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using namespace std;
int main(){ string a,b; cin >> a >> b; cout << a.size() << " " << b.size() << endl; cout << a+b << endl; swap(a[0], b[0]); cout << a << " " << b << endl; return 0; }
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Strings
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include
using namespace std;
int main(){ string a,b; cin >> a >> b; cout << a.size() << " " << b.size() << endl; cout << a+b << endl; swap(a[0], b[0]); cout << a << " " << b << endl; return 0; }