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Submission #743083

# Submission time Handle Problem Language Result Execution time Memory
743083 2023-05-17T07:47:00 Z Joo Lightning Rod (NOI18_lightningrod) C++17
80 / 100
 2000 ms 116428 KB 
#include <bits/stdc++.h>
using namespace std;

const int MXN = 1e7 + 10;

int x[MXN], y[MXN];

int main()
{
    cin.tie(0)->sync_with_stdio(0);
    int n;
    cin >> n;
    stack<int> st;
    for (int i = 1; i <= n; i++)
    {
        cin >> x[i] >> y[i];
        while (!st.empty() and x[i] - x[st.top()] <= y[i] - y[st.top()])
            st.pop();
        if (st.empty() or !(x[i] - x[st.top()] <= y[st.top()] - y[i]))
            st.push(i);
    }
    cout << st.size() << "\n";
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1618 ms 116428 KB Output is correct
2 Correct 1497 ms 115948 KB Output is correct
3 Correct 1511 ms 112864 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 212 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 320 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 39 ms 2596 KB Output is correct
15 Correct 42 ms 2668 KB Output is correct
16 Correct 37 ms 2892 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1537 ms 104200 KB Output is correct
2 Correct 1627 ms 106140 KB Output is correct
3 Correct 1461 ms 103360 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1618 ms 116428 KB Output is correct
2 Correct 1497 ms 115948 KB Output is correct
3 Correct 1511 ms 112864 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 39 ms 2596 KB Output is correct
18 Correct 42 ms 2668 KB Output is correct
19 Correct 37 ms 2892 KB Output is correct
20 Correct 1537 ms 104200 KB Output is correct
21 Correct 1627 ms 106140 KB Output is correct
22 Correct 1461 ms 103360 KB Output is correct
23 Correct 1951 ms 72708 KB Output is correct
24 Execution timed out 2082 ms 71888 KB Time limit exceeded
25 Halted 0 ms 0 KB -