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Submission #413563

# Submission time Handle Problem Language Result Execution time Memory
413563 2021-05-28T22:54:15 Z nkato Global Warming (CEOI18_glo) C++17
0 / 100
 61 ms 5316 KB 
#include <bits/stdc++.h>

using namespace std;

const int nax = 2e5+10;
int pfx[nax];

void smx(int& a, int b) { a = max(a, b); }

int main() {


	// freopen(".in", "r", stdin);
	// freopen(".out", "w", stdout);

    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int n, x; cin >> n >> x;
    vector<int> t(n);
    for(int i = 0; i < n; i++) cin >> t[i];

    int mx = 0;
	vector<int> dp(n, INT_MAX);
	for(int i = 0; i < n; i++) {
		int j = (int) (lower_bound(begin(dp), end(dp), t[i])-begin(dp));
		dp[j] = t[i];
		pfx[i] = j+1;
		smx(mx, pfx[i]);
	}

	dp = vector<int>(n, INT_MAX);

	for(int i = n-1; i >= 0; i--) {
		int pos = (int) (upper_bound(begin(dp), end(dp), t[i]+x)-begin(dp));
		smx(mx, pfx[i]+pos);
		int j = (int) (upper_bound(begin(dp), end(dp), t[i])-begin(dp));
		dp[j] = t[i];
	}

	cout << mx << endl;
    
    return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 320 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 320 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 320 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 61 ms 5316 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 1532 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 28 ms 2764 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 320 KB Output isn't correct
2 Halted 0 ms 0 KB -