백준 2775

백준 2775

#include<iostream>
#include<vector>
using namespace std;



int main()
{
    int n;
    cin >> n;
    int result;
    for (int i = 0; i < n; i++)
    {
        int a, b;
        cin >> a;
        cin >> b;
        vector<int> v(b);
        for (int j = 0; j < b; j++)
            v[j] = j + 1;
        for (int j = 0; j < a; j++)
        {
            for (int k = 1; k < b; k++)
            {

                v[k] = v[k] + v[k - 1];
            }
        }
        cout << v[b - 1]<<endl;

    }
}