#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*/ 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 *argv[]) {
  freopen("mouse.in", "r", stdin);
  freopen("mouse.out", "w+", stdout);
  int n;
  scanf("%i", &n);
  printf("%i", 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    0x2e9b(%rip),%rax
mov    (%rax),%edx
lea    0xeaa(%rip),%rdi
lea    0xeac(%rip),%rsi
call   1040 <freopen@plt>
mov    0x2e6f(%rip),%rax
mov    (%rax),%edx
lea    0xe99(%rip),%rdi
lea    0xe9c(%rip),%rsi
call   1040 <freopen@plt>
lea    0xe93(%rip),%rdi
lea    -0x14(%rbp),%rsi
call   1050 <scanf@plt>
mov    -0x14(%rbp),%esi
lea    0xe80(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
mov    0x2eac(%rip),%rax
mov    (%rax),%edx
lea    0xebb(%rip),%rdi
lea    0xebd(%rip),%rsi
call   1040 <freopen@plt>
mov    0x2e80(%rip),%rax
mov    (%rax),%edx
lea    0xeaa(%rip),%rdi
lea    0xead(%rip),%rsi
call   1040 <freopen@plt>
lea    0xea4(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1050 <scanf@plt>
mov    0xc(%rsp),%esi
mov    %rbx,%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [9 x i8] c"mouse.in\00"
@.str.1 = [2 x i8] c"r\00"
@stdin = global i32 0
@.str.2 = [10 x i8] c"mouse.out\00"
@.str.3 = [3 x i8] c"w+\00"
@stdout = global i32 0
@.str.4 = [3 x i8] c"%i\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 ([9 x i8], [9 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 ([10 x i8], [10 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([3 x i8], [3 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 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0), i32 %12)
ret i32 0
}

LLVM IR (-O2):
@.str = [9 x i8] c"mouse.in\00"
@.str.1 = [2 x i8] c"r\00"
@stdin = global i32 0
@.str.2 = [10 x i8] c"mouse.out\00"
@.str.3 = [3 x i8] c"w+\00"
@stdout = global i32 0
@.str.4 = [3 x i8] c"%i\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 ([9 x i8], [9 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 ([10 x i8], [10 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([3 x i8], [3 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 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0), i32 %10)
ret i32 0
}