FIVE

一个数x各个数位上的数之积记为f(x) <不含前导零> 求[L,R)中满足0<f(x)<=n的数的个数 Input 第一行一个数n 第二行两个数L、R Output 一个数，即满足条件的数的个数 Sample Input 5 19 22 Sample Output 1 Hint   100%     0<L<R<10^18 , n&l...

The cows, as you know, have no fingers or thumbs and thus are unable to play Scissors, Paper, Stone' (also known as 'Rock, Paper, Scissors', 'Ro, Sham, Bo', and a host of other names) in order to make...

A wqb-number, or B-number for short, is a non-negative integer whose decimal form contains the sub- string "13" and can be divided by 13. For example, 130 and 2613 are wqb-numbers, but 143 and 2639 ar...

杭州人称那些傻乎乎粘嗒嗒的人为62（音：laoer）。  杭州交通管理局经常会扩充一些的士车牌照，新近出来一个好消息，以后上牌照，不再含有不吉利的数字了，这样一来，就可以消除个别的士司机和乘客的心理障碍，更安全地服务大众。  不吉利的数字为所有含有4或62的号码。例如：  62315 73418 88914  都属于不吉利号码。但是，61152虽然含有6和2，但不是62连号，所以不属于不吉利数字之...