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Submission #743830

# Submission time Handle Problem Language Result Execution time Memory
743830 2023-05-18T04:07:53 Z vjudge1 Lightning Rod (NOI18_lightningrod) C++17
100 / 100
 1688 ms 82124 KB 
#include <bits/stdc++.h>
#define x first
#define y second
using namespace std;
stack<pair<int,int>> st;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    int n; cin >> n;
    while (n--) {
        int a,b; cin >> a >> b;
        if (!st.empty() && abs(a - st.top().x) <= st.top().y - b) continue;
        while (!st.empty() && abs(a - st.top().x) <= b - st.top().y) st.pop();
        
        st.push({a, b});
    }
    cout << st.size();
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1388 ms 82124 KB Output is correct
2 Correct 1389 ms 81104 KB Output is correct
3 Correct 1300 ms 79120 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 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 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 212 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 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 1 ms 320 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 212 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 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 1 ms 320 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 328 KB Output is correct

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 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 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 1 ms 320 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 328 KB Output is correct
14 Correct 38 ms 1512 KB Output is correct
15 Correct 38 ms 1500 KB Output is correct
16 Correct 37 ms 2208 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1409 ms 52844 KB Output is correct
2 Correct 1513 ms 56688 KB Output is correct
3 Correct 1428 ms 54108 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1388 ms 82124 KB Output is correct
2 Correct 1389 ms 81104 KB Output is correct
3 Correct 1300 ms 79120 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 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 1 ms 324 KB Output is correct
12 Correct 1 ms 320 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 328 KB Output is correct
17 Correct 38 ms 1512 KB Output is correct
18 Correct 38 ms 1500 KB Output is correct
19 Correct 37 ms 2208 KB Output is correct
20 Correct 1409 ms 52844 KB Output is correct
21 Correct 1513 ms 56688 KB Output is correct
22 Correct 1428 ms 54108 KB Output is correct
23 Correct 1673 ms 4824 KB Output is correct
24 Correct 1688 ms 4664 KB Output is correct
25 Correct 1622 ms 8340 KB Output is correct