using System;

class MakeChange

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static void Main$()$

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$//$ This program calculates the number of twenties, tens, fives, and ones

$//$ based on the user$-$entered amount and displays the results.

$//$ Prompt the user to enter an amount

Console.WriteLine$("$Enter an amount: $")$;

$//$ Read the amount from the user input

int amount $=$ Convert.ToInt$32($Console$.$ReadLine$())$;

$//$ Calculate the number of twenties

int twenties $=$ amount $/20$;

amount $=$ amount $\%20$;

$//$ Calculate the number of tens

int tens $=$ amount $/10$;

amount $=$ amount $\%10$;

$//$ Calculate the number of fives

int fives $=$ amount $/5$;

amount $=$ amount $\%5$;

$//$ Display the results with the expected format

Console.WriteLine$($$"twenties: $\{$twenties$\}$ tens: $\{$tens$\}$ fives: $\{$fives$\}$ ones: $\{$amount$\}")$;

$\}$

$\}$