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Submission #161214

# Submission time Handle Problem Language Result Execution time Memory
161214 2019-11-01T12:38:18 Z rama_pang Global Warming (CEOI18_glo) C++14
0 / 100
 136 ms 8568 KB 
#include <bits/stdc++.h>
using namespace std;
using lint = long long;
const lint INF = 1e15;

lint N, X;
lint A[200005];
lint lis[200005];
lint lds[200005];
lint anslis[200005];


lint LIS() {
    for (int i = 0; i <= N; i++) lis[i] = INF, lds[i] = -INF;
    lis[0] = -INF, lds[N] = INF;

    lint res = 0;

    for (lint i = 0; i < N; i++) {
        lint j = upper_bound(lis, lis + N + 1, A[i]) - lis;
        lis[j] = A[i], res = max(res, j);
        anslis[i] = j;
    }

    for (lint i = N - 1; i >= 0; i--) {
        lint j = upper_bound(lds, lds + N + 1, A[i] - X) - lds;
        res = max(res, anslis[i] + N - j);
        
        j = lower_bound(lds, lds + N + 1, A[i]) - lds - 1;
        lds[j] = A[i];
    }

    return res;
}

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

    cin >> N >> X;
    for (int i = 0; i < N; i++) cin >> A[i];

    lint ans = LIS();
    cout << ans << "\n"; 

}

Subtask #1
0 / 5.0

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

Subtask #2
0 / 10.0

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

Subtask #3
0 / 13.0

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

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 82 ms 8568 KB Output is correct
2 Correct 83 ms 8564 KB Output is correct
3 Correct 83 ms 8568 KB Output is correct
4 Correct 136 ms 8568 KB Output is correct
5 Incorrect 75 ms 7832 KB Output isn't correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 2424 KB Output is correct
2 Correct 21 ms 2424 KB Output is correct
3 Correct 21 ms 2424 KB Output is correct
4 Incorrect 17 ms 2168 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 4472 KB Output is correct
2 Correct 36 ms 4532 KB Output is correct
3 Correct 74 ms 8564 KB Output is correct
4 Incorrect 66 ms 7736 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

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