fuel_type = input()
fuel_tank = int(input())

if fuel_tank >= 25:
    if fuel_type == "Diesel":
        print('You have enough diesel.')
    elif fuel_type == "Gasoline":
        print('You have enough gasoline.')
    elif fuel_type == "Gas":
        print('You have enough gas.')
    else:
        print('Invalid fuel!')
else:
    if fuel_type == "Diesel":
        print('Fill your tank with diesel!')
    elif fuel_type == "Gasoline":
        print('Fill your tank with gasoline!')
    elif fuel_type == "Gas":
        print('Fill your tank with gas!')
    else:
        print('Invalid fuel!')