1723.cpp

杭电 acm部分代码 有兴趣的可以下载 谢谢

#include <iostream>
using namespace std;
int a[33][33];
int main()
{
	int i, j, k;
	for (i = 0; i <= 30; i++)
	{
		a[1][i] = 1;
	}
	for (i = 2; i <= 30; i++)
	{
		for (j = 1; j < i; j++)
		{
			for (k = 1; k <= j; k++)
			{
				a[i][j] += a[i - k][j];
			}
		}
		for (j = i; j <= 30; j++)
		{
			a[i][j] = a[i][i - 1];
		}
	}
	while (cin >> i >> j)
	{
		if (i == 0 && j == 0)
		{
			break;
		}
		cout << a[i][j] << endl;
	}
	return 0;
}