xa=float(input("Insira as coordenadas do ponto Xa: "))
ya=float(input("Insira as coordenadas do ponto Ya: "))
xb=float(input("Insira as coordenadas do ponto Xb: "))
yb=float(input("Insira as coordenadas do ponto Yb: "))

xm=(xb + xa)/2
ym=(yb+ya)/2



print(round(xm,1))
print(round(ym,1))