# Read topographic height matrix from a specified input stream.
#
# Returns a 5-tuple:
#
#  nrows, ncols, heights, maxheight, minheight = read_heights(sys.stdin)
#
# Where:
#  nrows and ncols are what you think
#  heights[i][j] is a 2D matrix (list-of-lists) with height numbers
#  maxheight and minheight are what you think
#
#
def read_heights(stream):
    nrows = int(stream.readline())
    ncols = int(stream.readline())
    heights = [ncols*[0] for i in xrange(nrows)]
    for j in xrange(ncols):
        for i in xrange(nrows):
            heights[i][j] = float(stream.readline())
    maxheight = max(heights[0])
    minheight = min(heights[0])
    for heightrow in heights:
        maxheight = max(maxheight, max(heightrow))
        minheight = min(minheight, min(heightrow))
    print "rows=%d cols=%d maxheight=%d minheight=%d" % \
        (nrows, ncols, maxheight, minheight)
    return (nrows, ncols, heights, maxheight, minheight)