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  1. #include <stdio.h>
  2. int fuga(int x,int y){
  3. int i,a=1,sum=1;
  4. for(i=1;i<=y;i++){
  5. a=a*x;
  6. sum=sum+a;
  7. }
  8. return sum;
  9. }
  10. int main(void) {
  11. // your code goes here
  12. printf("%d",fuga(2,4));
  13. return 0;
  14. }
  15.  
Success #stdin #stdout 0.01s 5272KB
stdin
Standard input is empty
stdout
31