#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 pairs(int, int *, int);
int /*<<< orphan*/ printf(char *, int);
int /*<<< orphan*/ scanf(char *, int *, ...);
int main() {
  int size, i, k, item, p;
  scanf("%d %d", &size, &k);
  int arr[size];
  for (i = 0; i < size; i++) {
    scanf("%d", &item);
    arr[i] = item;
  }
  p = pairs(size, arr, k);
  printf("pairs: %d\n", p);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
xor    %eax,%eax
lea    -0x8(%rbp),%rsi
lea    -0x10(%rbp),%rdx
call   1050 <scanf@plt>
mov    -0x8(%rbp),%eax
mov    %rsp,%rcx
mov    %rcx,-0x20(%rbp)
lea    0xf(,%rax,4),%rdx
and    $0xfffffffffffffff0,%rdx
mov    %rsp,%rcx
sub    %rdx,%rcx
mov    %rcx,-0x30(%rbp)
mov    %rcx,%rsp
mov    %rax,-0x28(%rbp)
movl   $0x0,-0xc(%rbp)
mov    -0xc(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    11bd <main+0x8d>
lea    0xe6d(%rip),%rdi
lea    -0x14(%rbp),%rsi
mov    $0x0,%al
call   1050 <scanf@plt>
mov    -0x30(%rbp),%rax
mov    -0x14(%rbp),%edx
movslq -0xc(%rbp),%rcx
mov    %edx,(%rax,%rcx,4)
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1183 <main+0x53>
mov    -0x30(%rbp),%rsi
mov    -0x8(%rbp),%edi
mov    -0x10(%rbp),%edx
call   1040 <pairs@plt>
mov    %eax,-0x18(%rbp)
mov    -0x18(%rbp),%esi
lea    0xe2d(%rip),%rdi
call   1030 <printf@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x20(%rbp),%rax
mov    %rax,%rsp
mov    -0x4(%rbp),%eax
mov    %rbp,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
mov    %rsp,%rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
sub    $0x18,%rsp
lea    0xeb8(%rip),%rdi
lea    -0x2c(%rbp),%rsi
lea    -0x34(%rbp),%rdx
xor    %eax,%eax
call   1050 <scanf@plt>
mov    %rsp,%r12
mov    -0x2c(%rbp),%eax
mov    %rsp,%r13
lea    0xf(,%rax,4),%rax
and    $0xfffffffffffffff0,%rax
sub    %rax,%r13
mov    %r13,%rsp
mov    -0x2c(%rbp),%edi
test   %edi,%edi
jle    11b2 <main+0x82>
lea    0xe83(%rip),%r14
lea    -0x30(%rbp),%r15
xor    %ebx,%ebx
cs nopw 0x0(%rax,%rax,1)
mov    %r14,%rdi
mov    %r15,%rsi
xor    %eax,%eax
call   1050 <scanf@plt>
mov    -0x30(%rbp),%eax
mov    %eax,0x0(%r13,%rbx,4)
add    $0x1,%rbx
movslq -0x2c(%rbp),%rdi
cmp    %rdi,%rbx
jl     1190 <main+0x60>
mov    -0x34(%rbp),%edx
mov    %r13,%rsi
call   1040 <pairs@plt>
lea    0xe42(%rip),%rdi
mov    %eax,%esi
call   1030 <printf@plt>
mov    %r12,%rsp
xor    %eax,%eax
lea    -0x28(%rbp),%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [6 x i8] c"%d %d\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [11 x i8] c"pairs: %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
%7 = alloca i8*
%8 = alloca i64
store i32 0, i32* %1
%9 = call i32 (i8*, i32*, ...) @scanf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i32* %2, i32* %4)
%10 = load i32, i32* %2
%11 = zext i32 %10 to i64
%12 = call i8* @llvm.stacksave()
store i8* %12, i8** %7
%13 = alloca i32, i64 %11
store i64 %11, i64* %8
store i32 0, i32* %3
br label %14
14: ; preds = %24, %0
%15 = load i32, i32* %3
%16 = load i32, i32* %2
%17 = icmp slt i32 %15, %16
br i1 %17, label %18, label %27
18: ; preds = %14
%19 = call i32 (i8*, i32*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %5)
%20 = load i32, i32* %5
%21 = load i32, i32* %3
%22 = sext i32 %21 to i64
%23 = getelementptr inbounds i32, i32* %13, i64 %22
store i32 %20, i32* %23
br label %24
24: ; preds = %18
%25 = load i32, i32* %3
%26 = add nsw i32 %25, 1
store i32 %26, i32* %3
br label %14
27: ; preds = %14
%28 = load i32, i32* %2
%29 = load i32, i32* %4
%30 = call i32 @pairs(i32 %28, i32* %13, i32 %29)
store i32 %30, i32* %6
%31 = load i32, i32* %6
%32 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.2, i64 0, i64 0), i32 %31)
store i32 0, i32* %1
%33 = load i8*, i8** %7
%34 = load i32, i32* %1
ret i32 %34
}

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