1

a=int(input())
b=int(input())
n=int(input())
m=int(input())
if(a<b and m>n):
    print(-1)
elif(a>b and m<n):
    print(-1)
else:
    if(a>b):
        minTime=1+a*(n-1)+1
        maxTime=a*n+n-1
    else:
        minTime=1+b*(m-1)+1
        maxTime=b*m+m-1
    print(minTime, maxTime)