Lab9

#include <iostream>
#include <math.h>
#include <cmath>
using namespace std;
int Sign(int Val) {
    if ( Val == 0) return 0;
  if (Val > 0)  return 1;
  else return -1;
}
int main()
{
    int f=0,x1=-10,y1=0,x2=-10,y2=20,x3=0,y3=10,i=8,j=15,l=10,k=0,ii,jj,ll;
    while ((k<50) && (f==0))
    {

    if(((i-x1)*(y1-y2)-(j-y1)*(x1-x2)>=0)
    &&((i-x2)*(y2-y3)-(j-y2)*(x2-x3)>=0)
    &&((i-x3)*(y3-y1)-(j-y3)*(x3-x1)>=0)) f=1;
    ii=i;jj=j;ll=l;
    i=((ii-k)*max(jj,ll)+(jj-k)*min(ii,ll)+(ll-k)*max(ii,jj)) % 23;
    j=-((ii-k)*min(jj,ll)+(jj-k)*max(ii,ll)+(ll-k)*min(ii,jj)) % 27;
    l=abs(ii+jj-ll-k)*Sign(ii-jj+ll-k);
     ++k;
     cout << k << ") " << i << " " << j << " " << l  << " " << f << endl;
    }
    if (f==1) cout<<k; else cout << "NO";
    return 0;
}