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Submission #1021751

# Submission time Handle Problem Language Result Execution time Memory
1021751 2024-07-13T04:38:45 Z ef10 Global Warming (CEOI18_glo) C++17
100 / 100
 82 ms 6284 KB 
// Source: https://usaco.guide/general/io

#include <bits/stdc++.h>
using namespace std;

#define LL long long

LL N, X;
LL A[200005];
LL PR[200005];
LL dp[200005];

int main() {
	cin >> N >> X;
	for (int i = 1; i <= N; i++) {
		cin >> A[i];
	}
	LL res = 0;
	dp[1] = A[1];
	LL E = 2;
	for (int i = 2; i <= N; i++) {
		int ind = lower_bound(dp+1,dp+E,A[i])-dp;
		PR[i]=ind;
		res = max(res,PR[i]);
		dp[ind] = A[i];
		if (ind==E) {
			E++;
		}
	}
	dp[1]=-A[N];
	E=2;
	for (int i = N-1; i>=1; i--) {
		int ind = lower_bound(dp+1,dp+E,X-A[i])-dp;
		res = max(res,PR[i]+ind-1);

		ind = lower_bound(dp+1,dp+E,-A[i])-dp;
		dp[ind]=-A[i];
		if (ind == E) {
			E++;
		}
	}
	cout << res << endl;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 444 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 444 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 444 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 5372 KB Output is correct
2 Correct 73 ms 5436 KB Output is correct
3 Correct 82 ms 5456 KB Output is correct
4 Correct 71 ms 5460 KB Output is correct
5 Correct 45 ms 5460 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 1628 KB Output is correct
2 Correct 17 ms 1628 KB Output is correct
3 Correct 17 ms 1628 KB Output is correct
4 Correct 10 ms 1624 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 10 ms 1624 KB Output is correct
7 Correct 16 ms 1608 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 2900 KB Output is correct
2 Correct 32 ms 2952 KB Output is correct
3 Correct 78 ms 5440 KB Output is correct
4 Correct 42 ms 5356 KB Output is correct
5 Correct 20 ms 2908 KB Output is correct
6 Correct 38 ms 5284 KB Output is correct
7 Correct 53 ms 5972 KB Output is correct
8 Correct 30 ms 2908 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 444 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 68 ms 5372 KB Output is correct
28 Correct 73 ms 5436 KB Output is correct
29 Correct 82 ms 5456 KB Output is correct
30 Correct 71 ms 5460 KB Output is correct
31 Correct 45 ms 5460 KB Output is correct
32 Correct 17 ms 1628 KB Output is correct
33 Correct 17 ms 1628 KB Output is correct
34 Correct 17 ms 1628 KB Output is correct
35 Correct 10 ms 1624 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 10 ms 1624 KB Output is correct
38 Correct 16 ms 1608 KB Output is correct
39 Correct 32 ms 2900 KB Output is correct
40 Correct 32 ms 2952 KB Output is correct
41 Correct 78 ms 5440 KB Output is correct
42 Correct 42 ms 5356 KB Output is correct
43 Correct 20 ms 2908 KB Output is correct
44 Correct 38 ms 5284 KB Output is correct
45 Correct 53 ms 5972 KB Output is correct
46 Correct 30 ms 2908 KB Output is correct
47 Correct 35 ms 2764 KB Output is correct
48 Correct 35 ms 3024 KB Output is correct
49 Correct 68 ms 5320 KB Output is correct
50 Correct 42 ms 5460 KB Output is correct
51 Correct 33 ms 4216 KB Output is correct
52 Correct 42 ms 5460 KB Output is correct
53 Correct 42 ms 5464 KB Output is correct
54 Correct 74 ms 6284 KB Output is correct
55 Correct 62 ms 5316 KB Output is correct