Submission #26557

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
26557	2017-07-03 04:35:52	gs14004	Bulldozer (JOI17_bulldozer)	C++14	100 / 100	593 ms	33492 KiB

bulldozer

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#include <bits/stdc++.h>
using namespace std;
typedef long long lint;
typedef pair<int, int> pi;
struct sweep{
  int dx, dy, idx1, idx2;
  int mode(){
    return pi(dx, dy) < pi(0, 0);
  }
  bool operator<(const sweep &s)const{
    lint k = 1ll * dx * s.dy - 1ll * dy * s.dx;
    if(k != 0) return k > 0;
    return pi(idx1, idx2) < pi(s.idx1, s.idx2);
  }
};
lint ccw(sweep a, sweep b){
  return 1ll * a.dx * b.dy - 1ll * b.dx * a.dy;
}
struct point{
  int x, y, c;
  bool operator<(const point &p)const{
    return pi(x, y) < pi(p.x, p.y);
  }
}a[2005];
struct seg{
  struct node{
 
 
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Compilation message (stderr)

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:85:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<v.size(); ){
               ~^~~~~~~~~
bulldozer.cpp:87:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(e < v.size() && ccw(v[i], v[e]) == 0) e++;
         ~~^~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 20 / 20
• Subtask 3: 35 / 35
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20