oj.uz

Submission #707554

# Submission time Handle Problem Language Result Execution time Memory
707554 2023-03-09T09:10:20 Z Dan4Life Collecting Stamps 3 (JOI20_ho_t3) C++17
15 / 100
 97 ms 145292 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)2e2+10;
const int LINF = (int)2e18;
int dp[mxN][mxN][mxN][2];
int x[mxN], t[mxN];
//dp[pref][suf][]
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 < mxN; 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[n+1][n+1][0][0]=dp[n+1][n+1][0][1]=0;
	//0 1 2 3 4 5 6 
	t[n+1] = -LINF;
	for(int len = 2; len <= n+1; len++){
		for(int l = 1; l <= n+1; l++){
			for(int k = 0; k <= n; k++){
				int r = l+len-1;
				dp[l][r][k][0] = min({ dp[l][r][k][0],
					dp[l+1][r][k][0]+min(abs(x[l+1]-x[l]),L-abs(x[l+1]-x[l])),
					dp[l+1][r][k][1]+min(abs(x[r]-x[l]),L-abs(x[r]-x[l]))
				});
				dp[l][r][k][1] = min({ dp[l][r][k][1],
					dp[l][r-1][k][0]+min(abs(x[l]-x[r]),L-abs(x[l]-x[r])),
					dp[l][r-1][k][1]+min(abs(x[r-1]-x[r]),L-abs(x[r-1]-x[r]))
				});
				if(k){
					int tm = abs(x[l+1]-x[l]); tm=min(tm,L-tm); tm+=dp[l+1][r][k-1][0];
					if(tm<=t[l]) dp[l][r][k][0] = min(dp[l][r][k][0], tm);
					tm = abs(x[r]-x[l]); tm=min(tm,L-tm); tm+=dp[l+1][r][k-1][1];
					if(tm<=t[l]) dp[l][r][k][0] = min(dp[l][r][k][0], tm);
					tm = abs(x[l]-x[r]); tm=min(tm,L-tm); tm+=dp[l][r-1][k-1][0];
					if(tm<=t[r]) dp[l][r][k][1] = min(dp[l][r][k][1],tm);
					tm = abs(x[r-1]-x[r]); tm=min(tm,L-tm); tm+=dp[l][r-1][k-1][1];
					if(tm<=t[r]) dp[l][r][k][1] = min(dp[l][r][k][1],tm);
				}
				if(len==n+1 and (dp[l][r][k][0]<LINF or dp[l][r][k][1]<LINF)) ans = max(ans, k);
			}
		}
	}

	cout << ans;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 145240 KB Output is correct
2 Correct 57 ms 145228 KB Output is correct
3 Correct 56 ms 145224 KB Output is correct
4 Correct 58 ms 145224 KB Output is correct
5 Correct 55 ms 145228 KB Output is correct
6 Correct 57 ms 145164 KB Output is correct
7 Correct 57 ms 145176 KB Output is correct
8 Correct 56 ms 145276 KB Output is correct
9 Correct 58 ms 145228 KB Output is correct
10 Correct 58 ms 145196 KB Output is correct
11 Correct 59 ms 145264 KB Output is correct
12 Correct 59 ms 145292 KB Output is correct
13 Correct 58 ms 145256 KB Output is correct
14 Correct 57 ms 145260 KB Output is correct
15 Correct 57 ms 145264 KB Output is correct
16 Correct 57 ms 145204 KB Output is correct
17 Correct 56 ms 145216 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 145240 KB Output is correct
2 Correct 57 ms 145228 KB Output is correct
3 Correct 56 ms 145224 KB Output is correct
4 Correct 58 ms 145224 KB Output is correct
5 Correct 55 ms 145228 KB Output is correct
6 Correct 57 ms 145164 KB Output is correct
7 Correct 57 ms 145176 KB Output is correct
8 Correct 56 ms 145276 KB Output is correct
9 Correct 58 ms 145228 KB Output is correct
10 Correct 58 ms 145196 KB Output is correct
11 Correct 59 ms 145264 KB Output is correct
12 Correct 59 ms 145292 KB Output is correct
13 Correct 58 ms 145256 KB Output is correct
14 Correct 57 ms 145260 KB Output is correct
15 Correct 57 ms 145264 KB Output is correct
16 Correct 57 ms 145204 KB Output is correct
17 Correct 56 ms 145216 KB Output is correct
18 Correct 60 ms 145260 KB Output is correct
19 Correct 57 ms 145220 KB Output is correct
20 Correct 64 ms 145272 KB Output is correct
21 Correct 56 ms 145232 KB Output is correct
22 Correct 61 ms 145176 KB Output is correct
23 Correct 57 ms 145176 KB Output is correct
24 Correct 56 ms 145220 KB Output is correct
25 Correct 56 ms 145228 KB Output is correct
26 Correct 58 ms 145280 KB Output is correct
27 Correct 57 ms 145224 KB Output is correct
28 Correct 58 ms 145228 KB Output is correct
29 Correct 60 ms 145212 KB Output is correct
30 Correct 56 ms 145232 KB Output is correct
31 Correct 59 ms 145204 KB Output is correct
32 Correct 59 ms 145244 KB Output is correct
33 Correct 58 ms 145292 KB Output is correct
34 Correct 67 ms 145180 KB Output is correct
35 Correct 55 ms 145240 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 145240 KB Output is correct
2 Correct 57 ms 145228 KB Output is correct
3 Correct 56 ms 145224 KB Output is correct
4 Correct 58 ms 145224 KB Output is correct
5 Correct 55 ms 145228 KB Output is correct
6 Correct 57 ms 145164 KB Output is correct
7 Correct 57 ms 145176 KB Output is correct
8 Correct 56 ms 145276 KB Output is correct
9 Correct 58 ms 145228 KB Output is correct
10 Correct 58 ms 145196 KB Output is correct
11 Correct 59 ms 145264 KB Output is correct
12 Correct 59 ms 145292 KB Output is correct
13 Correct 58 ms 145256 KB Output is correct
14 Correct 57 ms 145260 KB Output is correct
15 Correct 57 ms 145264 KB Output is correct
16 Correct 57 ms 145204 KB Output is correct
17 Correct 56 ms 145216 KB Output is correct
18 Incorrect 97 ms 145172 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 145240 KB Output is correct
2 Correct 57 ms 145228 KB Output is correct
3 Correct 56 ms 145224 KB Output is correct
4 Correct 58 ms 145224 KB Output is correct
5 Correct 55 ms 145228 KB Output is correct
6 Correct 57 ms 145164 KB Output is correct
7 Correct 57 ms 145176 KB Output is correct
8 Correct 56 ms 145276 KB Output is correct
9 Correct 58 ms 145228 KB Output is correct
10 Correct 58 ms 145196 KB Output is correct
11 Correct 59 ms 145264 KB Output is correct
12 Correct 59 ms 145292 KB Output is correct
13 Correct 58 ms 145256 KB Output is correct
14 Correct 57 ms 145260 KB Output is correct
15 Correct 57 ms 145264 KB Output is correct
16 Correct 57 ms 145204 KB Output is correct
17 Correct 56 ms 145216 KB Output is correct
18 Correct 60 ms 145260 KB Output is correct
19 Correct 57 ms 145220 KB Output is correct
20 Correct 64 ms 145272 KB Output is correct
21 Correct 56 ms 145232 KB Output is correct
22 Correct 61 ms 145176 KB Output is correct
23 Correct 57 ms 145176 KB Output is correct
24 Correct 56 ms 145220 KB Output is correct
25 Correct 56 ms 145228 KB Output is correct
26 Correct 58 ms 145280 KB Output is correct
27 Correct 57 ms 145224 KB Output is correct
28 Correct 58 ms 145228 KB Output is correct
29 Correct 60 ms 145212 KB Output is correct
30 Correct 56 ms 145232 KB Output is correct
31 Correct 59 ms 145204 KB Output is correct
32 Correct 59 ms 145244 KB Output is correct
33 Correct 58 ms 145292 KB Output is correct
34 Correct 67 ms 145180 KB Output is correct
35 Correct 55 ms 145240 KB Output is correct
36 Incorrect 97 ms 145172 KB Output isn't correct
37 Halted 0 ms 0 KB -