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Submission #743947

# Submission time Handle Problem Language Result Execution time Memory
743947 2023-05-18T06:34:27 Z vjudge1 Lightning Rod (NOI18_lightningrod) C++17
21 / 100
 1472 ms 79748 KB 
#include<bits/stdc++.h>
using namespace std;

struct point
{
    int x,y;
};

int n;
vector<point> vec;

int cnt = 0;

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n;
    stack<point> st;
    for(int i=0;i<n;++i)
    {
        int a,b;
        cin >> a >> b;
        if(!st.empty() && b < st.top().y && abs(a-st.top().x) <= st.top().y-b) continue;
        if(!st.empty() && b > st.top().y && abs(a-st.top().x) <= b-st.top().y)
        {
            st.push({a,b});
            continue;
        }
        ++cnt;
        st.push({a,b});
    }
    cout << cnt;
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1472 ms 79748 KB Output is correct
2 Correct 1416 ms 79500 KB Output is correct
3 Correct 1367 ms 77328 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 316 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 316 KB Output is correct

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 316 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 316 KB Output is correct
8 Incorrect 0 ms 212 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 316 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 316 KB Output is correct
8 Incorrect 0 ms 212 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 316 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 316 KB Output is correct
8 Incorrect 0 ms 212 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1303 ms 61584 KB Output is correct
2 Correct 1356 ms 61556 KB Output is correct
3 Correct 1307 ms 59888 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1472 ms 79748 KB Output is correct
2 Correct 1416 ms 79500 KB Output is correct
3 Correct 1367 ms 77328 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 316 KB Output is correct
9 Correct 1 ms 312 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Incorrect 0 ms 212 KB Output isn't correct
12 Halted 0 ms 0 KB -