Fgt

import random

DEBUG=True

def init_state():
    return {'A': 4, 'B': 8, 'C': 30}

def debug(*args):
    if DEBUG:
        print(args)

def damage(state, target, dam, src):
    debug(state,target,dam,src)
    assert target in state
    debug(src,'hits',target,'for',dam)
    state[target] -= dam
    if state[target] <= 0:
        debug(target,'is destroyed.')
        del state[target]

def flamewaker(state):
    for i in range(2):
        damage(state, random.sample(state.keys(),1)[0], 1, 'Flamewaker')

def test(N, targets, destroyed):
    c = 0
    for i in range(N):
        debug('Test',i)
        s = init_state()
        for target, dam, src in targets:
            damage(s, target, dam, src)
            flamewaker(s)
        if all(d not in s for d in destroyed):
            c += 1
        debug('subtotal',i,c,s)
        debug('')
    return float(c)/N

DEBUG=False
N = 100000
print('a)',test(N, [('B',6,'Fireball')], 'B'))
print('b)',test(N, [('A',3,'Frostbolt')], 'A'))
print('c)',test(N, [('A',3,'Frostbolt'),('B',6,'Fireball')], 'AB'))
print('d)',test(N, [('B',6,'Fireball'),('A',3,'Frostbolt')], 'AB'))