提出 #31064580

---

ソースコード 拡げる

n = int(input())
a = [0, 0, 0, 0, 0]
for i in range(n):
    s_i = input()
    if s_i[0] == "M":
        a[0] += 1
    if s_i[0] == "A":
        a[1] += 1
    if s_i[0] == "R":
        a[2] += 1
    if s_i[0] == "C":
        a[3] += 1
    if s_i[0] == "H":
        a[4] += 1
answer = 0
for i in range(5):
    for j in range(i + 1, 5):
        for k in range(j + 1, 5):
            answer += a[i] * a[j] * a[k]
print(answer)

提出情報

ジャッジ結果