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#include <iostream> #include <string> using namespace std; int main() { string a; cin >> a; if (a.size() % 2 == 0) cout << a << ' ' << a; else cout << "No"; }
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#include <iostream> #include <string> using namespace std; int main() { string a; cin >> a; if (a.size() % 2 == 0) cout << a << ' ' << a; else cout << "No"; }