F_S的博客

1060Leftmost DigitTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 18433 Accepted Submission(s): 7238Problem DescriptionGiven a positive inte

1098Ignatius’s puzzleTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 9936 Accepted Submission(s): 6961Problem DescriptionIgnatius is poor at

1163 Eddy’s digital Roots Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 6896 Accepted Submission(s): 3776Problem Description The digita

1164Eddy’s research ITime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 10194 Accepted Submission(s): 6302Problem DescriptionEddy’s interest is

1196 Lowest Bit Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 12341 Accepted Submission(s): 9012Problem Description Given an positive i

出自原文九余数定理(同余定理) 我们都知道对于十进制数，只要这个数能除尽3/9则他个位数字之和也能除尽3/9,以前只知道用没有证明过，下面来简单证明一下。 对于十进制数，举个简单的例子，这个数是abcd,他表示的大小就是 x=1000*a+100*b+10*c+d , 我们对他进行转化 x=999*a+99*b+9*c+(a+b+c+d)

2053Switch GameTime Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 18846 Accepted Submission(s): 11551Problem DescriptionThere are many lamps in