Problems

# Three heroes

# Three heroes

Three heroes went from Brazil to Kievan Rus. They walked at a speed of n meters per minute and must travel a distance of r kilometers. How many days will it take them to overcome the path?

## Input data

Two positive integers n and r (n, r ≤ `10^4`

).

## Output data

Print the number of days for which the heroes will make their hard journey.

## Examples

Input example #1

1 10

Output example #1

7

Input example #2

4 70

Output example #2

13