oj.uz

Submission #203338

# Submission time Handle Problem Language Result Execution time Memory
203338 2020-02-20T09:07:38 Z staniewzki Collecting Stamps 3 (JOI20_ho_t3) C++17
100 / 100
 641 ms 448888 KB 
#include<bits/stdc++.h>
using namespace std;
 
#define REP(i, n) for(int i = 0; i < n; i++)

template<class T> auto create(T x) { return x; }
template<class... Ts> auto create(int n, Ts... x) {
	return vector(n, create(x...));
}

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	int n, len;
	cin >> n >> len;
	vector<int> x(n), t(n);
	REP(i, n) cin >> x[i];
	REP(i, n) cin >> t[i];

	auto dp = create(n + 1, n + 1, n + 1, 2, (long long) 1e9 + 1);

	vector<int> d(n + 2);
	REP(i, n) d[i + 1] = x[i];
	d[n + 1] = len;

	auto left = [&](int a, int b) { return d[b] - d[a]; };
	auto right = [&](int a, int b) { return d[n + 1 - a] - d[n + 1 - b]; };

	dp[0][0][0][0] = 0;
	dp[0][0][0][1] = 0;
	int ans = 0;

	REP(l, n + 1) REP(r, n + 1) {
		if(l + r > n) break;
		REP(k, n + 1) {
			if(l) {
				dp[l][r][k][0] = min(dp[l][r][k][0], dp[l - 1][r][k][0] + left(l - 1, l));
				dp[l][r][k][0] = min(dp[l][r][k][0], dp[l - 1][r][k][1] + left(0, l) + right(0, r));
			}
			if(r) {
				dp[l][r][k][1] = min(dp[l][r][k][1], dp[l][r - 1][k][1] + right(r - 1, r));
				dp[l][r][k][1] = min(dp[l][r][k][1], dp[l][r - 1][k][0] + left(0, l) + right(0, r));
			}
		}

		for(int k = n; k >= 1; k--) {
			if(l && dp[l][r][k - 1][0] <= t[l - 1]) {
				dp[l][r][k][0] = dp[l][r][k - 1][0];
				ans = max(ans, k);
			}
			if(r && dp[l][r][k - 1][1] <= t[n - r]) {
				dp[l][r][k][1] = dp[l][r][k - 1][1];
				ans = max(ans, k);
			}
		}
	}

	cout << ans << "\n";
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 504 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 408 KB Output is correct
9 Correct 6 ms 632 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 504 KB Output is correct
13 Correct 5 ms 504 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 504 KB Output is correct
17 Correct 5 ms 508 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 504 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 408 KB Output is correct
9 Correct 6 ms 632 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 504 KB Output is correct
13 Correct 5 ms 504 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 504 KB Output is correct
17 Correct 5 ms 508 KB Output is correct
18 Correct 5 ms 504 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 7 ms 504 KB Output is correct
21 Correct 5 ms 504 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 6 ms 504 KB Output is correct
24 Correct 5 ms 504 KB Output is correct
25 Correct 5 ms 504 KB Output is correct
26 Correct 5 ms 504 KB Output is correct
27 Correct 5 ms 376 KB Output is correct
28 Correct 5 ms 376 KB Output is correct
29 Correct 5 ms 504 KB Output is correct
30 Correct 5 ms 504 KB Output is correct
31 Correct 5 ms 504 KB Output is correct
32 Correct 5 ms 504 KB Output is correct
33 Correct 5 ms 504 KB Output is correct
34 Correct 5 ms 504 KB Output is correct
35 Correct 5 ms 504 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 504 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 408 KB Output is correct
9 Correct 6 ms 632 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 504 KB Output is correct
13 Correct 5 ms 504 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 504 KB Output is correct
17 Correct 5 ms 508 KB Output is correct
18 Correct 458 ms 323108 KB Output is correct
19 Correct 223 ms 152592 KB Output is correct
20 Correct 90 ms 59512 KB Output is correct
21 Correct 202 ms 140024 KB Output is correct
22 Correct 297 ms 206560 KB Output is correct
23 Correct 75 ms 46712 KB Output is correct
24 Correct 51 ms 32248 KB Output is correct
25 Correct 68 ms 45176 KB Output is correct
26 Correct 19 ms 10744 KB Output is correct
27 Correct 72 ms 48124 KB Output is correct
28 Correct 51 ms 29048 KB Output is correct
29 Correct 77 ms 49656 KB Output is correct
30 Correct 54 ms 34552 KB Output is correct
31 Correct 71 ms 45176 KB Output is correct
32 Correct 29 ms 17272 KB Output is correct
33 Correct 71 ms 45304 KB Output is correct
34 Correct 18 ms 9720 KB Output is correct
35 Correct 66 ms 43768 KB Output is correct
36 Correct 25 ms 14328 KB Output is correct
37 Correct 71 ms 48120 KB Output is correct
38 Correct 34 ms 19576 KB Output is correct
39 Correct 77 ms 51192 KB Output is correct
40 Correct 37 ms 23036 KB Output is correct
41 Correct 609 ms 442616 KB Output is correct
42 Correct 339 ms 244600 KB Output is correct
43 Correct 624 ms 442484 KB Output is correct
44 Correct 339 ms 239864 KB Output is correct
45 Correct 641 ms 442488 KB Output is correct
46 Correct 345 ms 244728 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 504 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 408 KB Output is correct
9 Correct 6 ms 632 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 504 KB Output is correct
13 Correct 5 ms 504 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 504 KB Output is correct
17 Correct 5 ms 508 KB Output is correct
18 Correct 5 ms 504 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 7 ms 504 KB Output is correct
21 Correct 5 ms 504 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 6 ms 504 KB Output is correct
24 Correct 5 ms 504 KB Output is correct
25 Correct 5 ms 504 KB Output is correct
26 Correct 5 ms 504 KB Output is correct
27 Correct 5 ms 376 KB Output is correct
28 Correct 5 ms 376 KB Output is correct
29 Correct 5 ms 504 KB Output is correct
30 Correct 5 ms 504 KB Output is correct
31 Correct 5 ms 504 KB Output is correct
32 Correct 5 ms 504 KB Output is correct
33 Correct 5 ms 504 KB Output is correct
34 Correct 5 ms 504 KB Output is correct
35 Correct 5 ms 504 KB Output is correct
36 Correct 458 ms 323108 KB Output is correct
37 Correct 223 ms 152592 KB Output is correct
38 Correct 90 ms 59512 KB Output is correct
39 Correct 202 ms 140024 KB Output is correct
40 Correct 297 ms 206560 KB Output is correct
41 Correct 75 ms 46712 KB Output is correct
42 Correct 51 ms 32248 KB Output is correct
43 Correct 68 ms 45176 KB Output is correct
44 Correct 19 ms 10744 KB Output is correct
45 Correct 72 ms 48124 KB Output is correct
46 Correct 51 ms 29048 KB Output is correct
47 Correct 77 ms 49656 KB Output is correct
48 Correct 54 ms 34552 KB Output is correct
49 Correct 71 ms 45176 KB Output is correct
50 Correct 29 ms 17272 KB Output is correct
51 Correct 71 ms 45304 KB Output is correct
52 Correct 18 ms 9720 KB Output is correct
53 Correct 66 ms 43768 KB Output is correct
54 Correct 25 ms 14328 KB Output is correct
55 Correct 71 ms 48120 KB Output is correct
56 Correct 34 ms 19576 KB Output is correct
57 Correct 77 ms 51192 KB Output is correct
58 Correct 37 ms 23036 KB Output is correct
59 Correct 609 ms 442616 KB Output is correct
60 Correct 339 ms 244600 KB Output is correct
61 Correct 624 ms 442484 KB Output is correct
62 Correct 339 ms 239864 KB Output is correct
63 Correct 641 ms 442488 KB Output is correct
64 Correct 345 ms 244728 KB Output is correct
65 Correct 533 ms 379640 KB Output is correct
66 Correct 469 ms 334072 KB Output is correct
67 Correct 449 ms 312488 KB Output is correct
68 Correct 400 ms 276856 KB Output is correct
69 Correct 542 ms 373368 KB Output is correct
70 Correct 504 ms 350200 KB Output is correct
71 Correct 484 ms 356216 KB Output is correct
72 Correct 519 ms 361720 KB Output is correct
73 Correct 458 ms 322888 KB Output is correct
74 Correct 429 ms 291832 KB Output is correct
75 Correct 466 ms 339064 KB Output is correct
76 Correct 579 ms 416632 KB Output is correct
77 Correct 584 ms 416760 KB Output is correct
78 Correct 396 ms 281976 KB Output is correct
79 Correct 427 ms 296820 KB Output is correct
80 Correct 576 ms 403908 KB Output is correct
81 Correct 419 ms 302072 KB Output is correct
82 Correct 468 ms 328056 KB Output is correct
83 Correct 607 ms 442696 KB Output is correct
84 Correct 493 ms 350328 KB Output is correct
85 Correct 548 ms 397560 KB Output is correct
86 Correct 532 ms 385400 KB Output is correct
87 Correct 481 ms 339064 KB Output is correct
88 Correct 630 ms 448760 KB Output is correct
89 Correct 634 ms 448760 KB Output is correct
90 Correct 511 ms 344952 KB Output is correct
91 Correct 628 ms 448888 KB Output is correct
92 Correct 615 ms 448760 KB Output is correct
93 Correct 619 ms 435680 KB Output is correct