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Submission #968703

# Submission time Handle Problem Language Result Execution time Memory
968703 2024-04-23T21:26:31 Z blackslex Global Warming (CEOI18_glo) C++17
0 / 100
 47 ms 4704 KB 
#include<bits/stdc++.h>

using namespace std;

int n, d;

int main() {
    scanf("%d %d", &n, &d);
    vector<int> t(n), dp(n), dp2(n);
    for (auto &e: t) scanf("%d", &e);
    vector<int> c;
    for (int i = 0; i < n; i++) {
        auto lower = lower_bound(c.begin(), c.end(), t[i]);
        if (lower == c.end()) c.emplace_back(t[i]), dp[i] = c.size();
        else *lower = t[i], dp[i] = lower - c.begin() + 1;
    }
    int ans = c.size(); c.clear();
    for (int i = n - 1; i >= 0; i--) {
        auto lower = lower_bound(c.begin(), c.end(), -t[i]);
        dp2[i] = lower_bound(c.begin(), c.end(), -t[i] + d) - c.begin();
        if (lower == c.end()) c.emplace_back(-t[i]);
        else *lower = -t[i];
    }
    for (int i = 1; i < n; i++) ans = max(ans, dp[i - 1] + dp2[i]);
    printf("%d", ans);
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:8:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |     scanf("%d %d", &n, &d);
      |     ~~~~~^~~~~~~~~~~~~~~~~
glo.cpp:10:27: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     for (auto &e: t) scanf("%d", &e);
      |                      ~~~~~^~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 47 ms 4688 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 1372 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 2392 KB Output is correct
2 Correct 19 ms 2396 KB Output is correct
3 Correct 39 ms 4704 KB Output is correct
4 Incorrect 24 ms 4564 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -