#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 /*<<< orphan*/ scanf(char *, int *);
int main() {
  int N, maior = 0;
  scanf(" %d", &N);
  do {
    maior = N > maior ? N : maior;
    scanf(" %d", &N);
  } while (N != 0);
  printf("%d", maior);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0xc(%rbp)
lea    0xec3(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
cmp    -0xc(%rbp),%eax
jle    115d <main+0x3d>
mov    -0x8(%rbp),%eax
mov    %eax,-0x10(%rbp)
jmp    1163 <main+0x43>
mov    -0xc(%rbp),%eax
mov    %eax,-0x10(%rbp)
mov    -0x10(%rbp),%eax
mov    %eax,-0xc(%rbp)
lea    0xe90(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
cmpl   $0x0,-0x8(%rbp)
jne    1146 <main+0x26>
mov    -0xc(%rbp),%esi
lea    0xe74(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r14
push   %rbx
sub    $0x10,%rsp
lea    0xed1(%rip),%r14
lea    0xc(%rsp),%rbx
mov    %r14,%rdi
mov    %rbx,%rsi
call   1040 <scanf@plt>
xor    %ebp,%ebp
mov    0xc(%rsp),%eax
cs nopw 0x0(%rax,%rax,1)
nop
cmp    %ebp,%eax
cmovg  %eax,%ebp
mov    %r14,%rdi
mov    %rbx,%rsi
call   1040 <scanf@plt>
mov    0xc(%rsp),%eax
test   %eax,%eax
jne    1150 <main+0x30>
lea    0xe92(%rip),%rdi
mov    %ebp,%esi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
@.str = [4 x i8] c" %d\00"
@.str.1 = [3 x i8] c"%d\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %3
%4 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32* %2)
br label %5
5: ; preds = %16, %0
%6 = load i32, i32* %2
%7 = load i32, i32* %3
%8 = icmp sgt i32 %6, %7
br i1 %8, label %9, label %11
9: ; preds = %5
%10 = load i32, i32* %2
br label %13
11: ; preds = %5
%12 = load i32, i32* %3
br label %13
13: ; preds = %11, %9
%14 = phi i32 [ %10, %9 ], [ %12, %11 ]
store i32 %14, i32* %3
%15 = call i32 @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32* %2)
br label %16
16: ; preds = %13
%17 = load i32, i32* %2
%18 = icmp ne i32 %17, 0
br i1 %18, label %5, label %19
19: ; preds = %16
%20 = load i32, i32* %3
%21 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %20)
ret i32 0
}

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