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#include <iostream>
#include <fstream>
#include <vector>
#include <string>
using namespace std;
int main() {
	ifstream in("func.txt");
	ofstream out("result.txt");

	string h;
	int c;
	in >> c;
	string j; int k = 0;
	for (int i = 0; i < c; i++){
		in >> h;
		if (h.size() > k) {
			k = h.size();
			j = h;
		}
	}
	out << k << "\n" << h;
}