#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 /*<<< orphan*/ scanf(char *, int *, int *);
int main() {
  int m, n, i, j, c = 1;
  scanf("%d %d", &m, &n);
  for (i = 0; i < m; i++) {
    for (j = 0; j < n; j++) {
      printf("%d ", c);
      c++;
    }
    printf("\n");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x1,-0x18(%rbp)
lea    0xec3(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
call   1040 <scanf@plt>
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    11b4 <main+0x94>
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1198 <main+0x78>
mov    -0x18(%rbp),%esi
lea    0xe8c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1164 <main+0x44>
lea    0xe6b(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1151 <main+0x31>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
lea    0xec2(%rip),%rdi
lea    0x4(%rsp),%rsi
mov    %rsp,%rdx
call   1050 <scanf@plt>
cmpl   $0x0,0x4(%rsp)
jle    11a9 <main+0x79>
mov    $0x1,%ebx
lea    0xea8(%rip),%r14
xor    %r15d,%r15d
jmp    1185 <main+0x55>
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
mov    $0xa,%edi
call   1030 <putchar@plt>
add    $0x1,%r15d
cmp    0x4(%rsp),%r15d
jge    11a9 <main+0x79>
cmpl   $0x0,(%rsp)
jle    1170 <main+0x40>
xor    %ebp,%ebp
nopl   (%rax)
lea    (%rbx,%rbp,1),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%ebp
cmp    (%rsp),%ebp
jl     1190 <main+0x60>
add    %ebp,%ebx
jmp    1170 <main+0x40>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [6 x i8] c"%d %d\00"
@.str.1 = [4 x i8] c"%d \00"
@.str.2 = [2 x i8] c"\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
store i32 0, i32* %1
store i32 1, i32* %6
%7 = call i32 @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i32* %2, i32* %3)
store i32 0, i32* %4
br label %8
8: ; preds = %27, %0
%9 = load i32, i32* %4
%10 = load i32, i32* %2
%11 = icmp slt i32 %9, %10
br i1 %11, label %12, label %30
12: ; preds = %8
store i32 0, i32* %5
br label %13
13: ; preds = %22, %12
%14 = load i32, i32* %5
%15 = load i32, i32* %3
%16 = icmp slt i32 %14, %15
br i1 %16, label %17, label %25
17: ; preds = %13
%18 = load i32, i32* %6
%19 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %18)
%20 = load i32, i32* %6
%21 = add nsw i32 %20, 1
store i32 %21, i32* %6
br label %22
22: ; preds = %17
%23 = load i32, i32* %5
%24 = add nsw i32 %23, 1
store i32 %24, i32* %5
br label %13
25: ; preds = %13
%26 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
br label %27
27: ; preds = %25
%28 = load i32, i32* %4
%29 = add nsw i32 %28, 1
store i32 %29, i32* %4
br label %8
30: ; preds = %8
ret i32 0
}

LLVM IR (-O2):
@.str = [6 x i8] c"%d %d\00"
@.str.1 = [4 x i8] c"%d \00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
%4 = bitcast i32* %2 to i8*
%5 = call i32 @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i32* %1, i32* %2)
%6 = load i32, i32* %1
%7 = icmp sgt i32 %6, 0
br i1 %7, label %8, label %27
8: ; preds = %0, %21
%9 = phi i32 [ %22, %21 ], [ 1, %0 ]
%10 = phi i32 [ %24, %21 ], [ 0, %0 ]
%11 = load i32, i32* %2
%12 = icmp sgt i32 %11, 0
br i1 %12, label %13, label %21
13: ; preds = %8, %13
%14 = phi i32 [ %17, %13 ], [ %9, %8 ]
%15 = phi i32 [ %18, %13 ], [ 0, %8 ]
%16 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %14)
%17 = add nsw i32 %14, 1
%18 = add nuw nsw i32 %15, 1
%19 = load i32, i32* %2
%20 = icmp slt i32 %18, %19
br i1 %20, label %13, label %21
21: ; preds = %13, %8
%22 = phi i32 [ %9, %8 ], [ %17, %13 ]
%23 = call i32 @putchar(i32 10)
%24 = add nuw nsw i32 %10, 1
%25 = load i32, i32* %1
%26 = icmp slt i32 %24, %25
br i1 %26, label %8, label %27
27: ; preds = %21, %0
ret i32 0
}