#include <iostream>
#include <fstream>
#include <limits>

using namespace std;

int main() {
    ifstream in("../input.txt");
    string s;
    int count = 0;
    int min = numeric_limits<int>::max();
    char c;
    string min_s = "";
    string current_s = "";
    while (in >> s){
        current_s += ' ' + s;
        c = s[s.size() - 1];
        count++;
        if(c == '.' || c == '!' || c == '?') {
            if (min > count) {
                min = count;
                min_s = current_s;
            }
            count = 0;
            current_s = "";
        }
    }
    cout << min << endl;
    cout << min_s << endl;
    return 0;
}