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Jul 21st, 2019
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  1. #include<iostream>
  2. #include<math.h>
  3. using namespace std;
  4.  
  5. bool is_Prime(int n){
  6. if (n==0) return false;
  7. if (n==1) return false;
  8. for (int i = 1; i < int(sqrt(n)); i++){
  9. if (n%i==0) return false;
  10. }
  11. return true;
  12. }
  13.  
  14. int gcd(int x,int y){
  15. if (y==0) return x;
  16. return gcd(y,x%y);
  17. }
  18.  
  19. int greatestCommonPrimeDivisor(int a, int b)
  20. {
  21.  
  22.  
  23. }
  24.  
  25.  
  26.  
  27. int main(){
  28. int k,i,index,max;
  29. int p[151];
  30. int a=121;
  31. int b=33;
  32. if (gcd(a,b)==1) return -1;
  33. k = gcd(a,b);
  34. index = 0;
  35. for (i=2;i<=k;i++){
  36. index++;
  37. if (k%11==0 && is_Prime(11)==true){
  38. p[index] = 11;
  39. }
  40. }
  41.  
  42. for (i=0;i<=k+1;i++){
  43. // if (p[i] > max) max = p[i];
  44. cout << p[i];
  45. }
  46. cout << max << endl;
  47. cout << k;
  48.  
  49. // cout << greatestCommonPrimeDivisor(12,18);
  50. }
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