oj.uz

답안 #227432

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
227432 2020-04-27T12:23:21 Z cgiosy 곡선 자르기 (KOI17_cut) C++17
0 / 100
 5 ms 384 KB 
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
constexpr int INF=0x3f3f3f3f;

int main() {
	ios::sync_with_stdio(0);cin.tie(0);
	int N, sx, sy, px, py, qx=INF;
	cin>>N>>sx>>sy; px=sx, py=sy;
	vector<int> A;
	A.reserve(N/4+2);
	auto push=[&](int &s, int &e) {
		A.push_back(min(s, e)*2);
		A.push_back(max(s, e)*2+1);
		s=e=INF;
	};
	for(int i=1; i<N; i++) {
		int x, y;
		cin>>x>>y;
		if((y>0)!=(py>0)) {
			if(qx!=INF) push(qx, x);
			qx=x;
		}
		px=x, py=y;
	}
	if(qx!=INF) push(qx, sx);
	sort(begin(A), end(A));
	int a=0, b=0, c=0, p=0;
	for(int x:A) {
		if(x%2) a+=!--c, b+=!p, p=1;
		else c++, p=0;
	}
	cout<<a<<' '<<b;
}

Compilation message

cut.cpp: In function 'int main()':
cut.cpp:8:17: warning: variable 'px' set but not used [-Wunused-but-set-variable]
  int N, sx, sy, px, py, qx=INF;
                 ^~

Subtask #1
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Incorrect 5 ms 384 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Incorrect 5 ms 384 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Incorrect 5 ms 384 KB Output isn't correct
4 Halted 0 ms 0 KB -