delete pics to save space

history_source/ccf 基础篇/U2/2.4.4.cpp

@@ -0,0 +1,62 @@
+#include<iostream>
+#include<string>
+using namespace std; 
+string sr1;
+short T1[52],T2[52];
+int hash_(char n)
+{
+	if(n>='A'&&n<='Z') return n-'A';
+	return n-'a'+26;
+}
+void insert(char a){T2[hash_(a)]++;}
+void delete_(char a)
+{
+	T2[hash_(a)]--;
+	if(T2[hash_(a)]<0) T2[hash_(a)]=0;
+}
+bool check()
+{
+	for(int i=0;i<52;i++) if(T1[i]!=T2[i]) return 0;
+	return 1;
+}
+struct Node
+{
+	char c;
+	Node *next;
+};
+int main()
+{
+	freopen("in.txt","r",stdin);
+	ios::sync_with_stdio(0);
+	int ans=0;
+	cin>>sr1;
+	for(int i=0;i<sr1.size();i++)
+	{
+		if(sr1[i]>='A'&&sr1[i]<='Z') T1[sr1[i]-'A']++;
+		else T1[sr1[i]-'a'+26]++;
+	}
+	char ch;
+	Node *head,*last;
+	last=head=new Node;
+	for(int i=0;i<sr1.size();i++)
+	{
+		ch=getchar();
+		insert(ch);
+		last->c=ch;
+		last->next=new Node;
+		last=last->next;
+	}
+	last->next=head;
+	if(check()) ans++;
+	while(ch=getchar(),ch!='\n')
+	{
+		delete_(head->c);
+		head=head->next;
+		last->c=ch;
+		last=last->next;
+		insert(ch);
+		if(check()) ans++;
+	} 
+	cout<<ans<<endl;
+	return 0;
+}