Python :

# coding=utf-8
# 星期的名称映射
weekdays = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]

# 快速模幂计算函数
def mod_exp(a, b, mod):
    result = 1
    base = a % mod
    while b > 0:
        if b % 2 == 1:  # 如果b是奇数
            result = (result * base) % mod
        base = (base * base) % mod
        b //= 2
    return result

# 输入
a, b = map(int, input().split())

# 计算 a^b % 7
days_later = mod_exp(a, b, 7)

# 结果是从星期日开始的，星期日为0，所以加上days_later得到结果
result_day = (0 + days_later) % 7

# 输出对应星期的名称
print(weekdays[result_day])