답안 #744004

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
744004	2023-05-18T07:08:41 Z	vjudge1	Lightning Rod (NOI18_lightningrod)	C++17	100 / 100	1691 ms	156524 KB

lightningrod

#include<bits/stdc++.h>
using namespace std;

struct point
{
    int x,y;
};

int n;
vector<point> vec;
stack<point> st;
int cnt = 0;

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n;
    for(int i=0;i<n;++i)
    {
        int a,b;
        cin >> a >> b;
        vec.push_back({a,b});
    }
    for(int i=0;i<n;++i)
    {
        while(!st.empty() && vec[i].y-st.top().y >= vec[i].x-st.top().x) st.pop();
        if(st.empty() || !(st.top().y-vec[i].y >= vec[i].x-st.top().x))
        {
//            cout << "add " << vec[i].x << " " << vec[i].y << '\n';
            st.push({vec[i].x,vec[i].y});
        }
    }
    cout << st.size();
    return 0;
}

Subtask #1

4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1540 ms	156524 KB	Output is correct
2	Correct	1461 ms	156240 KB	Output is correct
3	Correct	1444 ms	152248 KB	Output is correct

Subtask #2

7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	324 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

Subtask #3

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	324 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	1 ms	212 KB	Output is correct
9	Correct	1 ms	316 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct

Subtask #4

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	324 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	1 ms	212 KB	Output is correct
9	Correct	1 ms	316 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	2 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct

Subtask #5

26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	324 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	1 ms	212 KB	Output is correct
9	Correct	1 ms	316 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	2 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	39 ms	3328 KB	Output is correct
15	Correct	41 ms	3500 KB	Output is correct
16	Correct	35 ms	3396 KB	Output is correct

Subtask #6

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1437 ms	132116 KB	Output is correct
2	Correct	1494 ms	132752 KB	Output is correct
3	Correct	1485 ms	132880 KB	Output is correct

Subtask #7

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1540 ms	156524 KB	Output is correct
2	Correct	1461 ms	156240 KB	Output is correct
3	Correct	1444 ms	152248 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	324 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	316 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	316 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	2 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	39 ms	3328 KB	Output is correct
18	Correct	41 ms	3500 KB	Output is correct
19	Correct	35 ms	3396 KB	Output is correct
20	Correct	1437 ms	132116 KB	Output is correct
21	Correct	1494 ms	132752 KB	Output is correct
22	Correct	1485 ms	132880 KB	Output is correct
23	Correct	1691 ms	132928 KB	Output is correct
24	Correct	1682 ms	132944 KB	Output is correct
25	Correct	1677 ms	133928 KB	Output is correct