답안 #161429

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
161429	2019-11-02T13:17:53 Z	Berted	Lightning Rod (NOI18_lightningrod)	C++14	66 / 100	2000 ms	172080 KB

lightningrod

#include <iostream>
#include <stack>
#include <cstdio>
#define pii pair<int,int>
#define fst first
#define snd second
using namespace std;
stack<pii> s;
int n,a,b;
int main()
{
	scanf("%d",&n);
	for (int i=0;i<n;i++)
	{
		scanf("%d %d",&a,&b);
		if (s.empty()) {s.push({a,b});}
		else 
		{
			if (a - s.top().fst > s.top().snd - b)
			{
				while (s.size())
				{
					if (a - s.top().fst <= b - s.top().snd) {s.pop();}
					else {break;}
				}
				s.push({a,b});
			}
		}
		//cout<<i<<" "<<s.size()<<"\n";
	}
	printf("%d\n",(int)s.size());
	return 0;
}

Compilation message

lightningrod.cpp: In function 'int main()':
lightningrod.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
lightningrod.cpp:15:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&a,&b);
   ~~~~~^~~~~~~~~~~~~~~

Subtask #1

0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Execution timed out	2070 ms	172080 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Subtask #2

7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct

Subtask #3

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	256 KB	Output is correct
9	Correct	2 ms	256 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct

Subtask #4

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	256 KB	Output is correct
9	Correct	2 ms	256 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	3 ms	376 KB	Output is correct
12	Correct	3 ms	376 KB	Output is correct
13	Correct	3 ms	376 KB	Output is correct

Subtask #5

26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	256 KB	Output is correct
9	Correct	2 ms	256 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	3 ms	376 KB	Output is correct
12	Correct	3 ms	376 KB	Output is correct
13	Correct	3 ms	376 KB	Output is correct
14	Correct	64 ms	3940 KB	Output is correct
15	Correct	59 ms	3704 KB	Output is correct
16	Correct	75 ms	3832 KB	Output is correct

Subtask #6

0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Execution timed out	2013 ms	124872 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Subtask #7

0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Execution timed out	2070 ms	172080 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-