delete pics to save space

2.140.cpp

@@ -0,0 +1,59 @@
+#include<cstdio>
+#include<cstring>
+#include<algorithm>
+using namespace std;
+bool e[26][26];
+char str[1000];
+int a[10],b[10],cnt,vis[26];
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	while(scanf("%s",str)==1&&str[0]!='#')
+	{
+		memset(e,0,sizeof(e));
+		memset(vis,0,sizeof(vis));
+		cnt=0;
+		char *c=str,f;
+		while(*c!=0)
+		{
+			f=*c;
+			if(!vis[f-'A'])
+			{
+				vis[f-'A']=1;
+				a[cnt++]=f-'A';
+			}
+			c+=2;
+			while(*c!=0&&*c!=';')
+			{
+				if(!vis[*c-'A'])
+				{
+					vis[*c-'A']=1;
+					a[cnt++]=*c-'A';
+				}
+				e[f-'A'][*c-'A']=e[*c-'A'][f-'A']=1;
+				c++;
+			}
+			if(*c==';') c++;
+		}
+		sort(a,a+cnt);
+		int res=1<<30,now;
+		do
+		{
+			now=0;
+			for(int i=0;i<cnt;i++)
+				for(int j=i+1;j<cnt;j++)
+					if(e[a[i]][a[j]]) now=max(now,j-i);
+			if(now<res)
+			{
+				res=now;
+				memcpy(b,a,sizeof(b));
+			}
+		}
+		while(next_permutation(a,a+cnt));
+		for(int i=0;i<cnt;i++) printf("%c ",b[i]+'A');
+		printf("-> %d\n",res);
+	}
+	return 0;
+}