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Submission #197850

# Submission time Handle Problem Language Result Execution time Memory
197850 2020-01-23T17:00:15 Z tuna Global Warming (CEOI18_glo) C++11
10 / 100
 65 ms 4824 KB 
#include "bits/stdc++.h"
using ll = long long;
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[1] + 1, f[1] + n + 1, a[i]) - f[1];
		f[1][k] = a[i];
		ans = max(ans, k);
		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);
	}
	cout << ans;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 4668 KB Output is correct
2 Correct 63 ms 4824 KB Output is correct
3 Correct 65 ms 4728 KB Output is correct
4 Correct 63 ms 4680 KB Output is correct
5 Correct 44 ms 4064 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 1432 KB Output is correct
2 Correct 17 ms 1400 KB Output is correct
3 Correct 17 ms 1576 KB Output is correct
4 Correct 13 ms 1272 KB Output is correct
5 Incorrect 2 ms 376 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 2476 KB Output is correct
2 Correct 31 ms 2556 KB Output is correct
3 Correct 61 ms 4636 KB Output is correct
4 Incorrect 48 ms 3832 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -