#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(void) {
  const char *meses[12] = {"January",   "February", "March",    "April",
                           "May",       "June",     "July",     "August",
                           "September", "October",  "November", "December"};
  int mes;
  scanf("%d", &mes);
  if (mes < 13) {
    printf("%s\n", meses[mes - 1]);
  } else {
    printf("Unknown\n");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x80,%rsp
movl   $0x0,-0x4(%rbp)
lea    -0x70(%rbp),%rdi
lea    0x2c73(%rip),%rsi
mov    $0x60,%edx
call   1040 <memcpy@plt>
lea    0xef8(%rip),%rdi
lea    -0x74(%rbp),%rsi
call   1050 <scanf@plt>
cmpl   $0xd,-0x74(%rbp)
jge    1191 <main+0x61>
mov    -0x74(%rbp),%eax
sub    $0x1,%eax
cltq
mov    -0x70(%rbp,%rax,8),%rsi
lea    0xed4(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    119f <main+0x6f>
lea    0xec5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x80,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xf2e(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
movslq 0x4(%rsp),%rax
cmp    $0xc,%rax
jg     114e <main+0x2e>
lea    0xf20(%rip),%rcx
movslq -0x4(%rcx,%rax,4),%rdi
add    %rcx,%rdi
jmp    1155 <main+0x35>
lea    0xf04(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [8 x i8] c"January\00"
@.str.1 = [9 x i8] c"February\00"
@.str.2 = [6 x i8] c"March\00"
@.str.3 = [6 x i8] c"April\00"
@.str.4 = [4 x i8] c"May\00"
@.str.5 = [5 x i8] c"June\00"
@.str.6 = [5 x i8] c"July\00"
@.str.7 = [7 x i8] c"August\00"
@.str.8 = [10 x i8] c"September\00"
@.str.9 = [8 x i8] c"October\00"
@.str.10 = [9 x i8] c"November\00"
@.str.11 = [9 x i8] c"December\00"
@__const.main.meses = [12 x i8*] [i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.1, i32 0, i32 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i32 0, i32 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i32 0, i32 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i32 0, i32 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.5, i32 0, i32 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.6, i32 0, i32 0), i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.7, i32 0, i32 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.8, i32 0, i32 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.9, i32 0, i32 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.10, i32 0, i32 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.11, i32 0, i32 0)]
@.str.12 = [3 x i8] c"%d\00"
@.str.13 = [4 x i8] c"%s\0A\00"
@.str.14 = [9 x i8] c"Unknown\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [12 x i8*]
%3 = alloca i32
store i32 0, i32* %1
%4 = bitcast [12 x i8*]* %2 to i8*
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.12, i64 0, i64 0), i32* %3)
%6 = load i32, i32* %3
%7 = icmp slt i32 %6, 13
br i1 %7, label %8, label %15
8: ; preds = %0
%9 = load i32, i32* %3
%10 = sub nsw i32 %9, 1
%11 = sext i32 %10 to i64
%12 = getelementptr inbounds [12 x i8*], [12 x i8*]* %2, i64 0, i64 %11
%13 = load i8*, i8** %12
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.13, i64 0, i64 0), i8* %13)
br label %17
15: ; preds = %0
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.14, i64 0, i64 0))
br label %17
17: ; preds = %15, %8
ret i32 0
}

LLVM IR (-O2):
@.str = [8 x i8] c"January\00"
@.str.1 = [9 x i8] c"February\00"
@.str.2 = [6 x i8] c"March\00"
@.str.3 = [6 x i8] c"April\00"
@.str.4 = [4 x i8] c"May\00"
@.str.5 = [5 x i8] c"June\00"
@.str.6 = [5 x i8] c"July\00"
@.str.7 = [7 x i8] c"August\00"
@.str.8 = [10 x i8] c"September\00"
@.str.9 = [8 x i8] c"October\00"
@.str.10 = [9 x i8] c"November\00"
@.str.11 = [9 x i8] c"December\00"
@reltable.main = [12 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @.str.1 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.2 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.3 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([4 x i8]* @.str.4 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @.str.5 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @.str.6 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @.str.7 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @.str.8 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.9 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @.str.10 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @.str.11 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32)]
@.str.12 = [3 x i8] c"%d\00"
@str = [8 x i8] c"Unknown\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.12, i64 0, i64 0), i32* %1)
%4 = load i32, i32* %1
%5 = icmp slt i32 %4, 13
br i1 %5, label %6, label %11
6: ; preds = %0
%7 = add nsw i32 %4, -1
%8 = sext i32 %7 to i64
%9 = shl i64 %8, 2
%10 = call i8* @llvm.load.relative.i64(i8* bitcast ([12 x i32]* @reltable.main to i8*), i64 %9)
br label %11
11: ; preds = %0, %6
%12 = phi i8* [ %10, %6 ], [ getelementptr inbounds ([8 x i8], [8 x i8]* @str, i64 0, i64 0), %0 ]
%13 = call i32 @puts(i8* dereferenceable(1) %12)
ret i32 0
}