#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);
int main() {
  int i, sign = -1, cambsign = 2, suma;
  for (i = 2; i <= 26; i++) {
    suma = sign * i;
    printf("%d\t", suma);
    if (cambsign == 2) {
      sign = sign * -1;
      cambsign = 0;
    }
    cambsign++;
    i = i + 2;
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0xffffffff,-0xc(%rbp)
movl   $0x2,-0x10(%rbp)
movl   $0x2,-0x8(%rbp)
cmpl   $0x1a,-0x8(%rbp)
jg     118f <main+0x7f>
mov    -0xc(%rbp),%eax
imul   -0x8(%rbp),%eax
mov    %eax,-0x14(%rbp)
mov    -0x14(%rbp),%esi
lea    0xeae(%rip),%rdi
call   1030 <printf@plt>
cmpl   $0x2,-0x10(%rbp)
jne    116f <main+0x5f>
imul   $0xffffffff,-0xc(%rbp),%eax
mov    %eax,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
mov    -0x8(%rbp),%eax
add    $0x2,%eax
mov    %eax,-0x8(%rbp)
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1134 <main+0x24>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xee8(%rip),%rbx
mov    %rbx,%rdi
mov    $0xfffffffe,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x5,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x8,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0xfffffff5,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0xfffffff2,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x11,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x14,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0xffffffe9,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0xffffffe6,%esi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [4 x i8] c"%d\09\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 0, i32* %1
store i32 -1, i32* %3
store i32 2, i32* %4
store i32 2, i32* %2
br label %6
6: ; preds = %25, %0
%7 = load i32, i32* %2
%8 = icmp sle i32 %7, 26
br i1 %8, label %9, label %28
9: ; preds = %6
%10 = load i32, i32* %3
%11 = load i32, i32* %2
%12 = mul nsw i32 %10, %11
store i32 %12, i32* %5
%13 = load i32, i32* %5
%14 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %13)
%15 = load i32, i32* %4
%16 = icmp eq i32 %15, 2
br i1 %16, label %17, label %20
17: ; preds = %9
%18 = load i32, i32* %3
%19 = mul nsw i32 %18, -1
store i32 %19, i32* %3
store i32 0, i32* %4
br label %20
20: ; preds = %17, %9
%21 = load i32, i32* %4
%22 = add nsw i32 %21, 1
store i32 %22, i32* %4
%23 = load i32, i32* %2
%24 = add nsw i32 %23, 2
store i32 %24, i32* %2
br label %25
25: ; preds = %20
%26 = load i32, i32* %2
%27 = add nsw i32 %26, 1
store i32 %27, i32* %2
br label %6
28: ; preds = %6
ret i32 0
}

LLVM IR (-O2):
@.str = [4 x i8] c"%d\09\00"
define i32 @main() {
%1 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 -2)
%2 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 5)
%3 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 8)
%4 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 -11)
%5 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 -14)
%6 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 17)
%7 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 20)
%8 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 -23)
%9 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 -26)
ret i32 0
}