|시간 제한||메모리 제한||제출||정답||맞힌 사람||정답 비율|
|1 초||128 MB||102||43||38||46.341%|
The cows, as you know, have no fingers or thumbs and thus are unable to play 'Scissors, Paper, Stone' (also known as 'Rock, Paper, Scissors', 'Ro, Sham, Bo', and a host of other names) in order to make arbitrary decisions such as who gets to be milked first. They can't even flip a coin because it's so hard to toss using hooves.
They have thus resorted to "round number" matching. The first cow picks an integer less than two billion. The second cow does the same. If the numbers are both "round numbers", the first cow wins, otherwise the second cow wins.
A positive integer N is said to be a "round number" if the binary representation of N has as many or more zeroes than it has ones. For example, the integer 9, when written in binary form, is 1001. 1001 has two zeroes and two ones; thus, 9 is a round number. The integer 26 is 11010 in binary; since it has two zeroes and three ones, it is not a round number.
Obviously, it takes cows a while to convert numbers to binary, so the winner takes a while to determine. Bessie wants to cheat and thinks she can do that if she knows how many "round numbers" are in a given range.
Help her by writing a program that tells how many round numbers appear in the inclusive range given by the input (1 <= Start < Finish <= 2,000,000,000).
2 10 1x0 + 1x1 ROUND 3 11 0x0 + 2x1 NOT round 4 100 2x0 + 1x1 ROUND 5 101 1x0 + 2x1 NOT round 6 110 1x0 + 2x1 NOT round 7 111 0x0 + 3x1 NOT round 8 1000 3x0 + 1x1 ROUND 9 1001 2x0 + 2x1 ROUND 10 1010 2x0 + 2x1 ROUND 11 1011 1x0 + 3x1 NOT round 12 1100 2x0 + 2x1 ROUND