#include <iostream>
using namespace std;

int getCoin(){
	int coinInput;
	cout<<"Enter the amount of coins you wish to pay.\n";
	cin>>coinInput;
	return coinInput;
}

void calculateCoin(int& totalCoin,int coin){
	totalCoin=coin;
	cout<<"Total coins paid is "<<totalCoin<<endl<<endl;
}

int calculateBalance(int totalCoin){
	int balance;
	balance = totalCoin-120;
	cout<<"Total balance is "<<balance<<endl<<endl;
	return balance;
}

int main(){
	int total = 0,price=120,coins,balance;
	
	do{
		coins = getCoin();
		calculateCoin(total,coins);
	}while(price>total);
	
	balance=calculateBalance(total);
	if(balance>0){
		cout<<"Please collect your balance, "<<balance<<"."<<endl<<endl;
	}
	cout<<"TERIMA KASIH\n";
}