# include<stdio.h> #include<iostream> using namespace std; int main(){ string s,tag,sub; while(getline(cin,s)){ cin>>sub; cin>>tag; int index = 0; int count = 0; while((index=s.find(sub,index))<s.length())//迭代 { if((s[index-1]==' '&&s[index+sub.length()]...