def sprinkler_reaches_cell(x, y, sx, sy, r):
dx = sx - x<EOL>dy = sy - y<EOL>return math.sqrt(dx ** <NUM_LIT:2> + dy ** <NUM_LIT:2>) <= r<EOL>
Return whether a cell is within the radius of the sprinkler.

x:  column index of cell
y:  row index of cell
sx:  column index of sprinkler
sy:  row index of sprinkler
r:  sprinkler radius