let messagesAmount = gets();
let minutesAmount = gets();
let additionalMinutes = 0;
let additionalMessages = 0;
let totalBill = 12; //starting plan cost; changes if the additionalMinutes and/or additionalMessages >= 1;
let taxes = 0;

if(messagesAmount > 20){
    additionalMessages = messagesAmount - 20;
}
if(minutesAmount > 60){
    additionalMinutes = minutesAmount - 60;
}
taxes = Math.round((((additionalMessages * 0.06) + (additionalMinutes * 0.10)) * 0.2 * 100).toFixed(1));
let additionalMinutesCost = additionalMinutes * 0.10;
let additionalMessagesCost = additionalMessages * 0.06;
totalBill += additionalMessagesCost + additionalMinutesCost + taxes;

print(`${additionalMessages} additional messages for ${additionalMessagesCost.toFixed(2)} levas`);
print(`${additionalMinutes} additional messages for ${additionalMinutesCost.toFixed(2)} levas`);
print(`${(taxes / 100).toFixed(2)} additional taxes`);
print(`${totalBill} total bill`);