母函数
/* * 母函数 * c1是保存各项质量砝码可以组合的数目 * c2是中间量,保存每一次的情况 */
const int MAXN = 1e4 + 10;
int n;
int c1[MAXN];
int c2[MAXN];
int main()
{
while (cin >> n)
{
for (int i = 0; i <= n; ++i)
{
c1[i] = 1;
c2[i] = 0;
}
for (int i = 2; i <= n; ++i)
{
for (int j = 0; j <= n; ++j)
{
for (int k = 0; k + j <= n; k += i)
{
c2[j + k] += c1[j];
}
}
for (int j = 0; j <= n; ++j)
{
c1[j] = c2[j];
c2[j] = 0;
}
}
cout << c1[n] << endl;
}
return 0;
}