delete pics to save space

2.12105.cpp

@@ -0,0 +1,49 @@
+#include<cstdio>
+using namespace std;
+const int maxn=105;
+const int maxm=3005;
+const int needs[]={6,2,5,5,4,5,6,3,7,6};
+int n,m,kase;
+int dp[maxn][maxm];
+int p[maxn][maxm];
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	while(scanf("%d",&n)==1&&n)
+	{
+		scanf("%d",&m);
+		printf("Case %d: ",++kase);
+		for(int i=0;i<=n;i++)
+			for(int j=0;j<m;j++)
+			{
+				int &ans=dp[i][j];
+				ans=p[i][j]=-1;//init
+				if(!j) ans=0;
+				for(int d=9;d>=0;d--)
+					if(i>=needs[d])
+					{
+						int t=dp[i-needs[d]][(j*10+d)%m];
+						if(t>=0&&t+1>ans)
+						{
+							ans=t+1;
+							p[i][j]=d;
+						}
+					}
+			}
+		if(p[n][0]==-1) printf("-1\n");
+		else
+		{
+			int i=n,j=0;
+			for(int d=p[i][j];d>=0;d=p[i][j])
+			{
+				printf("%d",d);
+				i-=needs[d];
+				j=(j*10+d)%m;
+			}
+			printf("\n");
+		}
+	}
+	return 0;
+}