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先对a[]排序In Reply To:是不是有什么trick? 我怎么就一直wrong? Posted by:bmexue at 2006-12-26 10:25:19 > #include <iostream>
> using namespace std;
>
> int V,D,d[31],sum[31];
> unsigned int dp[31][1001];
> void work()
> {
> memset(dp,0,sizeof(dp));
> for(int i=1;i<=V;i++)
> {
> for(int j=1;j<=D;j++)
> {
> if( j>= sum[i] )
> dp[i][j] = 1;
> else
> {
> if( j>= d[i] )
> {
> if( dp[i-1][j-d[i]] >0 )
> dp[i][j] = dp[i-1][j-d[i]] + dp[i-1][j];
> else
> dp[i][j] = 1 + dp[i-1][j];
> }
> else
> dp[i][j] = dp[i-1][j];
> }
> }
> }
> }
>
> int main()
> {
> freopen("C:\\ACMData.txt","r",stdin);
> int T,i,k=1; scanf("%d",&T);
> while(T)
> {
> scanf("%d%d",&V,&D);
> for(i=1;i<=V;i++) scanf("%d", &d[i]);
> sum[0] =0;
> for(i=1;i<=V;i++) sum[i] = sum[i-1] + d[i];
> work(); printf("%d %u\n",k++,dp[V][D]);
>
> T--;
> }
> return 0;
> }
>
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