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  1. #include <stdio.h>
  2. int main(void) {
  3.  int a,n,i,j,s,sum=0;
  4.  scanf("%d",&a);
  5.  scanf("%d",&n);
  6.  for(i=1;i<=n;i++){
  7.   s=1;
  8.    for(j=0;j<=i-1;j++){
  9.    s=s*a;}
  10.    sum=sum+s;}
  11.  printf("%d",sum);
  12.  
  13.  
  14.  
  15. return 0;
  16. }
Success #stdin #stdout 0s 5320KB
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stdin
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5
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stdout
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155
https://ideone.com/bOnV93
language:
C (gcc 8.3)
created:
15 days ago
visibility:
public

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