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  1. #include <iostream>
  2. using namespace std;
  3. int main(){
  4. int a,b;
  5. cin >>a>>b;
  6. if (a<b){
  7. while (a!=b)
  8. b=b-a;
  9. cout <<b;
  10. }
  11. if (a<b){
  12. while (a!=b)
  13. a=a-b;
  14. cout <<a;
  15. }
  16. return 0;
  17. }
Success #stdin #stdout 0s 3460KB
stdin
12 36
stdout
12