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贡献RE三次-,- 才发现算最极限的话,dp应该开10000以上。附代码。

Posted by Gentleh at 2012-12-25 23:57:27 on Problem 3211
#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>

using namespace std;

struct node
{
    int all,num;
    int cost[105];
};

node sum[15];
char color[15][15];

int main()
{
    int M,N;
    while(scanf("%d%d",&M,&N)!=EOF)
    {
        if(M==0 && N==0)
            break;
        for(int i=1;i<=M;i++)
        {
            cin>>color[i];
            sum[i].all=0;
            sum[i].num=0;
            for(int j=0;j<105;j++)
                sum[i].cost[j]=0;
        }
        for(int i=1;i<=N;i++)
        {
            int value;
            char temp[15];
            cin>>value>>temp;
            for(int j=1;j<=M;j++)
            {
                if(strcmp(temp,color[j])==0)
                {
                    sum[j].all+=value;
                    sum[j].cost[sum[j].num]=value;
                    sum[j].num ++;
                    break;
                }
            }
        }
        int ans=0;
        for(int i=1;i<=M;i++)
        {
            if(sum[i].all==0)
                continue;
            int tsum=sum[i].all/2;
            int dp[10005]={0};
            for(int j=0;j<sum[i].num;j++)
            {
                for(int k=tsum;k>=sum[i].cost[j];k--)
                    dp[k]=max(dp[k],dp[k-sum[i].cost[j]]+sum[i].cost[j]);
            }
            ans += (sum[i].all-dp[tsum]);
        }
        printf("%d\n",ans);
    }
    return 0;
}


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