The number of zeros at the end of a number#1357

The number of zeros at the end of a number

1 second

64 megabytes

Very easy

Some natural number $N$ can be decomposed into prime factors, among which $M$ factors are equal to $2$ , and $K$ factors are equal to $5$ . How many zeros does the natural number $N$ end with?

Input

The only line contains two numbers $M$ and $K$ ( $0 \leq M, K \leq 32000$ 0 \leq M, K \leq 32000).

Output

Output a single number — the number of trailing zeros.

Examples

Example 1

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0 \leq M, K \leq 32000