답안 #425589

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
425589	2021-06-13T08:01:23 Z	EleCursity	Lightning Rod (NOI18_lightningrod)	C++17	100 / 100	936 ms	191852 KB

lightningrod

#include <bits/stdc++.h>
using namespace std;
int readInt(){
    int x = 0;
    char ch = getchar();
    while (ch < '0' || ch > '9') ch = getchar();
    while (ch >= '0' && ch <= '9'){
        x = (x << 3) + (x << 1) + ch - '0';
        ch = getchar();
    }
    return x;
}
int main(){
  int n = readInt();
  stack<pair<int,int> > stk;
  for(int i=1;i<=n;i++){
    int x = readInt();
    int y = readInt();
    if(stk.empty()){
      stk.push({x,y});
    }
    else{
      while(!stk.empty()){
        int xx = stk.top().first;
        int yy = stk.top().second;
        if(yy>y){
          int dx = x-xx;
          int dy = yy-y;
          if(dy<dx){
              stk.push({x,y});
          }
          break;
        }
        int dx = x-xx;
        int dy = y-yy;
        if(dy>=dx){
          stk.pop();
        }else{
          stk.push({x,y});
          break;
        }
      }
      if(stk.empty()){
        stk.push({x,y});
      }

    }
  }
  cout<<stk.size()<<endl;
  return 0;
}

Subtask #1

4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	681 ms	146928 KB	Output is correct
2	Correct	611 ms	191852 KB	Output is correct
3	Correct	626 ms	186828 KB	Output is correct

Subtask #2

7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	296 KB	Output is correct
4	Correct	1 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	1 ms	204 KB	Output is correct

Subtask #3

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	296 KB	Output is correct
4	Correct	1 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	1 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	1 ms	296 KB	Output is correct

Subtask #4

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	296 KB	Output is correct
4	Correct	1 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	1 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	1 ms	296 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	1 ms	332 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	296 KB	Output is correct
4	Correct	1 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	1 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	1 ms	296 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	23 ms	3840 KB	Output is correct
15	Correct	19 ms	3660 KB	Output is correct
16	Correct	17 ms	3660 KB	Output is correct

Subtask #6

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	633 ms	107628 KB	Output is correct
2	Correct	625 ms	107488 KB	Output is correct
3	Correct	599 ms	105048 KB	Output is correct

Subtask #7

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	681 ms	146928 KB	Output is correct
2	Correct	611 ms	191852 KB	Output is correct
3	Correct	626 ms	186828 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	296 KB	Output is correct
7	Correct	1 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	1 ms	204 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	1 ms	296 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	23 ms	3840 KB	Output is correct
18	Correct	19 ms	3660 KB	Output is correct
19	Correct	17 ms	3660 KB	Output is correct
20	Correct	633 ms	107628 KB	Output is correct
21	Correct	625 ms	107488 KB	Output is correct
22	Correct	599 ms	105048 KB	Output is correct
23	Correct	936 ms	108352 KB	Output is correct
24	Correct	868 ms	95932 KB	Output is correct
25	Correct	851 ms	86152 KB	Output is correct