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#include <iostream> #include <string> #include <fstream> using namespace std; string result; string words(string str) { for (int i = 0; i < str.length(); i++) { if (str[i] != '_') result[i] = str[i]; } return result; } int main() { string str; int n; cin >> n; result.resize(n + 1); for (int i = 0; i < n; i++) { cin >> str; words(str); } cout << result << endl; }