noip1996 砝码称重

题目比较简单，这里就不写分析过程了，直接看代码就能看懂

/*
 * =====================================================================================
 *
 *       Filename:  NOIP1996famachengzhong.c
 *
 *    Description:  rt
 *
 *        Version:  1.0
 *        Created:  2014-05-19 14:31:23
 *       Revision:  none
 *       Compiler:  gcc
 *
 *         Author:  Rainboy (mn), 597872644@qq.com
 *        Company:  NONE
 *
 * =====================================================================================
 */

#include <stdio.h>
#include <string.h>


unsigned char a[1001]={0};

int a1,a2,a3,a4,a5,a6;

int main () {

    a[0]=1;
    int i,j,k,l,m,n,count;
    count =0;
    scanf("%d%d%d%d%d%d",&a1,&a2,&a3,&a4,&a5,&a6);
    for (i = 0; i <= a1; i++)
        for (j = 0; j <= a2; j++)
            for (k = 0; k <= a3; k++)
                for (l = 0; l <= a4; l++)
                    for (m = 0; m <= a5; m++)
                        for (n = 0; n <= a6; n++)
                            if (!a[i+2*j+3*k+l*5+m*10+20*n]) {
                                a[i+2*j+3*k+l*5+m*10+20*n]=1;
                                count++;
                            }
                printf("Total=%d",count);


return 0;
}