#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 EOF;
int getchar();
int /*<<< orphan*/ putchar(int);
int main() {
  int c;
  int n = 0;
  while ((c = getchar()) != EOF) {
    if (c == ' ') {
      ++n;
    } else {
      n = 0;
    }
    if (n < 2) {
      putchar(c);
    }
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0xc(%rbp)
mov    $0x0,%al
call   1040 <getchar@plt>
mov    %eax,-0x8(%rbp)
mov    0x2ea1(%rip),%rcx
cmp    (%rcx),%eax
je     1185 <main+0x65>
cmpl   $0x20,-0x8(%rbp)
jne    1167 <main+0x47>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    116e <main+0x4e>
movl   $0x0,-0xc(%rbp)
cmpl   $0x2,-0xc(%rbp)
jge    1180 <main+0x60>
mov    -0x8(%rbp),%edi
call   1030 <putchar@plt>
jmp    1136 <main+0x16>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r14
push   %rbx
xor    %r14d,%r14d
xor    %eax,%eax
call   1040 <getchar@plt>
mov    0x2eb3(%rip),%rbx
cmp    (%rbx),%eax
jne    1140 <main+0x20>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %rbp
ret
xor    %ebp,%ebp
jmp    115b <main+0x3b>
cs nopw 0x0(%rax,%rax,1)
xchg   %ax,%ax
xor    %eax,%eax
call   1040 <getchar@plt>
cmp    (%rbx),%eax
je     1139 <main+0x19>
add    $0x1,%ebp
cmp    $0x20,%eax
cmovne %r14d,%ebp
cmp    $0x1,%ebp
jg     1150 <main+0x30>
mov    %eax,%edi
call   1030 <putchar@plt>
jmp    1150 <main+0x30>

LLVM IR (-O0):
@EOF = global i32 0
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %3
br label %4
4: ; preds = %21, %0
%5 = call i32 (...) @getchar()
store i32 %5, i32* %2
%6 = load i32, i32* @EOF
%7 = icmp ne i32 %5, %6
br i1 %7, label %8, label %22
8: ; preds = %4
%9 = load i32, i32* %2
%10 = icmp eq i32 %9, 32
br i1 %10, label %11, label %14
11: ; preds = %8
%12 = load i32, i32* %3
%13 = add nsw i32 %12, 1
store i32 %13, i32* %3
br label %15
14: ; preds = %8
store i32 0, i32* %3
br label %15
15: ; preds = %14, %11
%16 = load i32, i32* %3
%17 = icmp slt i32 %16, 2
br i1 %17, label %18, label %21
18: ; preds = %15
%19 = load i32, i32* %2
%20 = call i32 @putchar(i32 %19)
br label %21
21: ; preds = %18, %15
br label %4
22: ; preds = %4
ret i32 0
}

LLVM IR (-O2):
@EOF = global i32 0
define i32 @main() {
%1 = tail call i32 (...) @getchar()
%2 = load i32, i32* @EOF
%3 = icmp eq i32 %1, %2
br i1 %3, label %17, label %4
4: ; preds = %0, %13
%5 = phi i32 [ %14, %13 ], [ %1, %0 ]
%6 = phi i32 [ %9, %13 ], [ 0, %0 ]
%7 = icmp eq i32 %5, 32
%8 = add nsw i32 %6, 1
%9 = select i1 %7, i32 %8, i32 0
%10 = icmp slt i32 %9, 2
br i1 %10, label %11, label %13
11: ; preds = %4
%12 = tail call i32 @putchar(i32 %5)
br label %13
13: ; preds = %11, %4
%14 = tail call i32 (...) @getchar()
%15 = load i32, i32* @EOF
%16 = icmp eq i32 %14, %15
br i1 %16, label %17, label %4
17: ; preds = %13, %0
ret i32 0
}