C++

#include "iostream"
#include "fstream"
#include "string"
#include "cstring"
#include "vector"

using namespace std;

#define characters ((arr[i][j]>='A' && arr[i][j]<='z') || (arr[i][j]>='0' && arr[i][j]<='9') || arr[i][j]=='-')
#define endOfSentence (arr[i][j]!='.' && arr[i][j]!='?' && arr[i][j]!='!')

int main () {

    ifstream in("input.txt");
    
    string sentence = "";
    string word = "";

    vector <string> arr;

    while (!in.eof()) {
        string tmp;
        getline(in,tmp);
        arr.push_back(tmp);
    }


    string currentWord = "";

    for (int i=0;i<arr.size();i++) {
        for (int j=0;j<arr[i].size();j++) {
            if (arr[i][j] != ' ' && characters) {
                currentWord += arr[i][j];
            } else {
                if (currentWord.size() > word.size()) {
                    word = currentWord;
                }
                currentWord = "";
            }
        }
    }

    string currentSentence = "";

    for (int i=0;i<arr.size();i++) {
        for (int j=0;j<arr[i].size();j++) {
            if (endOfSentence) {
                currentSentence += arr[i][j];
            } else {
                if (currentSentence.size() > sentence.size()) {
                    currentSentence += arr[i][j];
                    sentence = currentSentence;
                }
                currentSentence = "";
            }
        }
    }


    cout << word << endl;
    cout << sentence;

    return 0;}