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

```asm
<main>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0xc90,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0xc88(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rbx
  lea    0xa0(%rsp),%r12
  lea    0xd20(%rsp),%r14
  lea    D28(%rip),%r13
L90:
  lea    -0xa0(%r12),%rbp
L48:
  mov    %rbp,%rsi
  mov    %r13,%rdi
  call   <scanf@plt>
  add    $0x8,%rbp
  cmp    %r12,%rbp
  jne    L48
  add    $0xa0,%r12
  cmp    %r14,%r12
  jne    L90
  mov    $0x0,%ebp
  mov    $0x4,%r10d
  pxor   %xmm0,%xmm0
  mov    $0x0,%r12d
  jmp    L136
L116:
  maxsd  %xmm0,%xmm1
  maxsd  %xmm1,%xmm3
  maxsd  %xmm3,%xmm5
  maxsd  %xmm5,%xmm2
  movapd %xmm2,%xmm0
  add    $0x1,%r11
  add    $0x8,%r9
  cmp    $0x14,%r11
  je     L95
L27:
  mov    %r12,%rax
  mov    %r11,%rdx
  mov    %r9,%rcx
  mov    %r9,%rsi
  mov    %r9,%rdi
  movsd  D3(%rip),%xmm2
  movapd %xmm2,%xmm5
  movapd %xmm2,%xmm3
  movapd %xmm2,%xmm1
  jmp    L106
L95:
  add    $0x1,%r12
  add    $0x1,%r10
  add    $0x2,%rbp
  add    $0xa0,%rbx
  cmp    $0x14,%r12
  je     L51
L136:
  mov    %rbx,%r9
  mov    $0x0,%r11d
  jmp    L27
L51:
  lea    D2(%rip),%rdi
  call   <printf@plt>
  mov    0xc88(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L144
  mov    $0x0,%eax
  add    $0xc90,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L159:
  pxor   %xmm4,%xmm4
  cvtsi2sdq (%rbx,%rdx,8),%xmm4
  mulsd  %xmm4,%xmm3
  jmp    L42
L154:
  cmp    $0x13,%rdx
  jle    L159
L151:
  add    $0x1,%rax
  sub    $0x98,%rdi
  add    $0xa8,%rsi
  add    $0x1,%rdx
  add    $0xa0,%rcx
  cmp    %r10,%rax
  je     L116
L106:
  cmp    $0x13,%rax
  jg     L154
  pxor   %xmm4,%xmm4
  cvtsi2sdq (%rcx),%xmm4
  mulsd  %xmm4,%xmm1
  cmp    $0x13,%rdx
  jg     L151
  pxor   %xmm4,%xmm4
  cvtsi2sdq (%rbx,%rdx,8),%xmm4
  mulsd  %xmm4,%xmm3
  cmp    $0x13,%rax
  jg     L42
  pxor   %xmm4,%xmm4
  cvtsi2sdq (%rsi),%xmm4
  mulsd  %xmm4,%xmm5
L42:
  cmp    %rax,%rbp
  js     L151
  pxor   %xmm4,%xmm4
  cvtsi2sdq (%rdi),%xmm4
  mulsd  %xmm4,%xmm2
  jmp    L151
L144:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: tag: D28
data_type: string
name: read_data
arguments: tag: D3
data_type: f32[2]
name: read_data
arguments: tag: D2
data_type: string

tool: D28: %Ld

tool: {"D3": [0.0,1.875]}

tool: D2: %.0lf

assistant: ```c
int main() {
  long long i, j, k;
  double s1, s2, s3, s4, max = 0;
  long long a[20][20];
  for (i = 0; i < 20; i++)
    for (j = 0; j < 20; j++)
      scanf("%Ld", &a[i][j]);
  for (i = 0; i < 20; i++) {
    for (j = 0; j < 20; j++) {
      k = 0;
      s1 = s2 = s3 = s4 = 1;
      while (1) {
        if (i + k < 20)
          s1 *= a[i + k][j];
        if (j + k < 20)
          s2 *= a[i][j + k];
        if (i + k < 20 && j + k < 20)
          s3 *= a[i + k][j + k];
        if (i - k >= 0 && j + k < 20)
          s4 *= a[i - k][j + k];
        k++;
        if (k == 4)
          break;
      }
      if (s1 > max)
        max = s1;
      if (s2 > max)
        max = s2;
      if (s3 > max)
        max = s3;
      if (s4 > max)
        max = s4;
    }
  }
  printf("%.0lf", max);
  return 0;
}
```