답안 #494524

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
494524	2021-12-15T16:53:36 Z	blue	Lightning Rod (NOI18_lightningrod)	C++17	100 / 100	1889 ms	157220 KB

lightningrod

#include <iostream>
#include <vector>
#include <cmath>
#include <cstdlib>
#include <algorithm>
using namespace std;

using pii = pair<int, int>;
#define sz(x) int(x.size())

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int N;
    cin >> N;

    vector<int> P;

    int x[1+N], y[1+N];

    cin >> x[1] >> y[1];

    P.push_back(1);

    for(int i = 2; i <= N; i++)
    {
        cin >> x[i] >> y[i];
        if(abs(x[i] - x[P.back()]) <= y[P.back()] - y[i]) continue;
        while(!P.empty() && abs(x[P.back()] - x[i]) <= y[i] - y[P.back()])
            P.pop_back();
        P.push_back(i);
    }

    cout << sz(P) << '\n';
}

Subtask #1

4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1482 ms	157220 KB	Output is correct
2	Correct	1463 ms	156924 KB	Output is correct
3	Correct	1434 ms	154484 KB	Output is correct

Subtask #2

7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	1 ms	308 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct

Subtask #3

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	1 ms	308 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	0 ms	204 KB	Output is correct
9	Correct	0 ms	308 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct

Subtask #4

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	1 ms	308 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	0 ms	204 KB	Output is correct
9	Correct	0 ms	308 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct

Subtask #5

26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	1 ms	308 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	0 ms	204 KB	Output is correct
9	Correct	0 ms	308 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	50 ms	5304 KB	Output is correct
15	Correct	42 ms	5132 KB	Output is correct
16	Correct	39 ms	4852 KB	Output is correct

Subtask #6

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1690 ms	124240 KB	Output is correct
2	Correct	1522 ms	124052 KB	Output is correct
3	Correct	1499 ms	122088 KB	Output is correct

Subtask #7

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1482 ms	157220 KB	Output is correct
2	Correct	1463 ms	156924 KB	Output is correct
3	Correct	1434 ms	154484 KB	Output is correct
4	Correct	0 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	1 ms	308 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	0 ms	204 KB	Output is correct
12	Correct	0 ms	308 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	50 ms	5304 KB	Output is correct
18	Correct	42 ms	5132 KB	Output is correct
19	Correct	39 ms	4852 KB	Output is correct
20	Correct	1690 ms	124240 KB	Output is correct
21	Correct	1522 ms	124052 KB	Output is correct
22	Correct	1499 ms	122088 KB	Output is correct
23	Correct	1889 ms	95360 KB	Output is correct
24	Correct	1803 ms	90692 KB	Output is correct
25	Correct	1866 ms	81740 KB	Output is correct