提交时间:2026-01-15 10:51:31

运行 ID: 82480

#include<iostream> using namespace std; int main(){ string s1,s2,s; int n=0; cin>>s1; cin>>s2; s2=s1+s2; cout<<s2<<endl; while(getline(cin,s)){ cout<<s[s.size()-1]; ++n; } cout<<'\n'<<2+n; return 0; }