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- #include <cstdlib>
- #include <iostream>
- #include <cmath>
- using namespace std;
- int main()
- { const int n=5;
- int x[n], y[n], d=0, max=0, p, q, k;
- bool m=true, l=r=false;
- cout<<"Vvedite"<<n<<" koordinat vershin\n";
- for (int i=0; i<n; i++)
- {
- cin>>x[i];
- cin>>y[i];
- }
- cout<<"Vvedite p\n";
- cin>>p;
- for (i=0; i<n; i++)
- {q=(p-x[i])*(y[i+1]-y[i])/(x[i+1]-x[i])-y[i];
- if (y[i]>=q)
- l=true;
- if (y[i]<=q)
- r=true;
- for(k=1; k<n; k++)
- {
- if ((y[k]>q&&(r))||(y[k]<q&&(l)))
- m=false;
- }
- }
- if (m)
- {
- for (int i=0; i<n; i++)
- {
- for (int j=1; j<n; j++)
- if (j>i)
- {
- d=sqrt(powl(x[i]-x[j],2)+powl(y[i]-y[j],2));
- if (d>max) max=d;
- }
- }
- cout<<"max= "<<max<<endl;
- }
- else
- cout<<"Invalid data\n";
- system("PAUSE");
- return 0;
- }
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