# Function to simulate the water flow and check if the dam overflows or runs out
def check_dam(V, X, Fo, Fi, Q, R):
    t = 0
    water_level = X

    while True:
        # Check if the dam overflows
        if water_level > V:
            return "Overflow"
        
        # Check if the dam runs out of water
        if water_level <= 0:
            return "Zero"
        
        # Simulate water outflow
        water_level -= Fo
        
        # Check if there's a rainfall event
        if t % Q == 0:
            water_level += Fi
        
        # Increment time
        t += 1

# Read the number of test cases
T = int(input())

# Iterate over each test case
for _ in range(T):
    # Read input parameters for the test case
    V, X, Fo, Fi, Q, R = map(int, input().split())
    
    # Call the function to check the dam status for the current test case
    result = check_dam(V, X, Fo, Fi, Q, R)
    
    # Output the result
    print(result)