delete pics to save space

history_source/ccf 基础篇/U2/2.4.6.cpp

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+#include<iostream>
+#include<string>
+#define max(a,b) ((a)>(b)?(a):(b))
+using namespace std;
+struct Node
+{
+	int num;
+	Node *next;
+};
+string a,b;
+int maxn(int i,int j)
+{
+	int ans=0;
+	for(;i<a.size()&&j<b.size()&&a[i]==b[j];i++,j++) ans++;
+	return ans;
+}
+int answer()
+{
+	a=a+a.substr(0,a.size()-1);
+	b=b+b.substr(0,b.size()-1);
+	int ans=-1;
+	for(int i=0;i<a.size();i++)
+		for(int j=0;j<b.size();j++)
+			ans=max(ans,maxn(i,j));
+	return ans;
+}
+int main()
+{
+//	freopen("in.txt","r",stdin);
+	ios::sync_with_stdio(0);
+	Node *head,*last,*p;
+	head=last=new Node;
+	while(true)
+	{
+		cin>>a>>b;
+		if(a.size()==1||b.size()==1) break;
+		last->num=answer();
+		last->next=new Node;
+		last=last->next;
+	}
+	p=head;
+	while(p!=last)
+	{
+		cout<<p->num<<endl;
+		p=p->next;
+	}
+	return 0;
+}