답안 #227648

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
227648	2020-04-28T08:59:31 Z	Autoratch	Lightning Rod (NOI18_lightningrod)	C++14	100 / 100	672 ms	191912 KB

lightningrod

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

int n,x,y;
stack<pair<int,int> > a;

int readInt()
{
    int x = 0;
    char ch = getchar_unlocked();
    while (ch < '0' || ch > '9') ch = getchar_unlocked();
    while (ch >= '0' && ch <= '9'){
		x = (x << 3) + (x << 1) + ch - '0';
		ch = getchar_unlocked();
	}
    return x;
}

int main()
{
    n = readInt();
    for(int i = 0;i < n;i++)
    {
        x = readInt(),y = readInt();
        while(!a.empty() and abs(a.top().first-x)<=y-a.top().second) a.pop();
        if(a.empty() or abs(a.top().first-x)>a.top().second-y) a.push({x,y});
    }
    printf("%d",(int)a.size());
}

Subtask #1

4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	410 ms	82248 KB	Output is correct
2	Correct	442 ms	191912 KB	Output is correct
3	Correct	437 ms	186744 KB	Output is correct

Subtask #2

7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	256 KB	Output is correct
3	Correct	5 ms	256 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 ms	256 KB	Output is correct
6	Correct	4 ms	256 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct

Subtask #3

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	256 KB	Output is correct
3	Correct	5 ms	256 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 ms	256 KB	Output is correct
6	Correct	4 ms	256 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	512 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct

Subtask #4

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	256 KB	Output is correct
3	Correct	5 ms	256 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 ms	256 KB	Output is correct
6	Correct	4 ms	256 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	512 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct

Subtask #5

26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	4 ms	256 KB	Output is correct
3	Correct	5 ms	256 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	5 ms	256 KB	Output is correct
6	Correct	4 ms	256 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	512 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	17 ms	1408 KB	Output is correct
15	Correct	17 ms	1408 KB	Output is correct
16	Correct	16 ms	2176 KB	Output is correct

Subtask #6

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	377 ms	51576 KB	Output is correct
2	Correct	430 ms	147580 KB	Output is correct
3	Correct	411 ms	143772 KB	Output is correct

Subtask #7

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	410 ms	82248 KB	Output is correct
2	Correct	442 ms	191912 KB	Output is correct
3	Correct	437 ms	186744 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	4 ms	256 KB	Output is correct
6	Correct	5 ms	256 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	256 KB	Output is correct
9	Correct	4 ms	256 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	512 KB	Output is correct
12	Correct	5 ms	384 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	5 ms	384 KB	Output is correct
15	Correct	5 ms	384 KB	Output is correct
16	Correct	5 ms	384 KB	Output is correct
17	Correct	17 ms	1408 KB	Output is correct
18	Correct	17 ms	1408 KB	Output is correct
19	Correct	16 ms	2176 KB	Output is correct
20	Correct	377 ms	51576 KB	Output is correct
21	Correct	430 ms	147580 KB	Output is correct
22	Correct	411 ms	143772 KB	Output is correct
23	Correct	672 ms	175328 KB	Output is correct
24	Correct	602 ms	156512 KB	Output is correct
25	Correct	569 ms	139916 KB	Output is correct