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답안 #202330

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
202330 2020-02-15T12:21:07 Z wjdqhdhfflavldkem12 곡선 자르기 (KOI17_cut) C++14
100 / 100
 445 ms 24156 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 왼쪽 아래에 위치한 점으로 기준점으로 지정할 점을 찾는다.
	int xtemp, ytemp, start, xstart = INT_MAX;
	for (i = 0; i < n; i++){
		scanf("%d %d", &xtemp, &ytemp);
		x.push_back(xtemp);
		y.push_back(ytemp);
		if (xtemp <= xstart && ytemp < 0){
			start = i;
			xstart = xtemp;
		}
	}
	// 기준점 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.
	pair<int, int> temp;
	for (i = start; i < n+start-1; i++){
		if (y[i]<0 && y[i + 1]>0){
			temp.first = i;
		}
		else if (y[i]>0 && y[i + 1] < 0){
			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.*/
    int sizel=LIST.size();
	for (i = 0; i < sizel; 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:28:8: 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, xstart = INT_MAX;
                    ^~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 128 KB Output is correct
3 Correct 5 ms 248 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 6 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 352 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 128 KB Output is correct
3 Correct 5 ms 248 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 6 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 352 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 6 ms 376 KB Output is correct
19 Correct 8 ms 508 KB Output is correct
20 Correct 9 ms 760 KB Output is correct
21 Correct 9 ms 632 KB Output is correct
22 Correct 9 ms 632 KB Output is correct
23 Correct 9 ms 760 KB Output is correct
24 Correct 9 ms 680 KB Output is correct
25 Correct 9 ms 632 KB Output is correct
26 Correct 8 ms 632 KB Output is correct
27 Correct 9 ms 632 KB Output is correct
28 Correct 9 ms 632 KB Output is correct
29 Correct 9 ms 760 KB Output is correct
30 Correct 9 ms 676 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 128 KB Output is correct
3 Correct 5 ms 248 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 6 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 352 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 6 ms 376 KB Output is correct
19 Correct 8 ms 508 KB Output is correct
20 Correct 9 ms 760 KB Output is correct
21 Correct 9 ms 632 KB Output is correct
22 Correct 9 ms 632 KB Output is correct
23 Correct 9 ms 760 KB Output is correct
24 Correct 9 ms 680 KB Output is correct
25 Correct 9 ms 632 KB Output is correct
26 Correct 8 ms 632 KB Output is correct
27 Correct 9 ms 632 KB Output is correct
28 Correct 9 ms 632 KB Output is correct
29 Correct 9 ms 760 KB Output is correct
30 Correct 9 ms 676 KB Output is correct
31 Correct 86 ms 5432 KB Output is correct
32 Correct 359 ms 20004 KB Output is correct
33 Correct 82 ms 5208 KB Output is correct
34 Correct 326 ms 20148 KB Output is correct
35 Correct 396 ms 23852 KB Output is correct
36 Correct 404 ms 24156 KB Output is correct
37 Correct 416 ms 24008 KB Output is correct
38 Correct 407 ms 23980 KB Output is correct
39 Correct 445 ms 23852 KB Output is correct
40 Correct 390 ms 20016 KB Output is correct
41 Correct 396 ms 19952 KB Output is correct
42 Correct 394 ms 23856 KB Output is correct
43 Correct 396 ms 23984 KB Output is correct
44 Correct 391 ms 23856 KB Output is correct
45 Correct 403 ms 24140 KB Output is correct