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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int a=3;
  5. do{a=a*2-1;
  6. }
  7. while(a<=10000);
  8.  
  9. printf("%d",a);
  10. return 0;
  11. }
  12.  
Success #stdin #stdout 0s 5316KB
stdin
Standard input is empty
stdout
16385