def main(x1, y1, x2, y2,x3, y3, x4, y4):
if ((max(x1, x2) >= min(x3, x4) and
min(x1, x2) <= max(x3, x4)) and
(max(y1, y2) >= min(y3, y4) and
min(y1, y2) <= max(y3, y4))
):
# 求向量
ax = (x3-x1)*(y2-y1)-(y3-y1)*(x2-x1)
ay = (x4-x1)*(y2-y1)-(y4-y1)*(x2-x1)
bx = (x1-x3)*(y4-y3)-(y1-y3)*(x4-x3)
by= (x2-x3)*(y4-y3)-(y2-y3)*(x4-x3)
if ax * ay <= 0 and bx * by <= 0:
return "YES"
else:
return "NO"
else:
return 'NO'
if __name__ == '__main__':
arr1 = (input("").split(" "))
arr2 = (input("").split(" "))
x1 = float(((arr1[0].split('('))[1].split(','))[0])
y1 = float((((arr1[0].split('('))[1].split(','))[1].split(')'))[0])
x2 = float(((arr1[1].split('('))[1].split(','))[0])
y2 = float((((arr1[1].split('('))[1].split(','))[1].split(')'))[0])
x3 = float(((arr2[0].split('('))[1].split(','))[0])
y3 = float((((arr2[0].split('('))[1].split(','))[1].split(')'))[0])
x4 = float(((arr2[1].split('('))[1].split(','))[0])
y4 = float((((arr2[1].split('('))[1].split(','))[1].split(')'))[0])
print(main(x1, y1, x2, y2,x3, y3, x4, y4))
