#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__ pal(char *, int /*<<< orphan*/, int);
int /*<<< orphan*/ printf(char *);
int /*<<< orphan*/ scanf(char *, char *);
int strlen(char *);
int main() {
  char s[100];
  scanf("%s", s);
  int n = strlen(s);
  if (pal(s, 0, n - 1)) {
    printf("Yes");
  } else {
    printf("No");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x80,%rsp
movl   $0x0,-0x4(%rbp)
lea    -0x70(%rbp),%rsi
lea    0xea3(%rip),%rdi
call   1060 <scanf@plt>
lea    -0x70(%rbp),%rdi
call   1030 <strlen@plt>
mov    %eax,-0x74(%rbp)
lea    -0x70(%rbp),%rdi
mov    -0x74(%rbp),%edx
sub    $0x1,%edx
xor    %esi,%esi
call   1050 <pal@plt>
cmp    $0x0,%rax
je     119a <main+0x5a>
lea    0xe73(%rip),%rdi
call   1040 <printf@plt>
jmp    11a6 <main+0x66>
lea    0xe66(%rip),%rdi
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x80,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x70,%rsp
lea    0xeb4(%rip),%rdi
mov    %rsp,%rbx
mov    %rbx,%rsi
call   1060 <scanf@plt>
mov    %rbx,%rdi
call   1030 <strlen@plt>
lea    -0x1(%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1050 <pal@plt>
test   %rax,%rax
lea    0xe91(%rip),%rax
lea    0xe86(%rip),%rdi
cmove  %rax,%rdi
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x70,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%s\00"
@.str.1 = [4 x i8] c"Yes\00"
@.str.2 = [3 x i8] c"No\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [100 x i8]
%3 = alloca i32
store i32 0, i32* %1
%4 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* %4)
%6 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%7 = call i32 @strlen(i8* %6)
store i32 %7, i32* %3
%8 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%9 = load i32, i32* %3
%10 = sub nsw i32 %9, 1
%11 = call i64 @pal(i8* %8, i32 0, i32 %10)
%12 = icmp ne i64 %11, 0
br i1 %12, label %13, label %15
13: ; preds = %0
%14 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
br label %17
15: ; preds = %0
%16 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
br label %17
17: ; preds = %15, %13
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%s\00"
@.str.1 = [4 x i8] c"Yes\00"
@.str.2 = [3 x i8] c"No\00"
define i32 @main() {
%1 = alloca [100 x i8]
%2 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* %2)
%4 = call i32 @strlen(i8* %2)
%5 = add nsw i32 %4, -1
%6 = call i64 @pal(i8* %2, i32 0, i32 %5)
%7 = icmp eq i64 %6, 0
%8 = select i1 %7, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0)
%9 = call i32 @printf(i8* dereferenceable(1) %8)
ret i32 0
}