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Problems

Three heroes

Three heroes

Time limit 1 second
Memory limit 128 MiB

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, r10^4).

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
Author Yaroslav Medvedev
Source YarikPro