#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 */
scalar_t__ EOF;
int /*<<< orphan*/ printf(char *, int);
scalar_t__ scanf(char *, int *);
int main(void) {
  int num;
  while (scanf("%d", &num) != EOF) {
    num %= 39;
    if (num == 0)
      num = 39;
    printf("3C%02d\n", num);
  }
  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    0x2ea2(%rip),%rcx
cmp    (%rcx),%rax
je     1182 <main+0x62>
mov    -0x8(%rbp),%eax
mov    $0x27,%ecx
cltd
idiv   %ecx
mov    %edx,-0x8(%rbp)
cmpl   $0x0,-0x8(%rbp)
jne    116e <main+0x4e>
movl   $0x27,-0x8(%rbp)
mov    -0x8(%rbp),%esi
lea    0xe8b(%rip),%rdi
call   1030 <printf@plt>
jmp    112f <main+0xf>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
sub    $0x10,%rsp
lea    0xecd(%rip),%rdi
lea    0xc(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x2ea4(%rip),%r12
cmp    (%r12),%rax
je     11b1 <main+0x91>
mov    $0x27,%ebp
lea    0xead(%rip),%r14
lea    0xea3(%rip),%r15
lea    0xc(%rsp),%rbx
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax)
movslq 0xc(%rsp),%rsi
imul   $0xffffffffd20d20d3,%rsi,%rax
shr    $0x20,%rax
add    %esi,%eax
mov    %eax,%ecx
shr    $0x1f,%ecx
sar    $0x5,%eax
add    %ecx,%eax
imul   $0x27,%eax,%eax
sub    %eax,%esi
cmove  %ebp,%esi
mov    %esi,0xc(%rsp)
mov    %r14,%rdi
call   1030 <printf@plt>
mov    %r15,%rdi
mov    %rbx,%rsi
call   1040 <scanf@plt>
cmp    (%r12),%rax
jne    1170 <main+0x50>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%d\00"
@EOF = global i64 0
@.str.1 = [8 x i8] c"3C%02d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
br label %3
3: ; preds = %13, %0
%4 = call i64 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %2)
%5 = load i64, i64* @EOF
%6 = icmp ne i64 %4, %5
br i1 %6, label %7, label %16
7: ; preds = %3
%8 = load i32, i32* %2
%9 = srem i32 %8, 39
store i32 %9, i32* %2
%10 = load i32, i32* %2
%11 = icmp eq i32 %10, 0
br i1 %11, label %12, label %13
12: ; preds = %7
store i32 39, i32* %2
br label %13
13: ; preds = %12, %7
%14 = load i32, i32* %2
%15 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i32 %14)
br label %3
16: ; preds = %3
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%d\00"
@EOF = global i64 0
@.str.1 = [8 x i8] c"3C%02d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = call i64 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %1)
%4 = load i64, i64* @EOF
%5 = icmp eq i64 %3, %4
br i1 %5, label %15, label %6
6: ; preds = %0, %6
%7 = load i32, i32* %1
%8 = srem i32 %7, 39
%9 = icmp eq i32 %8, 0
%10 = select i1 %9, i32 39, i32 %8
store i32 %10, i32* %1
%11 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i32 %10)
%12 = call i64 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %1)
%13 = load i64, i64* @EOF
%14 = icmp eq i64 %12, %13
br i1 %14, label %15, label %6
15: ; preds = %6, %0
ret i32 0
}