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#include <iostream> int main() { using namespace std; cout << "*" << endl; cout << "**" << endl; cout << "***" << endl; cout << "****\n"; return 0; }
#include <iostream> int main() { using namespace std; int x = 5; cout << x << endl; return 0; }
#include <iostream> int main() { using namespace std; int x; cin >> x; cout << x << endl; return 0; }