rq112 邮票面值设计(stamp)

rq112 邮票面值设计(stamp)

#include < iostream >
using   namespace  std;

int  n,m;
int  a[ 15 ];
int  ans[ 15 ];
int  Max;
int  DP( int  l){
     int  f[ 1000 ];
    f[ 0 ] = 0 ;
    f[ 1 ] = 1 ;
     int  i = 1 ;
     while (f[i] <= n){
        f[ ++ i] = n + 1 ;
         for ( int  j = 1 ;j <= l; ++ j)
             if (i >= a[j])
                 if (f[i] > f[i - a[j]] + 1 )
                    f[i] = f[i - a[j]] + 1 ;
         if (f[i] == n + 1 )  return  i - 1 ;
    }
     return  i;
}
void  dfs( int  k){
     if (k == m){
         int  tmp = DP(k);
         if (tmp >= Max){
            Max = tmp;
            memcpy(ans,a, sizeof ( int ) * 15 );
        }
    }
     else {
         int  tmp = DP(k) + 1 ;
         for ( int  i = a[k] + 1 ;i <= tmp; ++ i){
            a[k + 1 ] = i;
            dfs(k + 1 );
        }
    }
}
int  main()
{
    scanf( " %d%d " , & n, & m);
    Max = 0 ;
    a[ 1 ] = 1 ;
    dfs( 1 );
     for ( int  i = 1 ;i <= m; ++ i)
        printf( " %d  " ,ans[i]);
    printf( " \nMAX=%d\n " ,Max);
     return   0 ;
}