摘要：
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, 阅读全文
摘要：
The counter-terrorists found a time bomb in the dust. But this time the terrorists improve on the time bomb. The number sequence of the time bomb coun 阅读全文
摘要：
简单题：HDU2089 HDU3652 HDU4734 HDU3555 POJ3252 HigoCoder1033(需要前导0，或者用方法4) 总结： 1，dfs(pos,state,limit,begin_zero) 只是大概方程，根据不同的条件有不同的限制。 2，减少memset可以时间上优化， 阅读全文