user: What would the C source look like for the assembly code provided here?

```asm
<main>:
  endbr64
  push   %r14
  lea    D19(%rip),%rsi
  mov    $0xc8,%ecx
  push   %r13
  push   %r12
  push   %rbp
  xor    %ebp,%ebp
  push   %rbx
  sub    $0x650,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x648(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rdi
  mov    %rsp,%r12
  lea    0x640(%rsp),%r13
  rep movsq %ds:(%rsi),%es:(%rdi)
  xor    %esi,%esi
  nopw   0x0(%rax,%rax,1)
L50:
  mov    %r12,%rcx
  add    $0x50,%r12
  xor    %eax,%eax
  lea    0xa0(%rcx),%r10
  lea    0xf0(%rcx),%r9
  mov    %r12,%r8
  jmp    L77
  nopl   0x0(%rax)
L59:
  mov    (%r8),%eax
  mov    (%r9),%edi
  imul   %edx,%eax
  imul   0x4(%r8),%edx
  imul   (%r10),%eax
  imul   %r14d,%edx
  imul   %edi,%eax
  imul   0xc(%r9),%edx
  cmp    %edx,%eax
  cmovl  %edx,%eax
  imul   0x4(%r10),%edi
  imul   0x8(%r8),%edi
  imul   %ebx,%edi
  cmp    %edi,%eax
  cmovl  %edi,%eax
  cmp    %eax,%esi
  cmovl  %eax,%esi
L60:
  add    $0x4,%rcx
  add    $0x4,%r8
  add    $0x4,%r10
  add    $0x4,%r9
  mov    %r11d,%eax
L77:
  lea    0x1(%rax),%r11d
  cmp    $0x10,%eax
  ja     L2
  mov    (%rcx),%edx
  mov    0x4(%rcx),%eax
  mov    0x8(%rcx),%r14d
  mov    0xc(%rcx),%ebx
  imul   %edx,%eax
  imul   %r14d,%eax
  imul   %ebx,%eax
  cmp    %eax,%esi
  cmovl  %eax,%esi
  cmp    $0x10,%rbp
  jbe    L59
L69:
  cmp    $0x14,%r11d
  jne    L60
L81:
  add    $0x1,%rbp
  cmp    %r12,%r13
  jne    L50
  xor    %eax,%eax
  lea    D5(%rip),%rdi
  call   <printf@plt>
  mov    0x648(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L13
  add    $0x650,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   (%rax)
L2:
  cmp    $0x10,%rbp
  ja     L69
  mov    (%rcx),%eax
  imul   (%r8),%eax
  imul   (%r10),%eax
  imul   (%r9),%eax
  cmp    %eax,%esi
  cmovl  %eax,%esi
  cmp    $0x14,%r11d
  jne    L60
  jmp    L81
L13:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: data_tag: D19
data_type: string
name: disassemble_data
arguments: data_tag: D5
data_type: string

tool: D19: 

tool: D5: %d


assistant: ```c
int main(int argc, char **argv) {
  int grid[20][20] = {
      {
          8, 2, 22, 97, 38, 15, 0, 40, 0, 75, 4, 5, 7, 78, 52, 12, 50, 77, 91, 8,
      },
      {
          49, 49, 99, 40, 17, 81, 18, 57, 60, 87, 17, 40, 98, 43, 69, 48, 4, 56, 62, 0,
      },
      {
          81, 49, 31, 73, 55, 79, 14, 29, 93, 71, 40, 67, 53, 88, 30, 3, 49, 13, 36, 65,
      },
      {
          52, 70, 95, 23, 4, 60, 11, 42, 69, 24, 68, 56, 1, 32, 56, 71, 37, 2, 36, 91,
      },
      {
          22, 31, 16, 71, 51, 67, 63, 89, 41, 92, 36, 54, 22, 40, 40, 28, 66, 33, 13, 80,
      },
      {
          24, 47, 32, 60, 99, 3, 45, 2, 44, 75, 33, 53, 78, 36, 84, 20, 35, 17, 12, 50,
      },
      {
          32, 98, 81, 28, 64, 23, 67, 10, 26, 38, 40, 67, 59, 54, 70, 66, 18, 38, 64, 70,
      },
      {
          67, 26, 20, 68, 2, 62, 12, 20, 95, 63, 94, 39, 63, 8, 40, 91, 66, 49, 94, 21,
      },
      {
          24, 55, 58, 5, 66, 73, 99, 26, 97, 17, 78, 78, 96, 83, 14, 88, 34, 89, 63, 72,
      },
      {
          21, 36, 23, 9, 75, 0, 76, 44, 20, 45, 35, 14, 0, 61, 33, 97, 34, 31, 33, 95,
      },
      {
          78, 17, 53, 28, 22, 75, 31, 67, 15, 94, 3, 80, 4, 62, 16, 14, 9, 53, 56, 92,
      },
      {
          16, 39, 5, 42, 96, 35, 31, 47, 55, 58, 88, 24, 0, 17, 54, 24, 36, 29, 85, 57,
      },
      {
          86, 56, 0, 48, 35, 71, 89, 7, 5, 44, 44, 37, 44, 60, 21, 58, 51, 54, 17, 58,
      },
      {
          19, 80, 81, 68, 5, 94, 47, 69, 28, 73, 92, 13, 86, 52, 17, 77, 4, 89, 55, 40,
      },
      {
          4, 52, 8, 83, 97, 35, 99, 16, 7, 97, 57, 32, 16, 26, 26, 79, 33, 27, 98, 66,
      },
      {
          88, 36, 68, 87, 57, 62, 20, 72, 3, 46, 33, 67, 46, 55, 12, 32, 63, 93, 53, 69,
      },
      {
          4, 42, 16, 73, 38, 25, 39, 11, 24, 94, 72, 18, 8, 46, 29, 32, 40, 62, 76, 36,
      },
      {
          20, 69, 36, 41, 72, 30, 23, 88, 34, 62, 99, 69, 82, 67, 59, 85, 74, 4, 36, 16,
      },
      {
          20, 73, 35, 29, 78, 31, 90, 1, 74, 31, 49, 71, 48, 86, 81, 16, 23, 57, 5, 54,
      },
      {
          1, 70, 54, 71, 83, 51, 54, 69, 16, 92, 33, 48, 61, 43, 52, 1, 89, 19, 67, 48,
      },
  };
  int r, c, v, m = 0;
  for (r = 0; r < 20; r++) {
    for (c = 0; c < 20; c++) {
      if (c < 20 - 3) {
        v = grid[r][c + 0] * grid[r][c + 1] * grid[r][c + 2] * grid[r][c + 3];
        if (v > m)
          m = v;
      }
      if (r < 20 - 3) {
        v = grid[r + 0][c] * grid[r + 1][c] * grid[r + 2][c] * grid[r + 3][c];
        if (v > m)
          m = v;
      }
      if (c < 20 - 3 && r < 20 - 3) {
        v = grid[r + 0][c + 0] * grid[r + 1][c + 1] * grid[r + 0][c + 2] * grid[r + 3][c + 3];
        if (v > m)
          m = v;
        v = grid[r + 3][c + 0] * grid[r + 2][c + 1] * grid[r + 1][c + 2] * grid[r + 0][c + 3];
        if (v > m)
          m = v;
      }
    }
  }
  printf("%d\n", m);
  return 0;
}
```