HDU2566

hdu2566.cpp

#include <cstdio>
#include <iostream>
#include <cmath>
#include <cstring>
#include <cctype>
#include <algorithm>
#define sd(a) scanf("%d",&a)
#define sdd(a,b) scanf("%d%d",&a,&b)
#define abs(x) (x>0?x:(0-x))
#define MAX(a,b) (a>b?a:b)
#define MIN(a,b) (a<b?a:b)
using namespace std;

int a1[100][100];
int a2[100][100];
int val[]={0,1,2,5};

void init(int n)
{
    memset(a1,0,sizeof(a1));
    memset(a2,0,sizeof(a2));
    for(int i=0;i<=n;i++)
    {
        a1[i][i]=1;
    }
}

int main()
{
    int t;sd(t);
    while(t--)
    {
        int n,m;
        sdd(n,m);
        init(n);
        for (int i=2;i<=3;i++)
        {
            for (int j=0;j<=m;j++)
            {
                for (int k=0;k+j<=m;k+=val[i])
                {
                    for (int l=0;l+k/val[i]<=n;l++)
                    {
                        a2[k+j][l+k/val[i]] += a1[j][l];
                    }
                }
            }
            for (int j=0;j<=m;j++)
            {
                for (int k=0;k<=n;k++)
                {
                    a1[j][k]=a2[j][k];
                    a2[j][k]=0;
                }
            }
        }
        cout << a1[m][n] << endl;
    }
    return 0;
}