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a guest Feb 17th, 2019 76 Never
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  1. #include <stdio.h>
  2.  
  3. int main()
  4. {
  5.     long int n,i,j,q,sum=0,l,x1,y1;
  6.     scanf("%ld",&n);
  7.     double X[n],Y[n],M[n],N[n],k[n],V[n];
  8.     for(i=0; i<n; ++i)
  9.     {
  10.          scanf("%lf%lf%lf%lf",&X[i],&Y[i],&M[i],&N[i]);
  11.          if (Y[i]!=N[i] && X[i]!=M[i])
  12.          {
  13.           k[i]=(N[i]-Y[i])/(M[i]-X[i]);
  14.           V[i]=(N[i]*X[i]-Y[i]*M[i])/(X[i]-M[i]);
  15.          }
  16.     }
  17.     scanf("%ld",&q);
  18.     double A[q],B[q],R[q],Q[q];
  19.     for(i=0; i<q; ++i)
  20.     {
  21.          scanf("%lf%lf%lf",&A[i],&B[i],&R[i]);
  22.     }
  23.     for (i=0; i<q; ++i)
  24.     {
  25.          for (j=0; j<n; ++j)
  26.          {
  27.            if (X[j]==M[j] && X[j]<R[i]+A[i] && X[j]>A[i]-R[i])
  28.            {
  29.              sum++;
  30.            }
  31.            else if (Y[j]==N[j] && Y[j]<R[i]+B[i] && Y[j]>B[i]-R[i])
  32.            {
  33.              sum++;
  34.            }
  35.            else if (X[j]!=M[j] && Y[j]!=N[j])
  36.            {
  37.                 if (R[i]*R[i]*(k[j]*k[j]+1)-(k[j]*A[i]-B[i]+V[j])*(k[j]*A[i]-B[i]+V[j])>=0) // formula za proveru pripadnosti prave kruznici
  38.                 {
  39.                      sum++;
  40.                 }
  41.            }
  42.          }
  43.          printf("%ld\n",sum);
  44.          sum=0;
  45.     }
  46.     return 0;
  47. }
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