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Submission #795634

# Submission time Handle Problem Language Result Execution time Memory
795634 2023-07-27T11:52:26 Z Trisanu_Das Global Warming (CEOI18_glo) C++17
100 / 100
 39 ms 4668 KB 
#include <bits/stdc++.h>
using namespace std;
 
const int N = 2e5 + 1, mod = 1e9 + 7;
 
int n, x, ans = 0, a[N], f[2][N];
 
int main() {
    cin.tie(0) -> sync_with_stdio(0);
	cin >> n >> x;
	for (int i = 1; i <= n; i++) {
		cin >> a[i];
		f[0][i] = f[1][i] = INT_MAX;
	}
	f[0][0] = f[1][0] = -INT_MAX;
	for (int i = 2; i <= n; i++) {
		int k = lower_bound(f[0] + 1, f[0] + n + 1, a[i - 1] - x) - f[0];
		f[0][k] = a[i - 1] - x;
		f[1][k] = min(f[1][k], f[0][k]);
		ans = max(ans, k);
		k = lower_bound(f[1] + 1, f[1] + n + 1, a[i]) - f[1];
		f[1][k] = a[i];
		ans = max(ans, k);
	}
	cout << ans << '\n';
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 4480 KB Output is correct
2 Correct 36 ms 4576 KB Output is correct
3 Correct 36 ms 4556 KB Output is correct
4 Correct 38 ms 4556 KB Output is correct
5 Correct 26 ms 3796 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1368 KB Output is correct
2 Correct 9 ms 1404 KB Output is correct
3 Correct 9 ms 1392 KB Output is correct
4 Correct 7 ms 1108 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 8 ms 1364 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 2460 KB Output is correct
2 Correct 19 ms 2372 KB Output is correct
3 Correct 39 ms 4564 KB Output is correct
4 Correct 28 ms 3760 KB Output is correct
5 Correct 14 ms 2088 KB Output is correct
6 Correct 26 ms 3668 KB Output is correct
7 Correct 27 ms 4404 KB Output is correct
8 Correct 16 ms 2468 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 37 ms 4480 KB Output is correct
28 Correct 36 ms 4576 KB Output is correct
29 Correct 36 ms 4556 KB Output is correct
30 Correct 38 ms 4556 KB Output is correct
31 Correct 26 ms 3796 KB Output is correct
32 Correct 9 ms 1368 KB Output is correct
33 Correct 9 ms 1404 KB Output is correct
34 Correct 9 ms 1392 KB Output is correct
35 Correct 7 ms 1108 KB Output is correct
36 Correct 0 ms 340 KB Output is correct
37 Correct 7 ms 1108 KB Output is correct
38 Correct 8 ms 1364 KB Output is correct
39 Correct 19 ms 2460 KB Output is correct
40 Correct 19 ms 2372 KB Output is correct
41 Correct 39 ms 4564 KB Output is correct
42 Correct 28 ms 3760 KB Output is correct
43 Correct 14 ms 2088 KB Output is correct
44 Correct 26 ms 3668 KB Output is correct
45 Correct 27 ms 4404 KB Output is correct
46 Correct 16 ms 2468 KB Output is correct
47 Correct 18 ms 2472 KB Output is correct
48 Correct 19 ms 2412 KB Output is correct
49 Correct 37 ms 4452 KB Output is correct
50 Correct 26 ms 3768 KB Output is correct
51 Correct 23 ms 2936 KB Output is correct
52 Correct 28 ms 3928 KB Output is correct
53 Correct 24 ms 3884 KB Output is correct
54 Correct 31 ms 4668 KB Output is correct
55 Correct 37 ms 4604 KB Output is correct