Person in Charge

• cq_irritater
• 035966_L3

Problem Description

Calculate $\lfloor\lg n\rfloor=\lfloor\log _{10} n\rfloor$.

Input Format

A positive integer $n\ (0<n<10^{10^8})$.

Output Format

A non-negative integer $\lfloor\lg n\rfloor$.

Samples

2940514964

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