In class, we have studied max$-$heap and its operations. The min$-$heap data structure is

defined similarly, with max replaced by min, greater than replaced by less than, etc. The

operations of min$-$heap is also symmetric to the corresponding operations of the max$-$heap.

This questions is about min$-$heap.

A min$-$heap with capacity $20$ and size $10$ is stored in array A with the following content.

$A[1]=20$

$A[2]=30$

$A[3]=30$

$A[4]=50$

$A[5]=50$

$A[6]=40$

$A[7]=40$

$A[8]=70$

$A[9]=70$

$A[10]=60$

After ExtractMin$($A$),$ what is the value of $A[1]?$