到底买不买

def solve(s1, s2):
    from collections import Counter
    c1 = Counter(s1)
    c2 = Counter(s2)
    missing = 0
    for char, count in c2.items():
        if c1[char] < count:
            missing += count - c1[char]
    if missing == 0:
        print(f'Yes {len(s1) - len(s2)}')
    else:
        print(f'No {missing}')