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답안 #202304

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
202304 2020-02-15T08:45:08 Z wjdqhdhfflavldkem12 곡선 자르기 (KOI17_cut) C++14
100 / 100
 451 ms 44332 KB 
#include <stdio.h>
#include <vector>
#include <algorithm>
#include <limits.h>
using namespace std;

#define LEFT 0
#define RIGHT 1
#define node pair<int, bool>

int n, ansCount, inPeak, outPeak;
vector<int> x, y;
vector<node> LIST;

bool compare(node a, node b){
	return a.first < b.first;
}

int main(){
	int i;

	/*변수입력*/
	//꼭짓점의 개수 입력
	scanf("%d", &n);
	//각 꼭짓점의 x, y좌표 입력 & 가장 왼쪽에 있는 수직선분의 두 점 중 아래의 점으로 시작지점으로 지정할 점을 찾는다.
	int xtemp, ytemp, start;
	int minx = INT_MAX, miny = INT_MAX;
	for (i = 0; i < n; i++){
		scanf("%d %d", &xtemp, &ytemp);
		x.push_back(xtemp);
		y.push_back(ytemp);
		if (ytemp <= miny && xtemp <= minx){
			start = i;
			minx = xtemp; miny = ytemp;
		}
	}
	// 시작지점 이전의 점들을 시작지점 이후로 옮겨 붙인다.
	for (i = 0; i < start; i++){
		x.push_back(x[i]);
		y.push_back(y[i]);
	}

	/*봉우리의 시작 기둥과 끝기둥을 찾아 입력한다.*/
	//두 개의 기둥을 왼쪽 기둥과 오른쪽 기둥으로 구분하여 입력한다.
	int size = 0;
	pair<int, int> temp;
	for (i = start; i < n+start-1; i++){
		if (y[i]<0 && y[i + 1]>0){
			size++;
			temp.first = i;
		}
		else if (y[i]>0 && y[i + 1] < 0){
			size++;
			temp.second = i;
			if (x[temp.first] < x[temp.second]){
				LIST.push_back(node(x[temp.first], LEFT));
				LIST.push_back(node(x[temp.second], RIGHT));
			}
			else{
				LIST.push_back(node(x[temp.first], RIGHT));
				LIST.push_back(node(x[temp.second], LEFT));
			}
		}
	}

	/*입력된 기둥을 x좌표를 기준으로 오름차순 정렬한다.*/
	sort(LIST.begin(), LIST.end(), compare);
	
	/*기둥의 배치를 이용하여 원하는 봉우리의 개수를 찾는다.*/
	for (i = 0; i < size; i++){
		if (LIST[i].second == LEFT){
			ansCount++;
		}
		else{
			ansCount--;
			if (ansCount == 0)
				outPeak++;
			if (LIST[i - 1].second == LEFT)
				inPeak++;
		}
	}

	/*표준출력에 맞추어 출력한다.*/
	printf("%d %d\n", outPeak, inPeak);

	return 0;
}

Compilation message

cut.cpp: In function 'int main()':
cut.cpp:24:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
cut.cpp:29:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &xtemp, &ytemp);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
cut.cpp:26:20: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
  int xtemp, ytemp, start;
                    ^~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 380 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 256 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 380 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 256 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 380 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 256 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 380 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 7 ms 376 KB Output is correct
19 Correct 9 ms 632 KB Output is correct
20 Correct 9 ms 760 KB Output is correct
21 Correct 9 ms 760 KB Output is correct
22 Correct 9 ms 760 KB Output is correct
23 Correct 9 ms 760 KB Output is correct
24 Correct 9 ms 760 KB Output is correct
25 Correct 8 ms 760 KB Output is correct
26 Correct 9 ms 760 KB Output is correct
27 Correct 9 ms 760 KB Output is correct
28 Correct 10 ms 760 KB Output is correct
29 Correct 9 ms 760 KB Output is correct
30 Correct 9 ms 760 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 380 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 256 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 380 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 7 ms 376 KB Output is correct
19 Correct 9 ms 632 KB Output is correct
20 Correct 9 ms 760 KB Output is correct
21 Correct 9 ms 760 KB Output is correct
22 Correct 9 ms 760 KB Output is correct
23 Correct 9 ms 760 KB Output is correct
24 Correct 9 ms 760 KB Output is correct
25 Correct 8 ms 760 KB Output is correct
26 Correct 9 ms 760 KB Output is correct
27 Correct 9 ms 760 KB Output is correct
28 Correct 10 ms 760 KB Output is correct
29 Correct 9 ms 760 KB Output is correct
30 Correct 9 ms 760 KB Output is correct
31 Correct 86 ms 9164 KB Output is correct
32 Correct 378 ms 36404 KB Output is correct
33 Correct 85 ms 8784 KB Output is correct
34 Correct 330 ms 34480 KB Output is correct
35 Correct 410 ms 43836 KB Output is correct
36 Correct 412 ms 43944 KB Output is correct
37 Correct 441 ms 44332 KB Output is correct
38 Correct 416 ms 43716 KB Output is correct
39 Correct 451 ms 44224 KB Output is correct
40 Correct 411 ms 40272 KB Output is correct
41 Correct 411 ms 39984 KB Output is correct
42 Correct 414 ms 42416 KB Output is correct
43 Correct 423 ms 42268 KB Output is correct
44 Correct 405 ms 42260 KB Output is correct
45 Correct 414 ms 42752 KB Output is correct