#P988E. Divisibility by 25
-
ID: 4284
Type: RemoteJudge
1000ms
256MiB
Tried: 0
Accepted: 0
Difficulty: (None)
Uploaded By:
Hydro
Tags> Divisibility by 25
No submission language available for this problem.
Description
You are given an integer $n$ from $1$ to $10^{18}$ without leading zeroes.
In one move you can swap any two adjacent digits in the given number in such a way that the resulting number will not contain leading zeroes. In other words, after each move the number you have cannot contain any leading zeroes.
What is the minimum number of moves you have to make to obtain a number that is divisible by $25$? Print -1 if it is impossible to obtain a number that is divisible by $25$.
The first line contains an integer $n$ ($1 \le n \le 10^{18}$). It is guaranteed that the first (left) digit of the number $n$ is not a zero.
If it is impossible to obtain a number that is divisible by $25$, print -1. Otherwise print the minimum number of moves required to obtain such number.
Note that you can swap only adjacent digits in the given number.
Input
The first line contains an integer $n$ ($1 \le n \le 10^{18}$). It is guaranteed that the first (left) digit of the number $n$ is not a zero.
Output
If it is impossible to obtain a number that is divisible by $25$, print -1. Otherwise print the minimum number of moves required to obtain such number.
Note that you can swap only adjacent digits in the given number.
Samples
5071
4
705
1
1241367
-1
Note
In the first example one of the possible sequences of moves is 5071 $\rightarrow$ 5701 $\rightarrow$ 7501 $\rightarrow$ 7510 $\rightarrow$ 7150.