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  1. #include<stdio.h>
  2. #include<math.h>
  3. int main(){
  4. int i,x,n,term,sign;
  5. i=1;
  6. term=1;
  7. sign=1;
  8. long long int sum=0;
  9. scanf("%d%d",&x,&n);
  10. while(i<=n){
  11.     sum=sum+sign*pow(x,term);
  12.     term+=2;
  13.     sign=-sign;
  14.     i++;
  15. }
  16. printf("%lld",sum);
  17. return 0;
  18. }
Success #stdin #stdout 0.01s 5288KB
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-9223372036854775808
https://ideone.com/UP93Q2
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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