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hdu 2069 Coin Change

DreamSky — Sat, 25 Apr 2009 02:33:00 GMT

http://acm.hdu.edu.cn/showproblem.php?pid=2069

//1307156 2009-04-25 10:29:15 Accepted 2069 15MS 464K 678 B C++ no way
#include<iostream>
using namespace std;
int main()
{
    int i,j,k,t;
    int nums[251]={0},coins[5]={1,5,10,25,50};
    int ans[251][101]={0},ansTemp[251][101]={0};
    //…[i][j]表示i分钱由j个硬币组成的�Ҏ��?/span>
    ans[0][0] = 1;

    for(i=1;i<=5;i++)
    {
        for(j=0;j<=250;j++)
            for(k=0;k*coins[i-1]+j<=250;k++)
                for(t=0;t+k<101;t++)//�ȝ��币数要��于100
                    ansTemp[k*coins[i-1]+j][t+k] += ans[j][t];
        for(j=0;j<=250;j++)
            for(t=0;t<101;t++)
            {
                ans[j][t] = ansTemp[j][t];
                ansTemp[j][t]=0;
            }
    }

    for(i=1;i<=250;i++)
        for(j=1;j<=100;j++)
            nums[i] += ans[i][j];
    nums[0] = 1;
    while(cin>>i)
        cout<<nums[i]<<endl;
    return 0;
}

DreamSky 2009-04-25 10:33 发表评论

hdu 1709 The Balance

DreamSky — Sat, 25 Apr 2009 01:18:00 GMT

http://acm.hdu.edu.cn/showproblem.php?pid=1709

//1306899 2009-04-25 09:13:59 Accepted 1709 78MS 336K 805 B C++ no way
#include<iostream>
#include<cmath>
using namespace std;
int main()
{
    int n;
    while(cin>>n && n>0)
    {
        int i,j,k,N=0;
        int w[101],temp[10001],outs[10001];
        for(i=1;i<=n;i++)
        {
            scanf("%d",&w[i]);
            N += w[i];
        }
        for(i=0;i<=N;i++)
            temp[i] = outs[i] = 0;
        outs[0] = 1;
        outs[w[1]] = 1;
        for(i=2;i<=n;i++)
        {
            for(j=0;j<=N;j++)
            {
                if(outs[j] == 1)
                {
                    temp[j] = 1;//标志j出现�q?/span>
                    temp[j+w[i]] = 1;//加一�?/span>
                    temp[abs(j-w[i])] = 1;//减一�?/span>
                }
            }
            for(j=0;j<=N;j++)
            {
                outs[j] = temp[j];
                temp[j] = 0;
            }
        }
        k = 0;
        for(i=1;i<=N;i++)
            if(outs[i] == 0)
                temp[k++] = i;
        printf("%d\n",k);
        if(k>0)
        {
            printf("%d",temp[0]);
            for(i=1;i<k;i++)
                 printf(" %d",temp[i]);
            printf("\n");
        }
    }
    return 0;
}

DreamSky 2009-04-25 09:18 发表评论

hdu 1171 Big Event in HDU

DreamSky — Fri, 24 Apr 2009 10:11:00 GMT

http://acm.hdu.edu.cn/showproblem.php?pid=1171

//1305008 2009-04-24 17:36:03 Accepted 1171 2015MS 1260K 838 B C++ no way
//1305033 2009-04-24 17:42:02 Accepted 1171 796MS 760K 664 B C++ no way
#include<iostream>
#include<cmath>
using namespace std;
int outs[250002];
int main()
{
    int n;
    while(cin>>n && n>=0)//A test case starting with a negative integer terminates input
        //and this test case is not to be processed �q�句话让我错了很多次 �Q�值得注意
    {
        int i,j,k,s,N=0,t;
        int w[51],num[51];
        for(i=1;i<=n;i++)
        {
            scanf("%d%d",&w[i],&num[i]);
            N += w[i] * num[i];
        }
        t = N/2; //取其一�?/span>

        for(i=0;i<=N;i++)
            outs[i] =  0;

        for(i=0;i<=num[1];i++)
            outs[i*w[1]] = 1;

        for(i=2;i<=n;i++)
        {
            for(j=0;j<=t;j++)
            {
                for(k=0,s=0;s<=num[i] && k+j<=t; k+=w[i],s++)
                    if( outs[j] == 1)
                        outs[k+j] = 1;
            }
        }
        for(i = t; i>=0 ;i--)
            if(outs[i] !=0 )
                break;
        printf("%d %d\n",i + N-2*i ,i);
    }
    return 0;
}

DreamSky 2009-04-24 18:11 发表评论

hdu 1085 Holding Bin-Laden Captive!

DreamSky — Fri, 24 Apr 2009 08:42:00 GMT

http://acm.hdu.edu.cn/showproblem.php?pid=1085

//1304713 2009-04-24 16:34:31 Accepted 1085 156MS 324K 728 B C++ no way
#include<iostream>
using namespace std;
int main()
{
    int num[3];
    int t[3]={1,2,5};
    while(cin>>num[0]>>num[1]>>num[2])
    {
        if(num[0] == 0 && num[1] == 0 && num[2] == 0)
            break;

        int outs[8005],temp[8005],i,j,k,s,N=0;

        for(i=0;i<3;i++)
            N += t[i] * num[i];

        for(i=0;i<=N+1;i++)
            outs[i] = temp[i] = 0;

        for(i=0;i<=num[0];i++) //一定要有底�?/span>
            outs[i] = 1;

        for(i=1;i<=2;i++) //
        {
            for(j=0;j<=N;j++)
            {
                   if(outs[j] == 0)
                        continue;
                for(k=0,s=0; k+j <= N && s<=num[i] ;s++, k+=t[i]) //注意个数的控制~
                {
                    temp[k+j] += outs[j];
                }
            }
            for(j=0;j<=N;j++)
            {
                outs[j] = temp[j];
                temp[j] = 0;
            }
        }

        for(i=1;i<=N+1;i++)
            if(outs[i] == 0)
                break;
        cout<<i<<endl;
    }
    return 0;
}

DreamSky 2009-04-24 16:42 发表评论

hdu 1028 Ignatius and the Princess III

DreamSky — Fri, 24 Apr 2009 06:55:00 GMT

http://acm.hdu.edu.cn/showproblem.php?pid=1028

//1304357 2009-04-24 14:49:41 Accepted 1028 15MS 260K 526 B C++ no way
#include<iostream>
using namespace std;
int main()
{
    int i,j,k,n;
    while(cin>>n)
    {
        int temp[121],outs[121];
        for(i=0; i<=n; i++) //只有1的时�?/span>
        {
            outs[i] = 1;
            temp[i] = 0;
        }
        for(i=2;i<=n;i++)
        {
            for(j=0;j<=n;j++)
            {
                for(k=0;k+j<=n;k+=i)
                {
                    temp[k+j] += outs[j];
                }
            }
            for(j=0;j<=n;j++)
            {
                outs[j] = temp[j];
                temp[j] = 0;
            }
        }
        cout<<outs[n]<<endl;
    }
    return 0;
}

DreamSky 2009-04-24 14:55 发表评论

hdu 1398 Square Coins

DreamSky — Fri, 24 Apr 2009 06:23:00 GMT

http://acm.hdu.edu.cn/showproblem.php?pid=1398

//1304230 2009-04-24 14:13:00 Accepted 1398 0MS 260K 523 B C++ no way
#include<iostream>
using namespace std;
int main()
{
    int squares[17]={1,4,9,16,25,36,49,64,81,100,121,144,169,196,225,256,289};
    //所有硬币的�U�类及面�?/span>
    int i,j,k;
    int num[301],temp[301];
    for(i=0;i<=300;i++)
    {
        num[i] = 1;
        temp[i] = 0;
    }
    for(i=2; i<=17; i++)
    {
        for(j=0;j<=300;j++)
        {
            for(k=0 ; k+j<=300; k+=squares[i-1])
            {
                temp[j+k] += num[j];
            }
        }
        for (j=0;j<=300;j++)
        {
            num[j] = temp[j];
            temp[j]=0;
        }
    }
    while(cin>>k && k)
    {
        cout<<num[k]<<endl;
    }
    return 0;
}

DreamSky 2009-04-24 14:23 发表评论