delete pics to save space

2.11795.cpp

@@ -0,0 +1,52 @@
+#include<cstdio>
+#include<cstring>
+using namespace std;
+const int maxn=16;
+int T,n;
+int wep[1<<maxn];
+long long dp[1<<maxn];
+char s[maxn+5];
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d",&T);
+	for(int kase=1;kase<=T;kase++)
+	{
+		scanf("%d",&n);
+		scanf("%s",s);
+		memset(wep,0,sizeof(wep));
+		memset(dp,0,sizeof(dp));
+		for(int i=strlen(s)-1;i>=0;i--)
+			wep[0]|=(int)(s[i]-'0')<<i;
+		for(int i=0;i<n;i++)
+		{
+			scanf("%s",s);
+			wep[1<<i]=wep[0];
+			for(int j=strlen(s)-1;j>=0;j--)
+				wep[1<<i]|=(int)(s[j]-'0')<<j;
+		}
+		for(int s=0;s<(1<<n);s++)
+		{
+			wep[s]|=wep[0];
+			for(int i=0;i<n;i++)
+				if(s&(1<<i)) wep[s]|=wep[1<<i];
+		}
+		dp[0]=1;
+		for(int s=0;s<(1<<n);s++)
+		{
+			if(dp[s]==0) continue;
+			for(int i=0;i<n;i++)
+				if((wep[s]&(1<<i))&&!(s&(1<<i)))
+					dp[s|(1<<i)]+=dp[s];
+		}
+		printf("Case %d: %lld\n",kase,dp[(1<<n)-1]);
+	}
+	return 0;
+}
+/*
+0 1 2
+0 2 1
+1 0 2
+*/