A. Maximum in Table

An n × n table a is defined as follows:

The first row and the first column contain ones, that is: ai, 1 = a1, i = 1 for all i = 1, 2, …, n.
Each of the remaining numbers in the table is equal to the sum of the number above it and the number to the left of it. In other words, the remaining elements are defined by the formula ai, j = ai - 1, j + ai, j - 1.
These conditions define all the values in the table.

You are given a number n. You need to determine the maximum value in the n × n table defined by the rules above.

Input
The only line of input contains a positive integer n (1 ≤ n ≤ 10) — the number of rows and columns of the table.

Output
Print a single line containing a positive integer m — the maximum value in the table.

Examples
inputCopy
1
outputCopy
1
inputCopy
5
outputCopy
70
Note
In the second test the rows of the table look as follows:

{1, 1, 1, 1, 1}, 
{1, 2, 3, 4, 5}, 
{1, 3, 6, 10, 15}, 
{1, 4, 10, 20, 35}, 
{1, 5, 15, 35, 70}.

#include <iostream>
using namespace std;
///手算,在前一个数基础上,只算底部一条边就行
int main()
{
    int n;
    while(cin >> n)
    {
        switch(n)
        {
        case 1 :
            cout << "1" << '\n';
            break;
        case 2 :
            cout << "2" << '\n';
            break;
        case 3 :
            cout << "6" << '\n';
            break;
        case 4 :
            cout << "20" << '\n';
            break;
        case 5 :
            cout << "70" << '\n';
            break;
        case 6 :
            cout << "252" << '\n';
            break;
        case 7 :
            cout << "924" << '\n';
            break;
        case 8 :
            cout << "3432" << '\n';
            break;
        case 9 :
            cout << "12870" << '\n';
            break;
        case 10 :
            cout << "48620" << '\n';
            break;
        }
    }
    return 0;
}

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我是没经验的毕业生,这啥情况啊会不会是hr在刷kpi
JamesGosli...:字节boss属于是群发了,我都快入职字节了,其他部门还在和我boss打招呼
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湫湫湫不会java:先投着吧,大概率找不到实习,没实习的时候再加个项目,然后把个人评价和荣誉奖项删了,赶紧成为八股战神吧,没实习没学历,秋招机会估计不多,把握机会。或者说秋招时间去冲实习,春招冲offer,但是压力会比较大
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