数论
....\PKU 1019 Number Sequence .txt
....\PKU 1023 正负进制.txt
....\PKU 1095.txt
....\PKU 2249 组合数(不预处理).txt
....\PKU 3370 鸽巢原理 .txt
....\POJ 1286 ploya.txt
....\各数位不重复的数.txt
....\狐长.txt
....\素数检测.txt
....\连续串之和.txt