from collections import deque

energy = deque(int(x) for x in input().split())
materials = [int(x) for x in input().split()]
toys = 0
counter = 0

while energy or materials:
    
    current_energy = energy.popleft()
    current_materials = materials.pop()
    
    if current_energy >= current_materials:
        counter += 1
        if counter % 3 == 0:
            if current_energy >= current_materials * 2
            toys += 2
            current_energy = current_energy + 1
            current_energy -= current_materials
            energy.append(current_energy)
            
        
        elif counter % 5 == 0:
            pass
        
        else:
            toys += 1
            current_energy = current_energy + 1
            current_energy -= current_materials
            energy.append(current_energy)
        
            
        
        print(counter)
    
    else:
        pass