Point of medians intersection

Find the intersection point of medians in the given triangle.

Input

The coordinates of the three vertices of triangle (first the coordinates of the first vertex, then the second, then the third). Coordinates are the pairs of integers not exceeding 10^4 by absolute value.

Output

Print two numbers - the coordinates of the point of intersection of the medians of this triangle with an accuracy of 6 digits after the decimal point.

Examples