请问dell xps8700 值得升级内存和显卡吗?# Hardware - 计算机硬件
B*1
1 楼
How to find a number of 10 digits (non repeated digits) which is a perfect
square? perfect square examples: 9 (3x3) 16 (4x4) 25(5x) etc. Ten digit
number example 1,234,567,890
我只想到用brute force,用0-9 permute 5位数字,然后求平方,看得出来的数字是不
是perfect square,有更加好的办法吗?
thanks
square? perfect square examples: 9 (3x3) 16 (4x4) 25(5x) etc. Ten digit
number example 1,234,567,890
我只想到用brute force,用0-9 permute 5位数字,然后求平方,看得出来的数字是不
是perfect square,有更加好的办法吗?
thanks