#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 */
char EOF;
char getchar();
int /*<<< orphan*/ putchar(char);
int main() {
  int prev_was_empty = 0;
  char c;
  while ((c = getchar()) != EOF) {
    if (c == ' ' || c == '\t' || c == '\n') {
      if (prev_was_empty) {
        continue;
      }
      putchar('\n');
      prev_was_empty = 1;
    } else {
      putchar(c);
      prev_was_empty = 0;
    }
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
mov    $0x0,%al
call   1040 <getchar@plt>
mov    %al,-0x9(%rbp)
movsbl %al,%eax
mov    0x2e9e(%rip),%rcx
movsbl (%rcx),%ecx
cmp    %ecx,%eax
je     11b6 <main+0x96>
movsbl -0x9(%rbp),%eax
cmp    $0x20,%eax
je     117c <main+0x5c>
movsbl -0x9(%rbp),%eax
cmp    $0x9,%eax
je     117c <main+0x5c>
movsbl -0x9(%rbp),%eax
cmp    $0xa,%eax
jne    11a1 <main+0x81>
cmpl   $0x0,-0x8(%rbp)
je     118b <main+0x6b>
jmp    1136 <main+0x16>
mov    $0xa,%edi
call   1030 <putchar@plt>
movl   $0x1,-0x8(%rbp)
jmp    11b1 <main+0x91>
movsbl -0x9(%rbp),%edi
call   1030 <putchar@plt>
movl   $0x0,-0x8(%rbp)
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    %eax,%eax
call   1040 <getchar@plt>
mov    0x2eb6(%rip),%rbx
cmp    (%rbx),%al
jne    113d <main+0x1d>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %rbp
ret
movabs $0x100000600,%r14
xor    %ecx,%ecx
jmp    1165 <main+0x45>
nopl   0x0(%rax,%rax,1)
movsbl %al,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
call   1040 <getchar@plt>
mov    %ebp,%ecx
cmp    (%rbx),%al
je     1136 <main+0x16>
xor    %ebp,%ebp
cmp    $0x20,%al
ja     1150 <main+0x30>
movzbl %al,%edx
bt     %rdx,%r14
jae    1150 <main+0x30>
mov    $0x1,%ebp
test   %ecx,%ecx
jne    1158 <main+0x38>
mov    $0xa,%al
jmp    1150 <main+0x30>

LLVM IR (-O0):
@EOF = global i8 0
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i8
store i32 0, i32* %1
store i32 0, i32* %2
br label %4
4: ; preds = %31, %25, %0
%5 = call signext i8 (...) @getchar()
store i8 %5, i8* %3
%6 = sext i8 %5 to i32
%7 = load i8, i8* @EOF
%8 = sext i8 %7 to i32
%9 = icmp ne i32 %6, %8
br i1 %9, label %10, label %32
10: ; preds = %4
%11 = load i8, i8* %3
%12 = sext i8 %11 to i32
%13 = icmp eq i32 %12, 32
br i1 %13, label %22, label %14
14: ; preds = %10
%15 = load i8, i8* %3
%16 = sext i8 %15 to i32
%17 = icmp eq i32 %16, 9
br i1 %17, label %22, label %18
18: ; preds = %14
%19 = load i8, i8* %3
%20 = sext i8 %19 to i32
%21 = icmp eq i32 %20, 10
br i1 %21, label %22, label %28
22: ; preds = %18, %14, %10
%23 = load i32, i32* %2
%24 = icmp ne i32 %23, 0
br i1 %24, label %25, label %26
25: ; preds = %22
br label %4
26: ; preds = %22
%27 = call i32 @putchar(i8 signext 10)
store i32 1, i32* %2
br label %31
28: ; preds = %18
%29 = load i8, i8* %3
%30 = call i32 @putchar(i8 signext %29)
store i32 0, i32* %2
br label %31
31: ; preds = %28, %26
br label %4
32: ; preds = %4
ret i32 0
}

LLVM IR (-O2):
@EOF = global i8 0
define i32 @main() {
%1 = tail call signext i8 (...) @getchar()
%2 = load i8, i8* @EOF
%3 = icmp eq i8 %1, %2
br i1 %3, label %18, label %4
4: ; preds = %0, %13
%5 = phi i8 [ %15, %13 ], [ %1, %0 ]
%6 = phi i32 [ %14, %13 ], [ 0, %0 ]
switch i8 %5, label %9 [
i8 32, label %7
i8 10, label %7
i8 9, label %7
]
7: ; preds = %4, %4, %4
%8 = icmp eq i32 %6, 0
br i1 %8, label %9, label %13
9: ; preds = %4, %7
%10 = phi i8 [ 10, %7 ], [ %5, %4 ]
%11 = phi i32 [ 1, %7 ], [ 0, %4 ]
%12 = tail call i32 @putchar(i8 signext %10)
br label %13
13: ; preds = %9, %7
%14 = phi i32 [ 1, %7 ], [ %11, %9 ]
%15 = tail call signext i8 (...) @getchar()
%16 = load i8, i8* @EOF
%17 = icmp eq i8 %15, %16
br i1 %17, label %18, label %4
18: ; preds = %13, %0
ret i32 0
}