hdu1114 PiggyBank

http://acm.hdu.edu.cn/showproblem.php?pid=1114

DP,完全背包

#include <stdio.h>

int main()
{
    int t, i, j, n, m, m1, v, w;
    int dp[10010];
    scanf("%d", &t);
    while(t-- && scanf("%d%d%d", &m1, &m, &n))
    {
        m -= m1;
        dp[0] = 0;
        for(i=1; i<=m; i++)
        {
            dp[i] = 12345678;
        }
        for(i=1; i<=n; i++)
        {
            scanf("%d%d", &v, &w);
            for(j=w; j<=m; j++)
            {
                if(dp[j-w]+v < dp[j])
                {
                    dp[j] = dp[j-w]+v;
                }
            }
        }
        if(dp[m] == 12345678)
        {
            printf("This is impossible.\n");
        }
        else
        {
            printf("The minimum amount of money in the piggy-bank is %d.\n", dp[m]);
        }
    }
    return 0;
}