#include <stdio.h>

int numroots ( double p, double q, double r ) {
  double d = q*q - 4*p*r;

  if ( d<0 ) {
    return 0;
  } else if ( d==0 ) {
    return 1;
  } else {
    return 2;
  }
}

int main () {
  double a,b,c;
  int num;

  printf("Enter the coefficients: ");
  scanf("%lf %lf %lf", &a, &b, &c);

  num = numroots(a, b, c);

  printf( "Number of roots: %i\n", num );

  return 0;
}