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Submission #743056

# Submission time Handle Problem Language Result Execution time Memory
743056 2023-05-17T07:40:21 Z Joo Lightning Rod (NOI18_lightningrod) C++17
80 / 100
 2000 ms 80016 KB 
#include <bits/stdc++.h>
using namespace std;

bool isContain(pair<int, int> &a, pair<int, int> &b)
{
    return (abs(a.first - b.first) <= a.second - b.second);
}

int main()
{
    cin.tie(0)->sync_with_stdio(0);
    int n;
    cin >> n;
    stack<pair<int, int>> st;
    for (int i = 1; i <= n; i++)
    {
        pair<int, int> tmp;
        cin >> tmp.first >> tmp.second;
        while (!st.empty() and isContain(tmp, st.top()))
            st.pop();
        if (st.empty() or !isContain(st.top(), tmp))
            st.push(tmp);
    }
    cout << st.size() << "\n";
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1651 ms 79888 KB Output is correct
2 Correct 1552 ms 80016 KB Output is correct
3 Correct 1504 ms 77900 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 2 ms 212 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 316 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 2 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 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 2 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 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 7 ms 340 KB Output is correct
12 Correct 4 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 316 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 2 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 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 7 ms 340 KB Output is correct
12 Correct 4 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 47 ms 3872 KB Output is correct
15 Correct 39 ms 3620 KB Output is correct
16 Correct 47 ms 3608 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1716 ms 57444 KB Output is correct
2 Correct 1782 ms 57780 KB Output is correct
3 Correct 1575 ms 56548 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1651 ms 79888 KB Output is correct
2 Correct 1552 ms 80016 KB Output is correct
3 Correct 1504 ms 77900 KB Output is correct
4 Correct 1 ms 316 KB Output is correct
5 Correct 1 ms 324 KB Output is correct
6 Correct 1 ms 324 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 7 ms 340 KB Output is correct
15 Correct 4 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 47 ms 3872 KB Output is correct
18 Correct 39 ms 3620 KB Output is correct
19 Correct 47 ms 3608 KB Output is correct
20 Correct 1716 ms 57444 KB Output is correct
21 Correct 1782 ms 57780 KB Output is correct
22 Correct 1575 ms 56548 KB Output is correct
23 Execution timed out 2009 ms 7236 KB Time limit exceeded
24 Halted 0 ms 0 KB -