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Apr 26th, 2018
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  1. #include <iostream>
  2.  
  3. int main() {
  4. int N, b[10], min=1000, f, x;
  5. scanf("%d", &N);
  6. int a[N];
  7. for(int i=0;i<10;i++){
  8. b[i]=0;
  9. }
  10. for(int i=0;i<N;i++){
  11. scanf("%d", &a[i]);
  12. }
  13. for(int i=0;i<N;i++){
  14. while(a[i]>0){
  15. f=a[i]%10;
  16. a[i]=a[i]/10;
  17. }
  18. b[f]=b[f]+1;
  19. }
  20. for(int i=0;i<10;i++){
  21. if((b[i]<min)&&(b[i]!=0)){
  22. min=b[i];
  23. }
  24. }
  25. for(int i=0;i<10;i++){
  26. if((b[i]==min)&&(min!=x)){
  27. x=min;
  28. printf("%d", i);
  29. }
  30. }
  31. }
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