MAVRG - Row Max Average

Given an N by M matrix get the maximum average of a row in it.

Input

First line containing two numbers N and M (1 <= N,M <= 10).

The following N lines each contains M numbers representing the matrix.

The absolute value of values in the matrix won't exceed 100.

 

Output

The maximum average of a row with 2 decimal points.

 

Example

Input:
2 2
1 0
1 1
Output: 1.00

Explanation of sample input:
The average of the first row is (1 + 0) / 2 = 0.5
The average of the second row is (1 + 1) / 2 = 1

Added by:Omar ElAzazy
Date:2011-12-13
Time limit:1s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ASM64
Resource:Own Problem

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