POJ-1017 Packets

Packets

Time Limit: 1000MS		Memory Limit: 10000K
Total Submissions: 36663		Accepted: 12207

Description

A factory produces products packed in square packets of the same height h and of the sizes 1*1, 2*2, 3*3, 4*4, 5*5, 6*6. These products are always delivered to customers in the square parcels of the same height h as the products have and of the size 6*6. Because of the expenses it is the interest of the factory as well as of the customer to minimize the number of parcels necessary to deliver the ordered products from the factory to the customer. A good program solving the problem of finding the minimal number of parcels necessary to deliver the given products according to an order would save a lot of money. You are asked to make such a program.

Input

The input file consists of several lines specifying orders. Each line specifies one order. Orders are described by six integers separated by one space representing successively the number of packets of individual size from the smallest size 1*1 to the biggest size 6*6. The end of the input file is indicated by the line containing six zeros.

Output

The output file contains one line for each line in the input file. This line contains the minimal number of parcels into which the order from the corresponding line of the input file can be packed. There is no line in the output file corresponding to the last ``null'' line of the input file.

Sample Input

0 0 4 0 0 1 
7 5 1 0 0 0 
0 0 0 0 0 0

Sample Output

2 
1

  1 //代码一：----纯模拟的贪心算法，每次都尽最大的填充
  2 #include<stdio.h>
  3 int main()
  4 {
  5     int i,count;
  6     int a[7];
  7     while(1)
  8     {
  9         for(i=1;i<=6;++i)
 10             scanf("%d",&a[i]);
 11         count=0;
 12         if(a[1]||a[2]||a[3]||a[4]||a[5]||a[6])
 13         {
 14             count=a[6]+a[5]+a[4]+(a[3]+3)/4;     //(a[3]+3)/4可向上取绝对值
 15             a[1]-=11*a[5];
 16             if(a[4])
 17             {
 18                 if(a[2]<5*a[4])
 19                 {
 20                     a[1]-=20*a[4]-a[2]*4;
 21                     a[2]=0;
 22                 }
 23                 else
 24                     a[2]-=5*a[4];
 25             }
 26             if(a[3])
 27             {
 28                 switch (a[3]%4)
 29                 {
 30                     case 0: 
 31                         break;
 32                     case 1:
 33                         {
 34                             if(a[2]<5)
 35                             {
 36                                 a[1]-=(27-a[2]*4);
 37                                 a[2]=0;
 38                             }
 39                             else
 40                             {
 41                                 a[2]-=5;
 42                                 a[1]-=7;
 43                             }
 44                             break;
 45                         }
 46                     case 2:
 47                         {
 48                             if(a[2]<3)
 49                             {
 50                                 a[1]-=(18-4*a[2]);
 51                                 a[2]=0;
 52                             }
 53                             else
 54                             {
 55                                 a[2]-=3;
 56                                 a[1]-=6;
 57                             }
 58                             break;
 59                         }
 60                     default:
 61                         {
 62                             if(a[2])
 63                             {
 64                                 a[2]--;
 65                                 a[1]-=5;
 66                             }
 67                             else
 68                                 a[1]-=9;
 69                             break;
 70                         }        
 71                 }
 72             }
 73             if(a[2]>0)
 74             {
 75                 count+=(a[2]+8)/9;
 76                 a[1]-=36-(a[2]%9)*4;
 77             }
 78             if(a[1]>0)
 79                 count+=(a[1]+35)/36;
 80             printf("%d\n",count);
 81         }
 82         else
 83             break;
 84     }
 85     return 0;
 86 }
 87 
 88 //copy代码：------真短
 89 #include<stdio.h>
 90 int main()
 91 {
 92     int n,a,b,c,d,e,f,x,y;
 93     int u[4]={0,5,3,1};
 94     while(1)
 95     {
 96         scanf("%d%d%d%d%d%d",&a,&b,&c,&d,&e,&f);
 97         if(a==0&&b==0&&c==0&&d==0&&e==0&&f==0)
 98             break;
 99         n=d+e+f+(c+3)/4;
100         y=5*d+u[c%4];
101         if(b>y)
102             n+=(b-y+8)/9;
103         x=36*n-36*f-25*e-16*d-9*c-4*b;
104         if(a>x)
105             n+=(a-x+35)/36;
106         printf("%d\n",n);
107     }
108     return 0;
109 }

posted on 2012-08-23 11:01 可笑痴狂阅读(341) 评论(0) 编辑收藏举报