user: 请从给定的汇编指令推导出C源代码:

```asm
<catalan>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x88,%rsp
  mov    %edi,0x7c(%rsp)
  movq   $0x1,0x70(%rsp)
  cmp    $0x1,%edi
  jle    L901
  mov    %edi,%eax
  movq   $0x0,0x70(%rsp)
  sub    $0x1,%eax
  movl   $0x0,0x60(%rsp)
  mov    %eax,0x78(%rsp)
  movq   $0x1,0x58(%rsp)
L459:
  mov    0x78(%rsp),%eax
  cmp    $0x1,%eax
  jle    L155
  sub    $0x1,%eax
  movq   $0x0,0x68(%rsp)
  mov    %eax,0x48(%rsp)
  mov    0x48(%rsp),%eax
  movl   $0x0,0x4c(%rsp)
  movq   $0x1,0x40(%rsp)
  cmp    $0x1,%eax
  jle    L844
L322:
  sub    $0x1,%eax
  movq   $0x0,0x50(%rsp)
  mov    %eax,0x64(%rsp)
  mov    %eax,0x38(%rsp)
  movl   $0x0,0x30(%rsp)
  movq   $0x1,0x20(%rsp)
L868:
  mov    0x38(%rsp),%eax
  cmp    $0x1,%eax
  jle    L708
  movq   $0x0,0x8(%rsp)
  lea    -0x1(%rax),%r12d
  xor    %r13d,%r13d
  mov    $0x1,%ebp
L607:
  cmp    $0x1,%r12d
  jle    L1026
L954:
  sub    $0x1,%r12d
  xor    %r14d,%r14d
  mov    %r12d,%r15d
L521:
  mov    %r12d,%edi
  sub    %r15d,%edi
  call   <catalan>
  mov    %r15d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%r14
  sub    $0x1,%r15d
  jae    L521
  mov    %r14,%rdx
  add    $0x1,%r13d
  imul   %rbp,%rdx
  add    %rdx,0x8(%rsp)
L274:
  cmp    $0x1,%r13d
  je     L739
  xor    %ebp,%ebp
  xor    %r14d,%r14d
  lea    -0x1(%r13),%r15d
L135:
  mov    %r14d,%edi
  call   <catalan>
  mov    %r15d,%edi
  sub    %r14d,%edi
  mov    %rax,%rbx
  add    $0x1,%r14d
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%rbp
  cmp    %r14d,%r13d
  jne    L135
  cmp    $0x1,%r12d
  jg     L954
L1026:
  add    %rbp,0x8(%rsp)
  add    $0x1,%r13d
  test   %r12d,%r12d
  jne    L213
  mov    0x20(%rsp),%rax
  imul   0x8(%rsp),%rax
  mov    %rax,0x20(%rsp)
L708:
  mov    0x30(%rsp),%eax
  mov    0x20(%rsp),%rcx
  add    %rcx,0x50(%rsp)
  add    $0x1,%eax
  mov    %eax,0x34(%rsp)
  cmp    %eax,0x48(%rsp)
  je     L532
  cmpl   $0x1,0x34(%rsp)
  jle    L333
  mov    0x30(%rsp),%eax
  movl   $0x0,0x10(%rsp)
  movq   $0x0,0x20(%rsp)
  mov    %eax,0x2c(%rsp)
  movq   $0x1,0x8(%rsp)
L483:
  mov    0x2c(%rsp),%eax
  cmp    $0x1,%eax
  jle    L290
  lea    -0x1(%rax),%ebp
  xor    %r13d,%r13d
  mov    %ebp,%r12d
L967:
  mov    %ebp,%edi
  sub    %r12d,%edi
  call   <catalan>
  mov    %r12d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%r13
  sub    $0x1,%r12d
  jae    L967
  imul   0x8(%rsp),%r13
  mov    %r13,0x8(%rsp)
L290:
  mov    0x10(%rsp),%eax
  mov    0x8(%rsp),%rcx
  add    %rcx,0x20(%rsp)
  lea    0x1(%rax),%esi
  mov    %esi,0x28(%rsp)
  cmp    %eax,0x30(%rsp)
  je     L886
  cmpl   $0x1,0x28(%rsp)
  jle    L814
  mov    0x10(%rsp),%eax
  xor    %r12d,%r12d
  mov    $0x1,%ebp
  movq   $0x0,0x8(%rsp)
  mov    %eax,0x1c(%rsp)
L752:
  mov    0x1c(%rsp),%eax
  cmp    $0x1,%eax
  jle    L398
  lea    -0x1(%rax),%r15d
  xor    %r14d,%r14d
  mov    %r15d,%r13d
L186:
  mov    %r15d,%edi
  sub    %r13d,%edi
  call   <catalan>
  mov    %r13d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%r14
  sub    $0x1,%r13d
  jae    L186
  imul   %r14,%rbp
L398:
  add    %rbp,0x8(%rsp)
  lea    0x1(%r12),%r15d
  cmp    %r12d,0x10(%rsp)
  je     L538
  cmp    $0x1,%r15d
  jle    L639
  xor    %ebp,%ebp
  xor    %r13d,%r13d
L15:
  mov    %r13d,%edi
  call   <catalan>
  mov    %r12d,%edi
  sub    %r13d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  mov    %r13d,%eax
  add    $0x1,%r13d
  add    %rbx,%rbp
  cmp    %r12d,%eax
  jne    L15
  subl   $0x1,0x1c(%rsp)
  mov    %r15d,%r12d
  jmp    L752
L814:
  movq   $0x1,0x8(%rsp)
  nopl   0x0(%rax,%rax,1)
L538:
  mov    0x28(%rsp),%eax
  subl   $0x1,0x2c(%rsp)
  mov    %eax,0x10(%rsp)
  jmp    L483
L333:
  movq   $0x1,0x20(%rsp)
  nopl   0x0(%rax,%rax,1)
L886:
  mov    0x34(%rsp),%eax
  subl   $0x1,0x38(%rsp)
  mov    %eax,0x30(%rsp)
  jmp    L868
  nopw   0x0(%rax,%rax,1)
L639:
  subl   $0x1,0x1c(%rsp)
  mov    $0x1,%ebp
  mov    %r15d,%r12d
  jmp    L752
  nopw   0x0(%rax,%rax,1)
L532:
  mov    0x50(%rsp),%rax
  addl   $0x1,0x4c(%rsp)
  imul   0x40(%rsp),%rax
  add    %rax,0x68(%rsp)
L753:
  mov    0x4c(%rsp),%eax
  cmp    $0x1,%eax
  je     L905
  sub    $0x1,%eax
  movq   $0x0,0x40(%rsp)
  mov    %eax,0x34(%rsp)
  movl   $0x0,0x2c(%rsp)
  movq   $0x1,0x20(%rsp)
L118:
  mov    0x34(%rsp),%eax
  cmp    $0x1,%eax
  jle    L28
  sub    $0x1,%eax
  movq   $0x0,0x38(%rsp)
  mov    %eax,0x30(%rsp)
  movl   $0x0,0x1c(%rsp)
  movq   $0x1,0x8(%rsp)
L146:
  mov    0x30(%rsp),%eax
  cmp    $0x1,%eax
  jle    L36
  movq   $0x0,0x10(%rsp)
  lea    -0x1(%rax),%r12d
  xor    %r13d,%r13d
  mov    $0x1,%ebp
L1022:
  cmp    $0x1,%r12d
  jle    L719
L179:
  sub    $0x1,%r12d
  xor    %r14d,%r14d
  mov    %r12d,%r15d
L217:
  mov    %r12d,%edi
  sub    %r15d,%edi
  call   <catalan>
  mov    %r15d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%r14
  sub    $0x1,%r15d
  jae    L217
  mov    %r14,%rdx
  add    $0x1,%r13d
  imul   %rbp,%rdx
  add    %rdx,0x10(%rsp)
L141:
  cmp    $0x1,%r13d
  je     L902
  xor    %ebp,%ebp
  xor    %r14d,%r14d
  lea    -0x1(%r13),%r15d
L714:
  mov    %r14d,%edi
  call   <catalan>
  mov    %r15d,%edi
  sub    %r14d,%edi
  mov    %rax,%rbx
  add    $0x1,%r14d
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%rbp
  cmp    %r13d,%r14d
  jne    L714
  cmp    $0x1,%r12d
  jg     L179
L719:
  add    %rbp,0x10(%rsp)
  add    $0x1,%r13d
  test   %r12d,%r12d
  jne    L907
  mov    0x8(%rsp),%rax
  imul   0x10(%rsp),%rax
  mov    %rax,0x8(%rsp)
L36:
  mov    0x1c(%rsp),%eax
  mov    0x8(%rsp),%rcx
  add    %rcx,0x38(%rsp)
  add    $0x1,%eax
  mov    %eax,0x28(%rsp)
  cmp    %eax,0x34(%rsp)
  je     L508
  cmpl   $0x1,0x28(%rsp)
  jle    L646
  mov    0x1c(%rsp),%eax
  xor    %r12d,%r12d
  mov    $0x1,%ebp
  movq   $0x0,0x8(%rsp)
  mov    %eax,0x10(%rsp)
L263:
  mov    0x10(%rsp),%eax
  cmp    $0x1,%eax
  jle    L334
  lea    -0x1(%rax),%r15d
  xor    %r14d,%r14d
  mov    %r15d,%r13d
L59:
  mov    %r15d,%edi
  sub    %r13d,%edi
  call   <catalan>
  mov    %r13d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%r14
  sub    $0x1,%r13d
  jae    L59
  imul   %r14,%rbp
L334:
  add    %rbp,0x8(%rsp)
  lea    0x1(%r12),%r15d
  cmp    %r12d,0x1c(%rsp)
  je     L775
  cmp    $0x1,%r15d
  jle    L949
  xor    %ebp,%ebp
  xor    %r13d,%r13d
L463:
  mov    %r13d,%edi
  call   <catalan>
  mov    %r12d,%edi
  sub    %r13d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  mov    %r13d,%eax
  add    $0x1,%r13d
  add    %rbx,%rbp
  cmp    %r12d,%eax
  jne    L463
  subl   $0x1,0x10(%rsp)
  mov    %r15d,%r12d
  jmp    L263
L646:
  movq   $0x1,0x8(%rsp)
  nopl   0x0(%rax,%rax,1)
L775:
  mov    0x28(%rsp),%eax
  subl   $0x1,0x30(%rsp)
  mov    %eax,0x1c(%rsp)
  jmp    L146
  nopw   0x0(%rax,%rax,1)
L508:
  mov    0x20(%rsp),%rax
  imul   0x38(%rsp),%rax
  mov    %rax,0x20(%rsp)
L28:
  mov    0x2c(%rsp),%eax
  mov    0x20(%rsp),%rcx
  add    %rcx,0x40(%rsp)
  add    $0x1,%eax
  mov    %eax,0x10(%rsp)
  cmp    0x4c(%rsp),%eax
  je     L513
  cmpl   $0x1,0x10(%rsp)
  jle    L664
  mov    0x2c(%rsp),%eax
  xor    %r12d,%r12d
  mov    $0x1,%ebp
  movq   $0x0,0x20(%rsp)
  mov    %eax,0x8(%rsp)
L61:
  mov    0x8(%rsp),%eax
  cmp    $0x1,%eax
  jle    L1023
  lea    -0x1(%rax),%r15d
  xor    %r14d,%r14d
  mov    %r15d,%r13d
L930:
  mov    %r15d,%edi
  sub    %r13d,%edi
  call   <catalan>
  mov    %r13d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%r14
  sub    $0x1,%r13d
  jae    L930
  imul   %r14,%rbp
L1023:
  add    %rbp,0x20(%rsp)
  lea    0x1(%r12),%r15d
  cmp    %r12d,0x2c(%rsp)
  je     L614
  cmp    $0x1,%r15d
  jle    L589
  xor    %ebp,%ebp
  xor    %r13d,%r13d
L280:
  mov    %r13d,%edi
  call   <catalan>
  mov    %r12d,%edi
  sub    %r13d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  mov    %r13d,%eax
  add    $0x1,%r13d
  add    %rbx,%rbp
  cmp    %r12d,%eax
  jne    L280
  subl   $0x1,0x8(%rsp)
  mov    %r15d,%r12d
  jmp    L61
L664:
  movq   $0x1,0x20(%rsp)
  nopl   0x0(%rax)
L614:
  mov    0x10(%rsp),%eax
  subl   $0x1,0x34(%rsp)
  mov    %eax,0x2c(%rsp)
  jmp    L118
  nopw   0x0(%rax,%rax,1)
L949:
  subl   $0x1,0x10(%rsp)
  mov    $0x1,%ebp
  mov    %r15d,%r12d
  jmp    L263
L905:
  movq   $0x1,0x40(%rsp)
L513:
  mov    0x64(%rsp),%eax
  mov    %eax,0x48(%rsp)
  mov    0x48(%rsp),%eax
  cmp    $0x1,%eax
  jg     L322
L844:
  mov    0x48(%rsp),%eax
  mov    0x40(%rsp),%rsi
  addl   $0x1,0x4c(%rsp)
  add    %rsi,0x68(%rsp)
  test   %eax,%eax
  jne    L857
  mov    0x58(%rsp),%rax
  imul   0x68(%rsp),%rax
  mov    %rax,0x58(%rsp)
L155:
  mov    0x60(%rsp),%eax
  mov    0x58(%rsp),%rcx
  add    %rcx,0x70(%rsp)
  add    $0x1,%eax
  mov    %eax,0x48(%rsp)
  cmp    %eax,0x7c(%rsp)
  je     L901
  cmpl   $0x1,0x48(%rsp)
  jle    L818
  mov    0x60(%rsp),%eax
  movq   $0x0,0x58(%rsp)
  movl   $0x0,0x30(%rsp)
  mov    %eax,0x34(%rsp)
  movq   $0x1,0x20(%rsp)
L44:
  mov    0x34(%rsp),%eax
  cmp    $0x1,%eax
  jle    L568
  sub    $0x1,%eax
  movq   $0x0,0x38(%rsp)
  mov    %eax,0x2c(%rsp)
  movl   $0x0,0x1c(%rsp)
  movq   $0x1,0x8(%rsp)
L1038:
  mov    0x2c(%rsp),%eax
  cmp    $0x1,%eax
  jle    L974
  movq   $0x0,0x10(%rsp)
  lea    -0x1(%rax),%r12d
  xor    %r13d,%r13d
  mov    $0x1,%ebp
L292:
  cmp    $0x1,%r12d
  jle    L1028
L729:
  sub    $0x1,%r12d
  xor    %r14d,%r14d
  mov    %r12d,%r15d
L1057:
  mov    %r12d,%edi
  sub    %r15d,%edi
  call   <catalan>
  mov    %r15d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%r14
  sub    $0x1,%r15d
  jae    L1057
  mov    %r14,%rdx
  add    $0x1,%r13d
  imul   %rbp,%rdx
  add    %rdx,0x10(%rsp)
L495:
  cmp    $0x1,%r13d
  je     L592
  xor    %ebp,%ebp
  xor    %r14d,%r14d
  lea    -0x1(%r13),%r15d
L1006:
  mov    %r14d,%edi
  call   <catalan>
  mov    %r15d,%edi
  sub    %r14d,%edi
  mov    %rax,%rbx
  add    $0x1,%r14d
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%rbp
  cmp    %r13d,%r14d
  jne    L1006
  cmp    $0x1,%r12d
  jg     L729
L1028:
  add    %rbp,0x10(%rsp)
  add    $0x1,%r13d
  test   %r12d,%r12d
  jne    L776
  mov    0x8(%rsp),%rax
  imul   0x10(%rsp),%rax
  mov    %rax,0x8(%rsp)
L974:
  mov    0x1c(%rsp),%eax
  mov    0x8(%rsp),%rcx
  add    %rcx,0x38(%rsp)
  add    $0x1,%eax
  mov    %eax,0x28(%rsp)
  cmp    %eax,0x34(%rsp)
  je     L188
  cmpl   $0x1,0x28(%rsp)
  jle    L289
  mov    0x1c(%rsp),%eax
  xor    %r12d,%r12d
  mov    $0x1,%ebp
  movq   $0x0,0x8(%rsp)
  mov    %eax,0x10(%rsp)
L726:
  mov    0x10(%rsp),%eax
  cmp    $0x1,%eax
  jle    L799
  lea    -0x1(%rax),%r15d
  xor    %r14d,%r14d
  mov    %r15d,%r13d
L293:
  mov    %r15d,%edi
  sub    %r13d,%edi
  call   <catalan>
  mov    %r13d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%r14
  sub    $0x1,%r13d
  jae    L293
  imul   %r14,%rbp
L799:
  add    %rbp,0x8(%rsp)
  lea    0x1(%r12),%r15d
  cmp    %r12d,0x1c(%rsp)
  je     L316
  cmp    $0x1,%r15d
  jle    L1004
  xor    %ebp,%ebp
  xor    %r13d,%r13d
L1040:
  mov    %r13d,%edi
  call   <catalan>
  mov    %r12d,%edi
  sub    %r13d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  mov    %r13d,%eax
  add    $0x1,%r13d
  add    %rbx,%rbp
  cmp    %r12d,%eax
  jne    L1040
  subl   $0x1,0x10(%rsp)
  mov    %r15d,%r12d
  jmp    L726
L289:
  movq   $0x1,0x8(%rsp)
  nop
L316:
  mov    0x28(%rsp),%eax
  subl   $0x1,0x2c(%rsp)
  mov    %eax,0x1c(%rsp)
  jmp    L1038
  nopw   0x0(%rax,%rax,1)
L188:
  mov    0x20(%rsp),%rax
  imul   0x38(%rsp),%rax
  mov    %rax,0x20(%rsp)
L568:
  mov    0x30(%rsp),%eax
  mov    0x20(%rsp),%rsi
  add    %rsi,0x58(%rsp)
  lea    0x1(%rax),%ecx
  mov    %ecx,0x38(%rsp)
  cmp    %eax,0x60(%rsp)
  je     L367
  cmpl   $0x1,0x38(%rsp)
  jle    L944
  mov    0x30(%rsp),%eax
  movl   $0x0,0x1c(%rsp)
  movq   $0x0,0x20(%rsp)
  mov    %eax,0x2c(%rsp)
  movq   $0x1,0x8(%rsp)
L684:
  mov    0x2c(%rsp),%eax
  cmp    $0x1,%eax
  jle    L841
  movq   $0x0,0x10(%rsp)
  lea    -0x1(%rax),%r12d
  xor    %r13d,%r13d
  mov    $0x1,%ebp
L69:
  cmp    $0x1,%r12d
  jle    L76
L232:
  sub    $0x1,%r12d
  xor    %r14d,%r14d
  mov    %r12d,%r15d
L415:
  mov    %r12d,%edi
  sub    %r15d,%edi
  call   <catalan>
  mov    %r15d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%r14
  sub    $0x1,%r15d
  jae    L415
  mov    %r14,%rdx
  add    $0x1,%r13d
  imul   %rbp,%rdx
  add    %rdx,0x10(%rsp)
L260:
  cmp    $0x1,%r13d
  je     L90
  xor    %ebp,%ebp
  xor    %r14d,%r14d
  lea    -0x1(%r13),%r15d
L368:
  mov    %r14d,%edi
  call   <catalan>
  mov    %r15d,%edi
  sub    %r14d,%edi
  mov    %rax,%rbx
  add    $0x1,%r14d
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%rbp
  cmp    %r13d,%r14d
  jne    L368
  cmp    $0x1,%r12d
  jg     L232
L76:
  add    %rbp,0x10(%rsp)
  add    $0x1,%r13d
  test   %r12d,%r12d
  jne    L413
  mov    0x8(%rsp),%rax
  imul   0x10(%rsp),%rax
  mov    %rax,0x8(%rsp)
L841:
  mov    0x1c(%rsp),%eax
  mov    0x8(%rsp),%rsi
  add    %rsi,0x20(%rsp)
  lea    0x1(%rax),%ecx
  mov    %ecx,0x28(%rsp)
  cmp    %eax,0x30(%rsp)
  je     L431
  cmpl   $0x1,0x28(%rsp)
  jle    L261
  mov    0x1c(%rsp),%eax
  xor    %r12d,%r12d
  mov    $0x1,%ebp
  movq   $0x0,0x8(%rsp)
  mov    %eax,0x10(%rsp)
L673:
  mov    0x10(%rsp),%eax
  cmp    $0x1,%eax
  jle    L519
  lea    -0x1(%rax),%r15d
  xor    %r14d,%r14d
  mov    %r15d,%r13d
L1059:
  mov    %r15d,%edi
  sub    %r13d,%edi
  call   <catalan>
  mov    %r13d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  add    %rbx,%r14
  sub    $0x1,%r13d
  jae    L1059
  imul   %r14,%rbp
L519:
  add    %rbp,0x8(%rsp)
  lea    0x1(%r12),%r15d
  cmp    0x1c(%rsp),%r12d
  je     L212
  cmp    $0x1,%r15d
  jle    L429
  xor    %ebp,%ebp
  xor    %r13d,%r13d
L599:
  mov    %r13d,%edi
  call   <catalan>
  mov    %r12d,%edi
  sub    %r13d,%edi
  mov    %rax,%rbx
  call   <catalan>
  imul   %rax,%rbx
  mov    %r13d,%eax
  add    $0x1,%r13d
  add    %rbx,%rbp
  cmp    %r12d,%eax
  jne    L599
  subl   $0x1,0x10(%rsp)
  mov    %r15d,%r12d
  jmp    L673
L261:
  movq   $0x1,0x8(%rsp)
  cs nopw 0x0(%rax,%rax,1)
L212:
  mov    0x28(%rsp),%eax
  subl   $0x1,0x2c(%rsp)
  mov    %eax,0x1c(%rsp)
  jmp    L684
L944:
  movq   $0x1,0x20(%rsp)
  nopl   0x0(%rax,%rax,1)
L431:
  mov    0x38(%rsp),%eax
  subl   $0x1,0x34(%rsp)
  mov    %eax,0x30(%rsp)
  jmp    L44
L1004:
  subl   $0x1,0x10(%rsp)
  mov    $0x1,%ebp
  mov    %r15d,%r12d
  jmp    L726
L429:
  subl   $0x1,0x10(%rsp)
  mov    $0x1,%ebp
  mov    %r15d,%r12d
  jmp    L673
L589:
  subl   $0x1,0x8(%rsp)
  mov    $0x1,%ebp
  mov    %r15d,%r12d
  jmp    L61
L818:
  movq   $0x1,0x58(%rsp)
L367:
  mov    0x48(%rsp),%eax
  subl   $0x1,0x78(%rsp)
  mov    %eax,0x60(%rsp)
  jmp    L459
L901:
  mov    0x70(%rsp),%rax
  add    $0x88,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L776:
  sub    $0x1,%r12d
  jmp    L495
L592:
  mov    $0x1,%ebp
  jmp    L292
L907:
  sub    $0x1,%r12d
  jmp    L141
L902:
  mov    $0x1,%ebp
  jmp    L1022
L213:
  sub    $0x1,%r12d
  jmp    L274
L739:
  mov    $0x1,%ebp
  jmp    L607
L857:
  mov    0x48(%rsp),%eax
  sub    $0x1,%eax
  mov    %eax,0x64(%rsp)
  jmp    L753
L413:
  sub    $0x1,%r12d
  jmp    L260
L90:
  mov    $0x1,%ebp
  jmp    L69
```

assistant: ```c
long int catalan(int n) {
  int i;
  long int res = 0;
  if (n <= 1)
    return 1;
  for (i = 0; i < n; i++)
    res += catalan(i) * catalan(n - i - 1);
  return res;
}
```