HDU 2524 矩形A + B 解题心得

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

int f[110][110];
int main()
{
    f[1][1] = 1;
    for (int i =2; i < 110; i++)
    {
        f[1][i] = f[1][i - 1] + i;
        f[i][1] = f[i - 1][1] + i;
    }
    for (int i = 2; i < 110; i++)
    {
        for (int j = 2; j < 110; j++)
        {
            f[i][j] = f[i][1] * f[1][j];
        }
    }
    
    int t;
    cin >> t;
    while (t--)
    {
        int n, m;
        cin >> n >> m;
        cout << f[n][m] << endl;
    }

    return 0;
}