i++) cin >> t[i], t[n+i+1]=t[i];
	for(int i = 0; i < 2; i++)
		for(int j = 0; j < mxN; j++)
			for(int k = 0; k < mxN; k++)
				for(int l = 0; l < 2; l++)
					dp[i][j][k][l] = LINF;
	dp[0][n+1][n+1][0]=dp[0][n+1][n+1][1]=0; t[n+1] = -LINF;
	for(int kk = 0, k=0, lk=1; kk <= n; kk++,k^=1,lk^=1){
		for(int len = 2; len <= n+1; len++){
			for(int l = 1, r=l+len-1; l <= n+1; l++, r++){
				dp[k][l][r][0] = min({ dp[k][l][r][0],
					dp[k][l+1][r][0]+min(abs(x[l+1]-x[l]),L-abs(x[l+1]-x[l])),
					dp[k][l+1][r][1]+min(abs(x[r]-x[l]),L-abs(x[r]-x[l]))
				});
				dp[k][l][r][1] = min({ dp[k][l][r][1],
					dp[k][l][r-1][0]+min(abs(x[l]-x[r]),L-abs(x[l]-x[r])),
					dp[k][l][r-1][1]+min(abs(x[r-1]-x[r]),L-abs(x[r-1]-x[r]))
				});
				if(kk){
					int tm = abs(x[l+1]-x[l]); tm=min(tm,L-tm); tm+=dp[lk][l+1][r][0];
					if(tm<=t[l]) dp[k][l][r][0] = min(dp[k][l][r][0], tm);
					tm = abs(x[r]-x[l]); tm=min(tm,L-tm); tm+=dp[lk][l+1][r][1];
					if(tm<=t[l]) dp[k][l][r][0] = min(dp[k][l][r][0], tm);
					tm = abs(x[l]-x[r]); tm=min(tm,L-tm); tm+=dp[lk][l][r-1][0];
					if(tm<=t[r]) dp[k][l][r][1] = min(dp[k][l][r][1],tm);
					tm = abs(x[r-1]-x[r]); tm=min(tm,L-tm); tm+=dp[lk][l][r-1][1];
					if(tm<=t[r]) dp[k][l][r][1] = min(dp[k][l][r][1],tm);
				}
				if(len==n+1 and (dp[k][l][r][0]<LINF or dp[k][l][r][1]<LINF)) ans = max(ans, kk);
			}
		}
		for(int i = 0; i < mxN; i++)
			for(int j = 0; j < mxN; j++)
				for(int l = 0; l < 2; l++)
					dp[lk][i][j][l]=LINF;
	}

	cout << ans;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5460 KB Output is correct
2 Correct 3 ms 5588 KB Output is correct
3 Correct 4 ms 5460 KB Output is correct
4 Correct 4 ms 5588 KB Output is correct
5 Correct 5 ms 5588 KB Output is correct
6 Correct 4 ms 5460 KB Output is correct
7 Correct 3 ms 5588 KB Output is correct
8 Correct 5 ms 5588 KB Output is correct
9 Correct 5 ms 5460 KB Output is correct
10 Correct 3 ms 5588 KB Output is correct
11 Correct 3 ms 5460 KB Output is correct
12 Correct 4 ms 5460 KB Output is correct
13 Correct 4 ms 5460 KB Output is correct
14 Correct 4 ms 5588 KB Output is correct
15 Correct 4 ms 5588 KB Output is correct
16 Correct 5 ms 5460 KB Output is correct
17 Correct 4 ms 5548 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5460 KB Output is correct
2 Correct 3 ms 5588 KB Output is correct
3 Correct 4 ms 5460 KB Output is correct
4 Correct 4 ms 5588 KB Output is correct
5 Correct 5 ms 5588 KB Output is correct
6 Correct 4 ms 5460 KB Output is correct
7 Correct 3 ms 5588 KB Output is correct
8 Correct 5 ms 5588 KB Output is correct
9 Correct 5 ms 5460 KB Output is correct
10 Correct 3 ms 5588 KB Output is correct
11 Correct 3 ms 5460 KB Output is correct
12 Correct 4 ms 5460 KB Output is correct
13 Correct 4 ms 5460 KB Output is correct
14 Correct 4 ms 5588 KB Output is correct
15 Correct 4 ms 5588 KB Output is correct
16 Correct 5 ms 5460 KB Output is correct
17 Correct 4 ms 5548 KB Output is correct
18 Correct 5 ms 5460 KB Output is correct
19 Correct 4 ms 5460 KB Output is correct
20 Correct 4 ms 5588 KB Output is correct
21 Correct 5 ms 5460 KB Output is correct
22 Correct 4 ms 5460 KB Output is correct
23 Correct 6 ms 5588 KB Output is correct
24 Correct 4 ms 5460 KB Output is correct
25 Correct 5 ms 5588 KB Output is correct
26 Correct 6 ms 5460 KB Output is correct
27 Correct 4 ms 5460 KB Output is correct
28 Correct 4 ms 5540 KB Output is correct
29 Correct 4 ms 5588 KB Output is correct
30 Correct 4 ms 5588 KB Output is correct
31 Correct 5 ms 5588 KB Output is correct
32 Correct 4 ms 5588 KB Output is correct
33 Correct 5 ms 5588 KB Output is correct
34 Correct 5 ms 5588 KB Output is correct
35 Correct 5 ms 5536 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5460 KB Output is correct
2 Correct 3 ms 5588 KB Output is correct
3 Correct 4 ms 5460 KB Output is correct
4 Correct 4 ms 5588 KB Output is correct
5 Correct 5 ms 5588 KB Output is correct
6 Correct 4 ms 5460 KB Output is correct
7 Correct 3 ms 5588 KB Output is correct
8 Correct 5 ms 5588 KB Output is correct
9 Correct 5 ms 5460 KB Output is correct
10 Correct 3 ms 5588 KB Output is correct
11 Correct 3 ms 5460 KB Output is correct
12 Correct 4 ms 5460 KB Output is correct
13 Correct 4 ms 5460 KB Output is correct
14 Correct 4 ms 5588 KB Output is correct
15 Correct 4 ms 5588 KB Output is correct
16 Correct 5 ms 5460 KB Output is correct
17 Correct 4 ms 5548 KB Output is correct
18 Correct 98 ms 5576 KB Output is correct
19 Correct 50 ms 5576 KB Output is correct
20 Correct 31 ms 5588 KB Output is correct
21 Correct 42 ms 5588 KB Output is correct
22 Correct 60 ms 5568 KB Output is correct
23 Correct 21 ms 5588 KB Output is correct
24 Correct 18 ms 5576 KB Output is correct
25 Correct 21 ms 5588 KB Output is correct
26 Correct 11 ms 5588 KB Output is correct
27 Correct 25 ms 5592 KB Output is correct
28 Correct 17 ms 5588 KB Output is correct
29 Correct 23 ms 5588 KB Output is correct
30 Correct 20 ms 5588 KB Output is correct
31 Correct 21 ms 5460 KB Output is correct
32 Correct 14 ms 5588 KB Output is correct
33 Correct 22 ms 5596 KB Output is correct
34 Correct 11 ms 5576 KB Output is correct
35 Correct 20 ms 5588 KB Output is correct
36 Correct 13 ms 5596 KB Output is correct
37 Correct 21 ms 5588 KB Output is correct
38 Correct 14 ms 5592 KB Output is correct
39 Correct 23 ms 5592 KB Output is correct
40 Correct 16 ms 5588 KB Output is correct
41 Correct 102 ms 5568 KB Output is correct
42 Correct 57 ms 5588 KB Output is correct
43 Correct 95 ms 5588 KB Output is correct
44 Correct 62 ms 5588 KB Output is correct
45 Correct 96 ms 5588 KB Output is correct
46 Correct 68 ms 5576 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5460 KB Output is correct
2 Correct 3 ms 5588 KB Output is correct
3 Correct 4 ms 5460 KB Output is correct
4 Correct 4 ms 5588 KB Output is correct
5 Correct 5 ms 5588 KB Output is correct
6 Correct 4 ms 5460 KB Output is correct
7 Correct 3 ms 5588 KB Output is correct
8 Correct 5 ms 5588 KB Output is correct
9 Correct 5 ms 5460 KB Output is correct
10 Correct 3 ms 5588 KB Output is correct
11 Correct 3 ms 5460 KB Output is correct
12 Correct 4 ms 5460 KB Output is correct
13 Correct 4 ms 5460 KB Output is correct
14 Correct 4 ms 5588 KB Output is correct
15 Correct 4 ms 5588 KB Output is correct
16 Correct 5 ms 5460 KB Output is correct
17 Correct 4 ms 5548 KB Output is correct
18 Correct 5 ms 5460 KB Output is correct
19 Correct 4 ms 5460 KB Output is correct
20 Correct 4 ms 5588 KB Output is correct
21 Correct 5 ms 5460 KB Output is correct
22 Correct 4 ms 5460 KB Output is correct
23 Correct 6 ms 5588 KB Output is correct
24 Correct 4 ms 5460 KB Output is correct
25 Correct 5 ms 5588 KB Output is correct
26 Correct 6 ms 5460 KB Output is correct
27 Correct 4 ms 5460 KB Output is correct
28 Correct 4 ms 5540 KB Output is correct
29 Correct 4 ms 5588 KB Output is correct
30 Correct 4 ms 5588 KB Output is correct
31 Correct 5 ms 5588 KB Output is correct
32 Correct 4 ms 5588 KB Output is correct
33 Correct 5 ms 5588 KB Output is correct
34 Correct 5 ms 5588 KB Output is correct
35 Correct 5 ms 5536 KB Output is correct
36 Correct 98 ms 5576 KB Output is correct
37 Correct 50 ms 5576 KB Output is correct
38 Correct 31 ms 5588 KB Output is correct
39 Correct 42 ms 5588 KB Output is correct
40 Correct 60 ms 5568 KB Output is correct
41 Correct 21 ms 5588 KB Output is correct
42 Correct 18 ms 5576 KB Output is correct
43 Correct 21 ms 5588 KB Output is correct
44 Correct 11 ms 5588 KB Output is correct
45 Correct 25 ms 5592 KB Output is correct
46 Correct 17 ms 5588 KB Output is correct
47 Correct 23 ms 5588 KB Output is correct
48 Correct 20 ms 5588 KB Output is correct
49 Correct 21 ms 5460 KB Output is correct
50 Correct 14 ms 5588 KB Output is correct
51 Correct 22 ms 5596 KB Output is correct
52 Correct 11 ms 5576 KB Output is correct
53 Correct 20 ms 5588 KB Output is correct
54 Correct 13 ms 5596 KB Output is correct
55 Correct 21 ms 5588 KB Output is correct
56 Correct 14 ms 5592 KB Output is correct
57 Correct 23 ms 5592 KB Output is correct
58 Correct 16 ms 5588 KB Output is correct
59 Correct 102 ms 5568 KB Output is correct
60 Correct 57 ms 5588 KB Output is correct
61 Correct 95 ms 5588 KB Output is correct
62 Correct 62 ms 5588 KB Output is correct
63 Correct 96 ms 5588 KB Output is correct
64 Correct 68 ms 5576 KB Output is correct
65 Correct 93 ms 5588 KB Output is correct
66 Correct 77 ms 5588 KB Output is correct
67 Correct 83 ms 5588 KB Output is correct
68 Correct 71 ms 5576 KB Output is correct
69 Correct 86 ms 5572 KB Output is correct
70 Correct 82 ms 5588 KB Output is correct
71 Correct 78 ms 5576 KB Output is correct
72 Correct 83 ms 5588 KB Output is correct
73 Correct 71 ms 5588 KB Output is correct
74 Correct 89 ms 5588 KB Output is correct
75 Correct 76 ms 5588 KB Output is correct
76 Correct 103 ms 5572 KB Output is correct
77 Correct 92 ms 5588 KB Output is correct
78 Correct 81 ms 5588 KB Output is correct
79 Correct 72 ms 5588 KB Output is correct
80 Correct 104 ms 5588 KB Output is correct
81 Correct 68 ms 5588 KB Output is correct
82 Correct 73 ms 5568 KB Output is correct
83 Correct 107 ms 5588 KB Output is correct
84 Correct 99 ms 5572 KB Output is correct
85 Correct 95 ms 5588 KB Output is correct
86 Correct 98 ms 5588 KB Output is correct
87 Correct 77 ms 5588 KB Output is correct
88 Correct 109 ms 5588 KB Output is correct
89 Correct 96 ms 5588 KB Output is correct
90 Correct 78 ms 5588 KB Output is correct
91 Correct 108 ms 5588 KB Output is correct
92 Correct 105 ms 5588 KB Output is correct
93 Correct 108 ms 5588 KB Output is correct