#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;
  int a, b, c, count = 0;
  scanf("%d", &N);
  for (a = 1; a <= N; a = a + 1, count = count + 1) {
    for (b = 1; b <= a; b = b + 1) {
      for (c = 1; c < a + b; c = c + 1)
        ;
    }
  }
  printf("Number of possible triangles is %d", count);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x18(%rbp)
lea    0xee3(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
movl   $0x1,-0xc(%rbp)
mov    -0xc(%rbp),%eax
cmp    -0x8(%rbp),%eax
jg     11c6 <main+0xa6>
movl   $0x1,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jg     11aa <main+0x8a>
movl   $0x1,-0x14(%rbp)
mov    -0x14(%rbp),%eax
mov    -0xc(%rbp),%ecx
add    -0x10(%rbp),%ecx
cmp    %ecx,%eax
jge    1197 <main+0x77>
jmp    1189 <main+0x69>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1173 <main+0x53>
jmp    119c <main+0x7c>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1160 <main+0x40>
jmp    11af <main+0x8f>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    114d <main+0x2d>
mov    -0x18(%rbp),%esi
lea    0xe30(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xef8(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%esi
xor    %eax,%eax
test   %esi,%esi
cmovs  %eax,%esi
lea    0xebc(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%d\00"
@.str.1 = [35 x i8] c"Number of possible triangles is %d\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 0, i32* %6
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %2)
store i32 1, i32* %3
br label %8
8: ; preds = %33, %0
%9 = load i32, i32* %3
%10 = load i32, i32* %2
%11 = icmp sle i32 %9, %10
br i1 %11, label %12, label %38
12: ; preds = %8
store i32 1, i32* %4
br label %13
13: ; preds = %29, %12
%14 = load i32, i32* %4
%15 = load i32, i32* %3
%16 = icmp sle i32 %14, %15
br i1 %16, label %17, label %32
17: ; preds = %13
store i32 1, i32* %5
br label %18
18: ; preds = %25, %17
%19 = load i32, i32* %5
%20 = load i32, i32* %3
%21 = load i32, i32* %4
%22 = add nsw i32 %20, %21
%23 = icmp slt i32 %19, %22
br i1 %23, label %24, label %28
24: ; preds = %18
br label %25
25: ; preds = %24
%26 = load i32, i32* %5
%27 = add nsw i32 %26, 1
store i32 %27, i32* %5
br label %18
28: ; preds = %18
br label %29
29: ; preds = %28
%30 = load i32, i32* %4
%31 = add nsw i32 %30, 1
store i32 %31, i32* %4
br label %13
32: ; preds = %13
br label %33
33: ; preds = %32
%34 = load i32, i32* %3
%35 = add nsw i32 %34, 1
store i32 %35, i32* %3
%36 = load i32, i32* %6
%37 = add nsw i32 %36, 1
store i32 %37, i32* %6
br label %8
38: ; preds = %8
%39 = load i32, i32* %6
%40 = call i32 @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.1, i64 0, i64 0), i32 %39)
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%d\00"
@.str.1 = [35 x i8] c"Number of possible triangles is %d\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %1)
%4 = load i32, i32* %1
%5 = icmp sgt i32 %4, 0
%6 = select i1 %5, i32 %4, i32 0
%7 = call i32 @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.1, i64 0, i64 0), i32 %6)
ret i32 0
}