'''
Created on Sep 13, 2016

@author: Susan
'''

def minutesNeeded (numCakes, capacity):
    if numCakes <= capacity:
        return 10
    elif numCakes % capacity == 0:
        return numCakes/capacity * 10
    
    return 10

if __name__ == '__main__':
    print minutesNeeded(3,3)
    print minutesNeeded(6,3)
    print minutesNeeded(4,3)