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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	// your code goes here
  5. int a,n,i,s=1,sum=0;
  6. scanf("%d",&a);
  7. scanf("%d",&n); 	
  8.  for(i=1;i<=n;i++){
  9.  s=s*a;
  10.  sum=sum+s;}
  11.  printf("%d",sum);
  12. return 0;
  13. }
  14.  
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin 
5
3
stdout 
155
https://ideone.com/dpZzPJ
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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