delete pics to save space

2.10795.cpp

@@ -0,0 +1,32 @@
+#include<cstdio>
+long long f(int* P,int i,int final)
+{
+	if(i==0) return 0;
+	if(P[i]==final) return f(P,i-1,final);
+	return f(P,i-1,6-P[i]-final)+(1LL<<(i-1));
+}
+const int maxn=70;
+int n,start[maxn],finish[maxn];
+int kase;
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	while(scanf("%d",&n)==1&&n)
+	{
+		for(int i=1;i<=n;i++) scanf("%d",start+i);
+		for(int i=1;i<=n;i++) scanf("%d",finish+i);
+		int k=n;
+		while(k>=1&&start[k]==finish[k]) k--;
+		
+		long long res=0;
+		if(k>=1)
+		{
+			int other=6-start[k]-finish[k];
+			res=f(start,k-1,other)+f(finish,k-1,other)+1;
+		}
+		printf("Case %d: %lld\n",++kase,res);
+	}
+	return 0;
+}