Count Numbers with Even Number of Digits

Given an integer array nums, count the elements whose decimal representation has an even number of digits. The decimal representation of 0 has one digit.

输入格式

The first line contains n (1≤n≤100000), and the second line contains n integers (0≤nums[i]≤10^9). The length and value constraints are common ranges adopted by this site; digit counts are based on the decimal representation.

输出格式

Output the number of elements with an even number of digits.

样例 1

输入：

5
12 345 2 6 7896

输出：

2

样例 2

输入：

4
555 901 482 1771

输出：

1

样例 3

输入：

4
0 10 100 1000

输出：

2