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

```asm
<main>:
  endbr64
  push   %r15
  lea    D18(%rip),%rsi
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  lea    D4(%rip),%rbp
  push   %rbx
  mov    %rbp,%rdi
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  call   <fopen@plt>
  mov    %rax,%r14
  test   %rax,%rax
  je     L59
L0:
  mov    %rbp,%rsi
  lea    D36(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  lea    D80(%rip),%r15
  lea    0x14(%rsp),%rdx
  mov    %r14,%rdi
  mov    %r15,%rsi
  call   <fscanf@plt>
  mov    0x14(%rsp),%esi
  lea    D86(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    0x14(%rsp),%eax
  lea    0x0(,%rax,4),%edi
  call   <malloc@plt>
  mov    0x14(%rsp),%edi
  mov    $0x4,%esi
  mov    %rax,%r13
  call   <calloc@plt>
  mov    0x14(%rsp),%edi
  mov    $0x4,%esi
  mov    %rax,0x8(%rsp)
  call   <calloc@plt>
  mov    %rax,%r12
  mov    0x14(%rsp),%eax
  test   %eax,%eax
  jle    L58
  mov    %r13,%rbp
  xor    %ebx,%ebx
  nopw   0x0(%rax,%rax,1)
L14:
  mov    %rbp,%rdx
  mov    %r15,%rsi
  mov    %r14,%rdi
  add    $0x1,%ebx
  call   <fscanf@plt>
  add    $0x4,%rbp
  cmp    %ebx,0x14(%rsp)
  jg     L14
L58:
  mov    %r14,%rdi
  lea    D75(%rip),%rbp
  call   <fclose@plt>
  mov    0x14(%rsp),%esi
  mov    %r13,%rdi
  call   <printArrows@plt>
  mov    0x8(%rsp),%rbx
  mov    0x14(%rsp),%eax
  xor    %esi,%esi
  mov    %rbx,%rdi
  lea    -0x1(%rax),%edx
  call   <equalizza@plt>
  mov    0x14(%rsp),%eax
  xor    %esi,%esi
  mov    %r12,%rdi
  lea    -0x1(%rax),%edx
  call   <equalizza@plt>
  lea    D42(%rip),%rdi
  call   <puts@plt>
  mov    0x14(%rsp),%eax
  mov    %rbx,%r8
  mov    %r12,%r9
  xor    %ecx,%ecx
  xor    %esi,%esi
  mov    %r13,%rdi
  mov    $0x50,%ebx
  lea    -0x1(%rax),%edx
  call   <din@plt>
  mov    0x14(%rsp),%esi
  mov    %r12,%rdi
  call   <printArrows@plt>
  mov    0x14(%rsp),%edx
  mov    %r12,%rsi
  mov    %r13,%rdi
  call   <getCosto@plt>
  mov    %rbp,%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  cs nopw 0x0(%rax,%rax,1)
L10:
  mov    $0x2d,%edi
  call   <putchar@plt>
  sub    $0x1,%ebx
  jne    L10
  mov    0x8(%rsp),%rbx
  mov    0x14(%rsp),%eax
  xor    %esi,%esi
  lea    -0x1(%rax),%edx
  mov    %rbx,%rdi
  call   <equalizza@plt>
  mov    0x14(%rsp),%eax
  xor    %esi,%esi
  mov    %r12,%rdi
  lea    -0x1(%rax),%edx
  call   <equalizza@plt>
  lea    D60(%rip),%rdi
  call   <puts@plt>
  mov    0x14(%rsp),%esi
  xor    %edx,%edx
  mov    %r12,%r8
  mov    %rbx,%rcx
  mov    %r13,%rdi
  call   <comb@plt>
  mov    0x14(%rsp),%esi
  mov    %r12,%rdi
  call   <printArrows@plt>
  mov    0x14(%rsp),%edx
  mov    %r12,%rsi
  mov    %r13,%rdi
  call   <getCosto@plt>
  mov    %rbp,%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L29
  add    $0x28,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L59:
  mov    %rbp,%rsi
  lea    D38(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L0
L29:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: label: D18
type_infered: string
name: disassemble_data
arguments: label: D4
type_infered: string
name: disassemble_data
arguments: label: D36
type_infered: string
name: disassemble_data
arguments: label: D80
type_infered: string
name: disassemble_data
arguments: label: D86
type_infered: string
name: disassemble_data
arguments: label: D75
type_infered: string
name: disassemble_data
arguments: label: D42
type_infered: string
name: disassemble_data
arguments: label: D60
type_infered: string
name: disassemble_data
arguments: label: D38
type_infered: string

tool: D18: r

tool: D4: frecce2.txt

tool: D36: Sto usando il file "%s"...


tool: D80: %d

tool: D86: Ho trovato %d frecce...


tool: D75: Costo: %d


tool: D42: Metodo programmazione dinamica...

tool: D60: Metodo calcolo combinatorio...

tool: D38: Errore! Impossibile aprire il file "%s"


assistant: ```c
int main() {
  FILE *fp;
  int i, n;
  int *f, *sol, *bestSol;
  if ((fp = fopen("frecce2.txt", "r")) == NULL) {
    printf("Errore! Impossibile aprire il file \"%s\"\n", "frecce2.txt");
    exit(1);
  }
  printf("Sto usando il file \"%s\"...\n", "frecce2.txt");
  fscanf(fp, "%d", &n);
  printf("Ho trovato %d frecce...\n", n);
  f = (int *)malloc(n * sizeof(int));
  sol = (int *)calloc(n, sizeof(int));
  bestSol = (int *)calloc(n, sizeof(int));
  for (i = 0; i < n; i++) {
    fscanf(fp, "%d", &f[i]);
  }
  fclose(fp);
  printArrows(f, n);
  equalizza(sol, 0, n - 1);
  equalizza(bestSol, 0, n - 1);
  puts("Metodo programmazione dinamica...");
  din(f, 0, n - 1, 0, sol, bestSol);
  printArrows(bestSol, n);
  printf("Costo: %d\n", getCosto(f, bestSol, n));
  for (i = 80; i-- > 0; printf("-"))
    ;
  equalizza(sol, 0, n - 1);
  equalizza(bestSol, 0, n - 1);
  puts("Metodo calcolo combinatorio...");
  comb(f, n, 0, sol, bestSol);
  printArrows(bestSol, n);
  printf("Costo: %d\n", getCosto(f, bestSol, n));
  return 0;
}
```