#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 *, unsigned long);
int /*<<< orphan*/ scanf(char *, ...);
int main() {
  int t;
  scanf("%d", &t);
  while (t--) {
    unsigned long k, a, b;
    scanf("%ld", &k);
    a = k / 2;
    b = k - a;
    printf("%ld\n", a * b);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
lea    -0x8(%rbp),%rsi
mov    $0x0,%al
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
mov    %eax,%ecx
add    $0xffffffff,%ecx
mov    %ecx,-0x8(%rbp)
cmp    $0x0,%eax
je     1199 <main+0x79>
lea    0xea7(%rip),%rdi
lea    -0x10(%rbp),%rsi
mov    $0x0,%al
call   1040 <scanf@plt>
mov    -0x10(%rbp),%rax
shr    $0x1,%rax
mov    %rax,-0x18(%rbp)
mov    -0x10(%rbp),%rax
sub    -0x18(%rbp),%rax
mov    %rax,-0x20(%rbp)
mov    -0x18(%rbp),%rsi
imul   -0x20(%rbp),%rsi
lea    0xe78(%rip),%rdi
call   1030 <printf@plt>
jmp    1141 <main+0x21>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
sub    $0x10,%rsp
lea    0xed0(%rip),%rdi
lea    0x4(%rsp),%rsi
xor    %eax,%eax
call   1040 <scanf@plt>
subl   $0x1,0x4(%rsp)
jb     118e <main+0x6e>
lea    0xeb9(%rip),%r14
lea    0x8(%rsp),%r15
lea    0xeb1(%rip),%rbx
cs nopw 0x0(%rax,%rax,1)
mov    %r14,%rdi
mov    %r15,%rsi
xor    %eax,%eax
call   1040 <scanf@plt>
mov    0x8(%rsp),%rsi
mov    %rsi,%rax
shr    %rax
sub    %rax,%rsi
imul   %rax,%rsi
mov    %rbx,%rdi
call   1030 <printf@plt>
subl   $0x1,0x4(%rsp)
jae    1160 <main+0x40>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret

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

LLVM IR (-O2):
@.str = [3 x i8] c"%d\00"
@.str.1 = [4 x i8] c"%ld\00"
@.str.2 = [5 x i8] c"%ld\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i64
%3 = bitcast i32* %1 to i8*
%4 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = add nsw i32 %5, -1
store i32 %6, i32* %1
%7 = icmp eq i32 %5, 0
br i1 %7, label %20, label %8
8: ; preds = %0
%9 = bitcast i64* %2 to i8*
br label %10
10: ; preds = %8, %10
%11 = call i32 (i8*, ...) @scanf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i64* %2)
%12 = load i64, i64* %2
%13 = lshr i64 %12, 1
%14 = sub i64 %12, %13
%15 = mul i64 %14, %13
%16 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0), i64 %15)
%17 = load i32, i32* %1
%18 = add nsw i32 %17, -1
store i32 %18, i32* %1
%19 = icmp eq i32 %17, 0
br i1 %19, label %20, label %10
20: ; preds = %10, %0
ret i32 0
}