#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 year;
  scanf("%d", &year);
  if (year % 400 == 0) {
    printf("its a leap year");
  } else if (year % 4 == 0) {
    printf("its a leap year");
  } else if (year % 100 == 0) {
    printf("Not a leap year");
  } else {
    printf("Not a leap year");
  }
  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    $0x190,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    1164 <main+0x44>
lea    0xea9(%rip),%rdi
call   1030 <printf@plt>
jmp    11c4 <main+0xa4>
mov    -0x8(%rbp),%eax
mov    $0x4,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    1189 <main+0x69>
lea    0xe84(%rip),%rdi
call   1030 <printf@plt>
jmp    11bf <main+0x9f>
mov    -0x8(%rbp),%eax
mov    $0x64,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    11ae <main+0x8e>
lea    0xe6f(%rip),%rdi
call   1030 <printf@plt>
jmp    11ba <main+0x9a>
lea    0xe5e(%rip),%rdi
call   1030 <printf@plt>
jmp    11bf <main+0x9f>
jmp    11c4 <main+0xa4>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xed8(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%eax
imul   $0xc28f5c29,%eax,%ecx
add    $0x51eb850,%ecx
ror    $0x4,%ecx
test   $0x3,%al
lea    0xeb5(%rip),%rax
lea    0xebe(%rip),%rdi
cmove  %rax,%rdi
cmp    $0xa3d70b,%ecx
cmovb  %rax,%rdi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%d\00"
@.str.1 = [16 x i8] c"its a leap year\00"
@.str.2 = [16 x i8] c"Not a leap year\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, 400
%6 = icmp eq i32 %5, 0
br i1 %6, label %7, label %9
7: ; preds = %0
%8 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0))
br label %25
9: ; preds = %0
%10 = load i32, i32* %2
%11 = srem i32 %10, 4
%12 = icmp eq i32 %11, 0
br i1 %12, label %13, label %15
13: ; preds = %9
%14 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0))
br label %24
15: ; preds = %9
%16 = load i32, i32* %2
%17 = srem i32 %16, 100
%18 = icmp eq i32 %17, 0
br i1 %18, label %19, label %21
19: ; preds = %15
%20 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0))
br label %23
21: ; preds = %15
%22 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0))
br label %23
23: ; preds = %21, %19
br label %24
24: ; preds = %23, %13
br label %25
25: ; preds = %24, %7
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%d\00"
@.str.1 = [16 x i8] c"its a leap year\00"
@.str.2 = [16 x i8] c"Not a leap year\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 = srem i32 %4, 400
%6 = icmp eq i32 %5, 0
%7 = and i32 %4, 3
%8 = icmp eq i32 %7, 0
%9 = or i1 %6, %8
%10 = select i1 %9, i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0)
%11 = call i32 @printf(i8* dereferenceable(1) %10)
ret i32 0
}