Untitled

#include <iostream>
#include <sstream>
using namespace std;

int main() {
    string firstName, middleName, lastName;
    
    // Read the full input line
    getline(cin, firstName, ' ');  // Get the first name
    getline(cin, lastName);        // Get the rest (middle and last name if available)

    // Try to find middle name and last name
    istringstream stream(lastName);
    if (stream >> middleName >> lastName) {
        // If there is a middle name, print the full format
        cout << lastName << ", " << firstName[0] << "." << middleName[0] << "." << endl;
    } else {
        // If no middle name, only print lastName, firstInitial.
        cout << lastName << ", " << firstName[0] << "." << endl;
    }

    return 0;
}