Strings.cpp

#include <iostream>

#include <string>

using namespace std;

int main() {

string a,b;

cin>>a;

cin>>b;

int len1= a.size();

int len2= b.size();

cout<<len1<<" "<<len2<<" "<<endl;

cout<<a+b<<endl;

char temp=a[0];

a[0]=b[0];

b[0]=temp;

cout<<a<<" "<<b<<"";

  

    return 0;

}