#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 findSizeCollatz(int);
int /*<<< orphan*/ freopen(char *, char *, int /*<<< orphan*/);
int /*<<< orphan*/ printf(char *, int);
int /*<<< orphan*/ scanf(char *, int *);
int /*<<< orphan*/ stdin;
int /*<<< orphan*/ stdout;
int main(int argc, char const *argv[]) {
  freopen("input.txt", "r", stdin);
  freopen("output.txt", "w", stdout);
  int N;
  scanf("%d", &N);
  printf("%d\n", findSizeCollatz(N));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    0x2e8b(%rip),%rax
mov    (%rax),%edx
lea    0xe9a(%rip),%rdi
lea    0xe9d(%rip),%rsi
call   1050 <freopen@plt>
mov    0x2e5f(%rip),%rax
mov    (%rax),%edx
lea    0xe8a(%rip),%rdi
lea    0xe8e(%rip),%rsi
call   1050 <freopen@plt>
lea    0xe84(%rip),%rdi
lea    -0x14(%rbp),%rsi
call   1060 <scanf@plt>
mov    -0x14(%rbp),%edi
call   1030 <findSizeCollatz@plt>
mov    %eax,%esi
lea    0xe6d(%rip),%rdi
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
mov    0x2ea0(%rip),%rax
mov    (%rax),%edx
lea    0xeaf(%rip),%rdi
lea    0xeb2(%rip),%rsi
call   1050 <freopen@plt>
mov    0x2e74(%rip),%rax
mov    (%rax),%edx
lea    0xe9f(%rip),%rdi
lea    0xea3(%rip),%rsi
call   1050 <freopen@plt>
lea    0xe99(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1060 <scanf@plt>
mov    0x4(%rsp),%edi
call   1030 <findSizeCollatz@plt>
lea    0xe82(%rip),%rdi
mov    %eax,%esi
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [10 x i8] c"input.txt\00"
@.str.1 = [2 x i8] c"r\00"
@stdin = global i32 0
@.str.2 = [11 x i8] c"output.txt\00"
@.str.3 = [2 x i8] c"w\00"
@stdout = global i32 0
@.str.4 = [3 x i8] c"%d\00"
@.str.5 = [4 x i8] c"%d\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%7 = load i32, i32* @stdin
%8 = call i32 @freopen(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0), i32 %7)
%9 = load i32, i32* @stdout
%10 = call i32 @freopen(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0), i32 %9)
%11 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0), i32* %6)
%12 = load i32, i32* %6
%13 = call i32 @findSizeCollatz(i32 %12)
%14 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.5, i64 0, i64 0), i32 %13)
ret i32 0
}

LLVM IR (-O2):
@.str = [10 x i8] c"input.txt\00"
@.str.1 = [2 x i8] c"r\00"
@stdin = global i32 0
@.str.2 = [11 x i8] c"output.txt\00"
@.str.3 = [2 x i8] c"w\00"
@stdout = global i32 0
@.str.4 = [3 x i8] c"%d\00"
@.str.5 = [4 x i8] c"%d\0A\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = alloca i32
%4 = load i32, i32* @stdin
%5 = tail call i32 @freopen(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0), i32 %4)
%6 = load i32, i32* @stdout
%7 = tail call i32 @freopen(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0), i32 %6)
%8 = bitcast i32* %3 to i8*
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0), i32* %3)
%10 = load i32, i32* %3
%11 = call i32 @findSizeCollatz(i32 %10)
%12 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.5, i64 0, i64 0), i32 %11)
ret i32 0
}