#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 *, int *, int *, int *);
int main() {
  int b, b_r, b_s, a, a_s;
  scanf("%d %d %d %d %d", &b, &b_r, &b_s, &a, &a_s);
  printf("%d\n", (int)((b_r - b) * b_s / (double)a_s + a) + 1);
  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
lea    -0xc(%rbp),%rdx
lea    -0x10(%rbp),%rcx
lea    -0x14(%rbp),%r8
lea    -0x18(%rbp),%r9
call   1040 <scanf@plt>
mov    -0xc(%rbp),%eax
sub    -0x8(%rbp),%eax
imul   -0x10(%rbp),%eax
cvtsi2sd %eax,%xmm0
cvtsi2sdl -0x18(%rbp),%xmm1
divsd  %xmm1,%xmm0
cvtsi2sdl -0x14(%rbp),%xmm1
addsd  %xmm1,%xmm0
cvttsd2si %xmm0,%esi
add    $0x1,%esi
lea    0xe92(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x18,%rsp
lea    0xed5(%rip),%rdi
lea    0x14(%rsp),%rsi
lea    0x10(%rsp),%rdx
lea    0xc(%rsp),%rcx
lea    0x8(%rsp),%r8
lea    0x4(%rsp),%r9
call   1040 <scanf@plt>
mov    0x10(%rsp),%eax
sub    0x14(%rsp),%eax
imul   0xc(%rsp),%eax
cvtsi2sd %eax,%xmm0
cvtsi2sdl 0x4(%rsp),%xmm1
divsd  %xmm1,%xmm0
xorps  %xmm1,%xmm1
cvtsi2sdl 0x8(%rsp),%xmm1
addsd  %xmm0,%xmm1
cvttsd2si %xmm1,%esi
add    $0x1,%esi
lea    0xe90(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x18,%rsp
ret

LLVM IR (-O0):
@.str = [15 x i8] c"%d %d %d %d %d\00"
@.str.1 = [4 x i8] c"%d\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
%7 = call i32 @scanf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0), i32* %2, i32* %3, i32* %4, i32* %5, i32* %6)
%8 = load i32, i32* %3
%9 = load i32, i32* %2
%10 = sub nsw i32 %8, %9
%11 = load i32, i32* %4
%12 = mul nsw i32 %10, %11
%13 = sitofp i32 %12 to double
%14 = load i32, i32* %6
%15 = sitofp i32 %14 to double
%16 = fdiv double %13, %15
%17 = load i32, i32* %5
%18 = sitofp i32 %17 to double
%19 = fadd double %16, %18
%20 = fptosi double %19 to i32
%21 = add nsw i32 %20, 1
%22 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %21)
ret i32 0
}

LLVM IR (-O2):
@.str = [15 x i8] c"%d %d %d %d %d\00"
@.str.1 = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
%6 = bitcast i32* %1 to i8*
%7 = bitcast i32* %2 to i8*
%8 = bitcast i32* %3 to i8*
%9 = bitcast i32* %4 to i8*
%10 = bitcast i32* %5 to i8*
%11 = call i32 @scanf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0), i32* %1, i32* %2, i32* %3, i32* %4, i32* %5)
%12 = load i32, i32* %2
%13 = load i32, i32* %1
%14 = sub nsw i32 %12, %13
%15 = load i32, i32* %3
%16 = mul nsw i32 %14, %15
%17 = sitofp i32 %16 to double
%18 = load i32, i32* %5
%19 = sitofp i32 %18 to double
%20 = fdiv double %17, %19
%21 = load i32, i32* %4
%22 = sitofp i32 %21 to double
%23 = fadd double %20, %22
%24 = fptosi double %23 to i32
%25 = add nsw i32 %24, 1
%26 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %25)
ret i32 0
}