Submission #245490

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
245490	2020-07-06 14:14:18	MatesV13	SIR (COI15_sir)	C++11	51 / 100	142 ms	896 KiB

sir

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#include <bits/stdc++.h>
using namespace std;
struct tocka{
  long long x;
  long long y;
} sir[3005], pap[3005];
long long n, m;
long long p(tocka a, tocka b, tocka c){
  long long povrsina=0;
  povrsina += a.x*(b.y-c.y);
  povrsina += b.x*(c.y-a.y);
  povrsina += c.x*(a.y-b.y);
  return povrsina;
}
bool check (int idx1, int idx2){
  if (idx2-idx1==n-1){
    if (m) return 0;
    return 1;
  }
  bool manje=0, vise=0;
  if (p(sir[(idx1)%n], sir[(idx2+1)%n], sir[(idx2)%n])<=0) manje=1; else vise=1;
  for (int i=0; i<m; i++){
    if (p(sir[(idx1)%n], pap[i], sir[(idx2)%n])<=0) manje=1;
    if (p(sir[(idx1)%n], pap[i], sir[(idx2)%n])>=0) vise=1;
    if (manje and vise) return 0;
  } return 1;
}
long long solve (long long lo, long long hi){
  long long prvi=lo;
  while (lo<hi){
 
 
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• Subtask 1: 12 / 12
• Subtask 2: 39 / 39
• Subtask 3: 0 / 49