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Submission #469442

# Submission time Handle Problem Language Result Execution time Memory
469442 2021-09-01T02:02:46 Z dooompy Global Warming (CEOI18_glo) C++17
0 / 100
 33 ms 4684 KB 
#include "bits/stdc++.h"

using namespace std;

using ll = long long;

int dp[100005];
int odp[100005];

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
//    freopen("", "r", stdin);
//    freopen("", "w", stdout);
    int n, x; cin >> n >> x;
    vector<int> v(n);
    for (auto &a : v) cin >> a;

    vector<int> lis;
    for (int i = 0; i < n; i++) {
        int pos = lower_bound(lis.begin(), lis.end(), v[i]) - lis.begin();
        if (pos == lis.size()) {
            lis.push_back(v[i]);
        } else {
            lis[pos] = v[i];
        }
        dp[i] = pos + 1;
    }

    lis.clear();
    for (int i = n-1; i >= 0; i--) {
        int pos = lower_bound(lis.begin(), lis.end(), -v[i]) - lis.begin();
        if (pos == lis.size()) {
            lis.push_back(-v[i]);
        } else {
            lis[pos] = -v[i];
        }

        odp[i] = pos + 1;
    }

//    for (int i = 0; i < n; i++) {
//        cout << dp[i] << " " << odp[i] << "\n";
//    }

    int ans = max(dp[0], odp[0]);

    for (int i = 0; i < n-1; i++) {
        if (abs(v[i+1] - v[i]) < x) {
            ans = max(ans, dp[i] + odp[i+1]);
        }
    }

    cout << ans;

}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:22:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |         if (pos == lis.size()) {
      |             ~~~~^~~~~~~~~~~~~
glo.cpp:33:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |         if (pos == lis.size()) {
      |             ~~~~^~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Incorrect 1 ms 204 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Incorrect 1 ms 204 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Incorrect 1 ms 204 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 33 ms 4684 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 12 ms 1356 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 2464 KB Output is correct
2 Incorrect 25 ms 2380 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Incorrect 1 ms 204 KB Output isn't correct
9 Halted 0 ms 0 KB -