문제<\/h2>
Nikolay has a digital clock that displays time in 24-hour format, showing two integers: hours (from $00<\/mn><\/mrow>00<\/math><\/span><\/span> 00<\/span><\/span><\/span><\/span> to 23<\/mn><\/mrow>23<\/math><\/span><\/span> 23<\/span><\/span><\/span><\/span>) and minutes (from 00<\/mn><\/mrow>00<\/math><\/span><\/span> 00<\/span><\/span><\/span><\/span> to 59<\/mn><\/mrow>59<\/math><\/span><\/span> 59<\/span><\/span><\/span><\/span>). For example, the clock can show 00:00<\/code>, 18:42<\/code>, or 23:59<\/code>.<\/p> The clock has two buttons that can be used for manual adjustment:<\/p> Button A sets the clock forward by 1<\/mn><\/mrow>1<\/math><\/span><\/span> 1<\/span><\/span><\/span><\/span> minute. For example, 05:33<\/code> becomes 05:34<\/code>, 16:59<\/code> becomes Button B sets the clock forward by 1<\/mn><\/mrow>1<\/math><\/span><\/span> 1<\/span><\/span><\/span><\/span> hour. For example,$

출력<\/h2>
Print a single integer --- the smallest number of button presses Nikolay needs to adjust the time on his clock.<\/p>