import sys
input = sys.stdin.readline
Overflow = "Overflow"
Zero = "Zero"
Safe = "Safe"
T = int(input())
VXFFQR = [list(map(int, input().split())) for _ in range(T)]
for v, x, f0, fi, q, r in VXFFQR:
    if v-x<(fi-f0)*r:
        print(Overflow)
        continue
    loop = (fi-f0)*r-f0*(q-r)
    if v-x+loop<=0:
        print(Zero)
        continue
    if loop==0:
        print(Safe)    
        continue
    elif loop>0:
        print(Overflow)
    else:
        print(Zero)