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贴了个错误的代码,系统居然让我过了!!!当输入: 3 100 10 10 260 1 2 1 output is supposed to be: 17 而我的代码答案是10,过了! 我很不满,poj系统很不好。 #include<cstdio> #include<cstdlib> #include<cstring> #define MAX 1000000000 int v[101],t[101],c[40001],tp[40001][101]; bool f[40001]; int main() { int i,j,k,n,m,sum,temp,ans; while(scanf("%d%d",&n,&m)!=EOF) { for(i=1;i<=n;i++) scanf("%d",&v[i]); for(sum=0,i=1;i<=n;i++) scanf("%d",&t[i]),sum+=v[i]*t[i]; if(sum>=40000)sum=40000; memset(f,false,sizeof(f)); memset(c,0,sizeof(c)); memset(tp,0,sizeof(tp)); f[0]=true; for(i=1;i<=n;i++) { for(j=v[i];j<=sum;j++) if(f[j-v[i]]) { f[j]=true; if(c[j]==0||c[j]>c[j-v[i]]+1) { c[j]=c[j-v[i]]+1; for(k=1;k<=n;k++) if(k!=i)tp[j][k]=tp[j-v[i]][k]; else tp[j][k]=tp[j-v[i]][k]+1; } } } for (i=1; i <= 20; i++) { printf("%d: %d %d\n", i*10, f[i*10], c[i*10]); } ans=MAX; for(i=m;i<=sum;i++) { if(f[i]&&f[i-m]) { for(temp=0,k=1;k<=n;k++) temp+=abs(tp[i][k]-tp[i-m][k]); if(temp<ans)ans=temp; } } if(ans!=MAX)printf("%d\n",ans); else printf("-1\n"); } return 0; } Followed by:
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