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  1. #include <inttypes.h>
  2. uint64_t F(x){return x<1 ? 0:x==1 ? 1:F(x-1)+F(x-2);}uint64_t G(H,B){uint64_t P=1;for(B=3;B<=H;B++)P*=F(B);return P;}main(U,Y){scanf("%d %d",&U,&Y);printf("%llu\n",G(U)/(G(U-Y)*G(Y)));}
  3.  
Success #stdin #stdout 0s 2160KB
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14 7
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14169550626
https://ideone.com/nSqk4k
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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