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  1. #include <stdio.h>
  2. int kaisa(int n)
  3. {
  4.     if(n==1)
  5.         return 5;
  6.     else
  7.         return kaisa(n-1)+6;
  8. }
  9.  
  10. int suretsu(int n)
  11. {
  12.     if(n==1)
  13.         return 2;
  14.     else if(n==2)
  15.         return 7;
  16.     else
  17.         return suretsu(n-1)+kaisa(n-1);
  18. }
  19.  
  20. int main(void) {
  21. 	int n;
  22.     scanf("%d",&n);
  23.     printf("%d\n",suretsu(n));
  24. 	return 0;
  25. }
  26.  
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/461Bip
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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