delete pics to save space

2.1352.cpp

@@ -0,0 +1,93 @@
+int dice24[24][6]={
+{2,1,5,0,4,3},
+{2,0,1,4,5,3},
+{2,4,0,5,1,3},
+{2,5,4,1,0,3},
+{4,2,5,0,3,1},
+{5,2,1,4,3,0},
+{1,2,0,5,3,4},
+{0,2,4,1,3,5},
+{0,1,2,3,4,5},
+{4,0,2,3,5,1},
+{5,4,2,3,1,0},
+{1,5,2,3,0,4},
+{5,1,3,2,4,0},
+{1,0,3,2,5,4},
+{0,4,3,2,1,5},
+{4,5,3,2,0,1},
+{1,3,5,0,2,4},
+{0,3,1,4,2,5},
+{4,3,0,5,2,1},
+{5,3,4,1,2,0},
+{3,4,5,0,1,2},
+{3,5,1,4,0,2},
+{3,1,0,5,4,2},
+{3,0,4,1,5,2}
+};
+#include<cstdio>
+#include<cstring>
+#include<string>
+#include<vector>
+#include<algorithm>
+using namespace std;
+const int maxn=4;
+int n,dice[maxn][6],res;
+vector<string> names;
+int ID(char* name)
+{
+	string s(name);
+	int n=names.size();
+	for(int i=0;i<n;i++)
+		if(names[i]==s) return i;
+	names.push_back(s);
+	return n;
+}
+int r[maxn],color[maxn][6];
+void check()
+{
+	for(int i=0;i<n;i++)
+		for(int j=0;j<6;j++) color[i][dice24[r[i]][j]]=dice[i][j];
+	int tot=0;
+	for(int j=0;j<6;j++)
+	{
+		int cnt[maxn*6];
+		memset(cnt,0,sizeof(cnt));
+		int maxface=0;
+		for(int i=0;i<n;i++)
+			maxface=max(maxface,++cnt[color[i][j]]);
+		tot+=n-maxface;
+	}
+	res=min(res,tot);
+}
+void dfs(int d)
+{
+	if(d==n) check();
+	else
+		for(int i=0;i<24;i++)
+		{
+			r[d]=i;
+			dfs(d+1);
+		}
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	while(scanf("%d",&n)==1&&n)
+	{
+		names.clear();
+		for(int i=0;i<n;i++)
+			for(int j=0;j<6;j++)
+			{
+				char name[30];
+				scanf("%s",name);
+				dice[i][j]=ID(name);
+			}
+		res=n*6;
+		r[0]=0;
+		dfs(1);
+		printf("%d\n",res);
+	}
+	return 0;
+}