#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 */
double C(int, int);
double P(int, int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *);
main() {
  int n, r;
  printf("n=");
  scanf("%d", &n);
  printf("r=");
  scanf("%d", &r);
  printf("nPr=%.0f\n", P(n, r));
  printf("nCr=%.0f\n", C(n, r));
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xeb1(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xea6(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1060 <scanf@plt>
lea    0xe99(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xe88(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1060 <scanf@plt>
mov    -0x4(%rbp),%edi
mov    -0x8(%rbp),%esi
call   1030 <P@plt>
lea    0xe73(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    -0x4(%rbp),%edi
mov    -0x8(%rbp),%esi
call   1050 <C@plt>
lea    0xe64(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xeb4(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xea9(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1060 <scanf@plt>
lea    0xe98(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1060 <scanf@plt>
mov    0xc(%rsp),%edi
mov    0x8(%rsp),%esi
call   1030 <P@plt>
lea    0xe73(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
mov    0xc(%rsp),%edi
mov    0x8(%rsp),%esi
call   1050 <C@plt>
lea    0xe62(%rip),%rdi
mov    $0x1,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"n=\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [3 x i8] c"r=\00"
@.str.3 = [10 x i8] c"nPr=%.0f\0A\00"
@.str.4 = [10 x i8] c"nCr=%.0f\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%7 = load i32, i32* %1
%8 = load i32, i32* %2
%9 = call double @P(i32 %7, i32 %8)
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.3, i64 0, i64 0), double %9)
%11 = load i32, i32* %1
%12 = load i32, i32* %2
%13 = call double @C(i32 %11, i32 %12)
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0), double %13)
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"n=\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [3 x i8] c"r=\00"
@.str.3 = [10 x i8] c"nPr=%.0f\0A\00"
@.str.4 = [10 x i8] c"nCr=%.0f\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
%4 = bitcast i32* %2 to i8*
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%7 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%9 = load i32, i32* %1
%10 = load i32, i32* %2
%11 = call double @P(i32 %9, i32 %10)
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([10 x i8], [10 x i8]* @.str.3, i64 0, i64 0), double %11)
%13 = load i32, i32* %1
%14 = load i32, i32* %2
%15 = call double @C(i32 %13, i32 %14)
%16 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0), double %15)
ret i32 0
}