奈何看不懂C++

num = int(input())
s = input()
s = s[:num].lower()
a, b, c = 0, 0, 0
for n in s:
    if n == "a":
        a += 1
    elif n == "b":
        b += 1
    elif n == "c":
        c += 1
t = [("a", a), ("b", b), ("c", c)]
def c_sort(m):
    return (-m[1], m[0])
t.sort(key=c_sort)
for v in t:
    print(v[0], v[1])