제출 #227476

#제출 시각아이디문제언어결과실행 시간메모리
227476cgiosy곡선 자르기 (KOI17_cut)C++17
0 / 100
5 ms384 KiB
#pragma GCC optimize("O3") #include <bits/stdc++.h> using namespace std; int main() { ios::sync_with_stdio(0); int N, sx, sy, px, py, qx; cin>>N>>sx>>sy; px=qx=sx, py=sy; set<int> A; for(int i=N; i--;) { int x, y; if(i) cin>>x>>y; else x=sx, y=sy; if((y>0)!=(py>0) || !i && (y>0 && py>0)) { if((!i || y<0) && qx!=x) { A.insert(min(qx, x)*2); A.insert(max(qx, x)*2+1); } qx=x; } px=x, py=y; } 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; }

컴파일 시 표준 에러 (stderr) 메시지

cut.cpp: In function 'int main()':
cut.cpp:14:26: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   if((y>0)!=(py>0) || !i && (y>0 && py>0)) {
                       ~~~^~~~~~~~~~~~~~~~
cut.cpp:7:17: warning: variable 'px' set but not used [-Wunused-but-set-variable]
  int N, sx, sy, px, py, qx;
                 ^~
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