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#include <iostream> #include <string> using namespace std; int main() { // Complete the program string a,b; cin>>a>>b; cout<<a.size() <<" " << b.size() <<endl; cout<< a+b << endl; a[0]^= b[0]^= a[0]^= b[0]; cout<<a<<" "<<b; return 0; }
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Strings
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