There is a three-digit number, move its single digit to one hundred, and move the rest of the digits back to a new three-digit number. The doubling of the original three-digit number is exactly equal to adding 1 to the new three-digit number, then the original three-digit number What is the three digit number.
有一个三位数，把它的个位数字移一百位上，其余数字往后移成了一个新的三位数，原三位数的二倍恰等于新三位数加1，则原三位数是多少．
<result>316</result>