zb=[]
z=input()
while(z!="end"):
    x,y=z.split(',')
    zb.append([eval(x),eval(y)])
    z=input()
for j in range(0,len(zb)):
    s=0
    for q in zb:
        s=s+((zb[j][0]-q[0])**2+(zb[j][1]-q[1])**2)**0.5
    if s<mins:
        mins=s
        j=i
print("最小值为第{}点坐标为({},{})距离之和为{:.2f}".format(i+1,zb[i][0],zb[i][1],mins))