HI-ARC=?

Time limit1sMemory limit1024 MB

Summary

The task reads five integers H, I, A, R, C and prints H times I minus A times R times C.

Level: Easy1 of 10
Topics: Implementation, Math
Solved: No attempts yet

Problem

The HI-ARC Club enjoys a unique tradition of expressing everyday sentences as formulas. The HI-ARC formula is a special formula recently developed by the club, and it is evaluated with the following rules.

The product of $H$ and $I$ is the first term.
The product of $A$ , $R$ , and $C$ is the second term.
The result is the first term minus the second term.

When a number for each letter is given, print the result.

Input

The first line contains the values for $H, I, A, R, C$ in that order, separated by spaces ( $0 \leq H,I,A,R,C \leq 100$ , and $H,I,A,R,C$ are integers).

Output

Print the result of evaluating the formula.

Examples1

Example 1
Input
```
4 6 1 2 3
```
Expected output
```
18
```