user: 请从给定的汇编指令推导出C源代码：

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0xd0,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x1f,-0xb0(%rbp)
  movl   $0x1c,-0xac(%rbp)
  movl   $0x1f,-0xa8(%rbp)
  movl   $0x1e,-0xa4(%rbp)
  movl   $0x1f,-0xa0(%rbp)
  movl   $0x1e,-0x9c(%rbp)
  movl   $0x1f,-0x98(%rbp)
  movl   $0x1f,-0x94(%rbp)
  movl   $0x1e,-0x90(%rbp)
  movl   $0x1f,-0x8c(%rbp)
  movl   $0x1e,-0x88(%rbp)
  movl   $0x1f,-0x84(%rbp)
  movl   $0x0,-0xb4(%rbp)
  lea    D13(%rip),%rax
  mov    %rax,%rdi
  call   <system@plt>
  lea    -0x80(%rbp),%rax
  lea    D27(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  lea    -0x80(%rbp),%rax
  add    $0xf,%rax
  lea    D5(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  lea    -0x80(%rbp),%rax
  add    $0x1e,%rax
  lea    D96(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  lea    -0x80(%rbp),%rax
  add    $0x2d,%rax
  lea    D79(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  lea    -0x80(%rbp),%rax
  add    $0x3c,%rax
  lea    D77(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  lea    -0x80(%rbp),%rax
  add    $0x4b,%rax
  lea    D1(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  lea    -0x80(%rbp),%rax
  add    $0x5a,%rax
  lea    D22(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  lea    D67(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0xbc(%rbp),%rcx
  lea    -0xc0(%rbp),%rdx
  lea    -0xc4(%rbp),%rax
  mov    %rax,%rsi
  lea    D30(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  mov    -0xbc(%rbp),%eax
  and    $0x3,%eax
  test   %eax,%eax
  jne    L35
  mov    -0xbc(%rbp),%edx
  movslq %edx,%rax
  imul   $0x51eb851f,%rax,%rax
  shr    $0x20,%rax
  sar    $0x5,%eax
  mov    %edx,%ecx
  sar    $0x1f,%ecx
  sub    %ecx,%eax
  imul   $0x64,%eax,%ecx
  mov    %edx,%eax
  sub    %ecx,%eax
  test   %eax,%eax
  jne    L35
  mov    -0xbc(%rbp),%edx
  movslq %edx,%rax
  imul   $0x51eb851f,%rax,%rax
  shr    $0x20,%rax
  sar    $0x7,%eax
  mov    %edx,%ecx
  sar    $0x1f,%ecx
  sub    %ecx,%eax
  imul   $0x190,%eax,%ecx
  mov    %edx,%eax
  sub    %ecx,%eax
  test   %eax,%eax
  jne    L35
  movl   $0x1d,-0xac(%rbp)
L35:
  movl   $0x0,-0xb8(%rbp)
  jmp    L18
L28:
  mov    -0xb8(%rbp),%eax
  cltq
  mov    -0xb0(%rbp,%rax,4),%eax
  add    %eax,-0xb4(%rbp)
  addl   $0x1,-0xb8(%rbp)
L18:
  mov    -0xc0(%rbp),%eax
  sub    $0x1,%eax
  cmp    %eax,-0xb8(%rbp)
  jl     L28
  mov    -0xc4(%rbp),%edx
  mov    -0xbc(%rbp),%eax
  lea    (%rdx,%rax,1),%ecx
  mov    -0xbc(%rbp),%eax
  lea    0x3(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x2,%eax
  add    %ecx,%eax
  sub    $0x2,%eax
  add    %eax,-0xb4(%rbp)
  mov    -0xb4(%rbp),%eax
  movslq %eax,%rdx
  imul   $0xffffffff92492493,%rdx,%rdx
  shr    $0x20,%rdx
  add    %eax,%edx
  sar    $0x2,%edx
  mov    %eax,%esi
  sar    $0x1f,%esi
  mov    %edx,%ecx
  sub    %esi,%ecx
  mov    %ecx,%edx
  shl    $0x3,%edx
  sub    %ecx,%edx
  sub    %edx,%eax
  mov    %eax,-0xb4(%rbp)
  lea    -0x80(%rbp),%rcx
  mov    -0xb4(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  shl    $0x4,%rax
  sub    %rdx,%rax
  add    %rcx,%rax
  mov    %rax,%rsi
  lea    D46(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L23
  call   <__stack_chk_fail@plt>
L23:
  leave
  ret
```

tool_calls: name: disassemble_data
arguments: label: D13
type: string
name: disassemble_data
arguments: label: D27
type: string
name: disassemble_data
arguments: label: D5
type: string
name: disassemble_data
arguments: label: D96
type: string
name: disassemble_data
arguments: label: D79
type: string
name: disassemble_data
arguments: label: D77
type: string
name: disassemble_data
arguments: label: D1
type: string
name: disassemble_data
arguments: label: D22
type: string
name: disassemble_data
arguments: label: D67
type: string
name: disassemble_data
arguments: label: D30
type: string
name: disassemble_data
arguments: label: D46
type: string

tool: D13: clear

tool: D27: Sunday

tool: D5: Monday

tool: D96: Tuesday

tool: D79: Wednesday

tool: D77: Thursday

tool: D1: Friday

tool: D22: Saturday

tool: D67: Enter a valid date (dd/mm/yyyy) : 

tool: D30: %d / %d / %d

tool: D46: 
The day is : %s

assistant: ```c
int main() {
  int month[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
  char week[7][15];
  int date, mon, year, i, r, s = 0;
  system("clear");
  strcpy(week[0], "Sunday");
  strcpy(week[1], "Monday");
  strcpy(week[2], "Tuesday");
  strcpy(week[3], "Wednesday");
  strcpy(week[4], "Thursday");
  strcpy(week[5], "Friday");
  strcpy(week[6], "Saturday");
  printf("Enter a valid date (dd/mm/yyyy) : ");
  scanf("%d / %d / %d", &date, &mon, &year);
  if (year % 4 == 0) {
    if (year % 100 == 0) {
      if (year % 400 == 0) {
        month[1] = 29;
      }
    }
  }
  for (i = 0; i < mon - 1; i++)
    s = s + month[i];
  s = s + (date + year + (year / 4) - 2);
  s = s % 7;
  printf("\nThe day is : %s", week[s]);
}
```