#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  int a;
  scanf("%d", &a);
  if (a % 2 == 0) {
    printf("%d\n", a / 2);
  } else if (a % 3 == 0) {
    printf("%d\n", a / 3);
  } else {
    printf("0\n");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
mov    $0x2,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    1173 <main+0x53>
mov    -0x8(%rbp),%eax
mov    $0x2,%ecx
cltd
idiv   %ecx
mov    %eax,%esi
lea    0xe9c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11ba <main+0x9a>
mov    -0x8(%rbp),%eax
mov    $0x3,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    11a7 <main+0x87>
mov    -0x8(%rbp),%eax
mov    $0x3,%ecx
cltd
idiv   %ecx
mov    %eax,%esi
lea    0xe68(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11b5 <main+0x95>
lea    0xe59(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11ba <main+0x9a>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xec8(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%eax
test   $0x1,%al
jne    115c <main+0x2c>
mov    %eax,%esi
shr    $0x1f,%esi
add    %eax,%esi
sar    %esi
lea    0xea9(%rip),%rdi
jmp    119b <main+0x6b>
imul   $0xaaaaaaab,%eax,%ecx
add    $0x2aaaaaaa,%ecx
cmp    $0x55555554,%ecx
jbe    117e <main+0x4e>
lea    0xe90(%rip),%rdi
call   1030 <puts@plt>
jmp    11a2 <main+0x72>
cltq
imul   $0x55555556,%rax,%rsi
mov    %rsi,%rax
shr    $0x3f,%rax
shr    $0x20,%rsi
add    %eax,%esi
lea    0xe68(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%d\00"
@.str.1 = [4 x i8] c"%d\0A\00"
@.str.2 = [3 x i8] c"0\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %2)
%4 = load i32, i32* %2
%5 = srem i32 %4, 2
%6 = icmp eq i32 %5, 0
br i1 %6, label %7, label %11
7: ; preds = %0
%8 = load i32, i32* %2
%9 = sdiv i32 %8, 2
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %9)
br label %22
11: ; preds = %0
%12 = load i32, i32* %2
%13 = srem i32 %12, 3
%14 = icmp eq i32 %13, 0
br i1 %14, label %15, label %19
15: ; preds = %11
%16 = load i32, i32* %2
%17 = sdiv i32 %16, 3
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %17)
br label %21
19: ; preds = %11
%20 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
br label %21
21: ; preds = %19, %15
br label %22
22: ; preds = %21, %7
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%d\00"
@.str.1 = [4 x i8] c"%d\0A\00"
@str = [2 x i8] c"0\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %1)
%4 = load i32, i32* %1
%5 = and i32 %4, 1
%6 = icmp eq i32 %5, 0
br i1 %6, label %7, label %10
7: ; preds = %0
%8 = sdiv i32 %4, 2
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %8)
br label %18
10: ; preds = %0
%11 = srem i32 %4, 3
%12 = sdiv i32 %4, 3
%13 = icmp eq i32 %11, 0
br i1 %13, label %14, label %16
14: ; preds = %10
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %12)
br label %18
16: ; preds = %10
%17 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str, i64 0, i64 0))
br label %18
18: ; preds = %14, %16, %7
ret i32 0
}