#include <iostream>
using namespace std;
int main ( )
{
int i, j ;
int n ;
int ** matr ;
cout << "Input the number of points n =" ;
cin >> n ;
cout << "Input coordinates for the points \ n " ;
matr = new int * [ n ] ;
for ( i = 0 ; i < n ; ++ i )
{
matr [ i ] = new int [ 2 ] ;
for ( j = 0 ; j < 2 ; ++ j )
{
if ( j == 0 )
{
cout << "x" << i + 1 << "=" ;
cin >> matr [ i ] [ j ] ;
}
if ( j == 1 )
{
cout << "y" << i + 1 << "=" ;
cin >> matr [ i ] [ j ] ;
}
}
}
int r ;
cout << "Input the radius R =" ;
cin >> r ;
int count = 0 ;
for ( i = 0 ; i < n ; ++ i )
{
if ( ( pow ( matr [ i ] [ 0 ] , 2 ) + pow ( matr [ i ] [ 1 ] , 2 ) ) < pow ( r, 2 ) )
{
++ count ;
}
}
if ( count ! = 0 )
{
cout << "The number of point on the line : \ ' :" << count << " \ n " ;
}
else
{
cout << "There is point on the circle\ n " ;
}
for ( i = 0 ; i < n ; ++ i )
delete [ ] matr [ i ] ;
delete [ ] matr ;
return 0 ;
}
