class getMin():
    # 實(shí)例方法
    def fun(self, arr, n):
        print(arr[n-1])
    # 類方法
    @classmethod
    def class_fun(cls):
        print("this is class function")
 
if __name__ == "__main__":
    arr = input().strip().split(" ")
    int_arr = []
    for item in arr:
        int_arr.append(int(item))
    n = int(input())
 
    instance = getMin()
    # 用實(shí)例調(diào)用實(shí)例方法
    instance.fun(int_arr, n)
    # 用類調(diào)用方法
    getMin.fun(instance, int_arr, n)
    # 實(shí)例調(diào)用類方法
    instance.class_fun()
    # 類調(diào)用類方法
    getMin.class_fun()