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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4.  
  5. int n,i;
  6. scanf("%d",&n);
  7. for(i=1; i<=n; i++){
  8. n=n+(n+1);
  9.  
  10. }
  11. printf("%d\n",n);
  12. return 0;
  13.  
  14. }
  15.  
Success #stdin #stdout 0s 5576KB
stdin
3
stdout
-1