Monthly electricity cost is calculated using the following rates:
- From kWh $0$ to $50$: $a$ units.
- From kWh $51$ to $100$: $b$ units.
- From kWh $101$ to $150$: $c$ units.
- From kWh $151$ and above: $d$ units.
Given the number of kWh used as $x$ and four integers $a, b, c, d$, calculate the electricity cost.
### Input
- A single line containing five integers $x, a, b, c, d$.
### Output
- Print a single integer representing the total electricity cost.
### Constraints
- $1 \le x, a, b, c, d \le 1000$.
### Example
Input:
```
60 1 2 3 4
```
Output:
```
70
```
