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  1. #include <stdio.h>
  2. int kaisa(int n)
  3. {
  4.     return 5+6*(n-1);
  5. }
  6.  
  7. int suretsu(int n)
  8. {
  9.     if(n==1)
  10.         return 2;
  11.     else if(n==2)
  12.         return 7;
  13.     else
  14.         return suretsu(n-1)+kaisa(n-1);
  15. }
  16.  
  17. int main(void) {
  18. 	int n;
  19.     scanf("%d",&n);
  20.     printf("%d\n",suretsu(n));
  21. 	return 0;
  22. }
  23.  
Success #stdin #stdout 0s 5288KB
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6
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87
https://ideone.com/mBKoTS
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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