user: What is the c source code of the assembly code below:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  lea    D13(%rip),%r14
  lea    -0x3c(%rbp),%rsi
  push   %r13
  mov    %r14,%rdi
  push   %r12
  push   %rbx
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  call   <scanf@plt>
  movslq -0x3c(%rbp),%rdx
  mov    %rsp,%rsi
  mov    %rdx,%rax
  lea    0xf(,%rdx,4),%rdx
  mov    %rdx,%rcx
  and    $0xfffffffffffff000,%rdx
  sub    %rdx,%rsi
  and    $0xfffffffffffffff0,%rcx
  cmp    %rsi,%rsp
  je     L278
L103:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rsi,%rsp
  jne    L103
L278:
  and    $0xfff,%ecx
  sub    %rcx,%rsp
  test   %rcx,%rcx
  jne    L84
L218:
  mov    %rsp,%rbx
  test   %eax,%eax
  jle    L141
  mov    %rbx,%r13
  xor    %r12d,%r12d
  nopw   0x0(%rax,%rax,1)
L49:
  mov    %r13,%rsi
  mov    %r14,%rdi
  add    $0x1,%r12d
  add    $0x4,%r13
  call   <scanf@plt>
  mov    -0x3c(%rbp),%eax
  cmp    %r12d,%eax
  jg     L49
  mov    $0x61,%r14d
  nopl   0x0(%rax)
L135:
  test   %eax,%eax
  jle    L241
  xor    %r12d,%r12d
  jmp    L146
  nopl   0x0(%rax)
L263:
  add    $0x3,%r12
  cmp    %r12d,-0x3c(%rbp)
  jle    L203
L146:
  mov    (%rbx,%r12,4),%edi
  xor    %r14d,%edi
  call   <ck@plt>
  cmp    $0x1,%eax
  je     L263
  mov    -0x3c(%rbp),%eax
  cmp    %r12d,%eax
  jle    L241
  add    $0x1,%r14d
  cmp    $0x7b,%r14d
  jne    L135
  nopl   0x0(%rax)
L241:
  mov    $0x61,%r12d
  cs nopw 0x0(%rax,%rax,1)
L192:
  cmp    $0x1,%eax
  jle    L5
  mov    $0x1,%r13d
  jmp    L42
  nopl   (%rax)
L175:
  add    $0x3,%r13
  cmp    %r13d,-0x3c(%rbp)
  jle    L34
L42:
  mov    (%rbx,%r13,4),%edi
  xor    %r12d,%edi
  call   <ck@plt>
  cmp    $0x1,%eax
  je     L175
  mov    -0x3c(%rbp),%eax
  cmp    %r13d,%eax
  jle    L5
  add    $0x1,%r12d
  cmp    $0x7b,%r12d
  jne    L192
  nopl   0x0(%rax)
L5:
  mov    $0x61,%r13d
  xchg   %ax,%ax
L245:
  cmp    $0x2,%eax
  jle    L179
  mov    $0x2,%r15d
  jmp    L189
  nopl   (%rax)
L277:
  add    $0x3,%r15
  cmp    %r15d,-0x3c(%rbp)
  jle    L179
L189:
  mov    (%rbx,%r15,4),%edi
  mov    %r15d,-0x44(%rbp)
  xor    %r13d,%edi
  call   <ck@plt>
  cmp    $0x1,%eax
  je     L277
  mov    -0x3c(%rbp),%eax
  cmp    -0x44(%rbp),%eax
  jle    L179
  add    $0x1,%r13d
  cmp    $0x7b,%r13d
  jne    L245
  nopl   0x0(%rax)
L179:
  mov    %r13d,%ecx
  mov    %r12d,%edx
  lea    D5(%rip),%rdi
  mov    %r14d,%esi
  call   <printf@plt>
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L11
  lea    -0x28(%rbp),%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
  nopl   (%rax)
L203:
  mov    -0x3c(%rbp),%eax
  jmp    L241
  nopl   0x0(%rax,%rax,1)
L34:
  mov    -0x3c(%rbp),%eax
  jmp    L5
L84:
  orq    $0x0,-0x8(%rsp,%rcx,1)
  jmp    L218
L141:
  mov    $0x61,%r14d
  jmp    L241
L11:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: data_tag: D13
datatype: string
name: unpack_data
arguments: data_tag: D5
datatype: string

tool: D13: %d

tool: D5: %c%c%c

assistant: ```c
int main() {
  int n, j, i;
  char a, b, c;
  scanf("%d", &n);
  int m[n];
  for (i = 0; i < n; i++)
    scanf("%d", &m[i]);
  for (i = 97; i <= 122; i++) {
    for (j = 0; j < n; j += 3)
      if (ck(m[j] ^ i) != 1)
        break;
    if (j >= n)
      break;
  }
  a = i;
  for (i = 97; i <= 122; i++) {
    for (j = 1; j < n; j += 3)
      if (ck(m[j] ^ i) != 1)
        break;
    if (j >= n)
      break;
  }
  b = i;
  for (i = 97; i <= 122; i++) {
    for (j = 2; j < n; j += 3)
      if (ck(m[j] ^ i) != 1)
        break;
    if (j >= n)
      break;
  }
  c = i;
  printf("%c%c%c", a, b, c);
  return 0;
}
```