za durtata

// 1

#include <iostream>
#include <vector>

int main() {
    int inst1, inst2, inst3, inst4, inst5, inst6;
    std::vector<int> numbers;
    int l, a=1,o=0;

    do {
        a++;
        std::cin >> l;
        numbers.push_back(l);
    } while (a <= 3);

    inst1 = -numbers[0] + numbers[1] * numbers[2];
    inst2 = -numbers[0] * numbers[1] + numbers[2];
    inst3 = numbers[0] * (-numbers[1]) + numbers[2];
    inst4 = numbers[0] - numbers[1] * numbers[2];
    inst5 = numbers[0] * numbers[1] - numbers[2];
    inst6 = numbers[0] - numbers[1] + numbers[2];

    if (inst1 < inst2) {
        o = inst1;
    }
    if (o > inst3) {
        o = inst3;
    }
    if (o > inst4) {
        o = inst4;
    }
    if (o > inst5) {
        o = inst5;
    }
    if (o > inst6) {
        o = inst6;
    }

    std::cout << o << std::endl;

}








// 2

#include <iostream>
#include <vector>

int main() {
    std::vector<int> numbers;
    std::vector<int> odd_numbers;

    int k = 1,R=0,l{};
    std::cin >> R;

    do {
        std::cin >> l;
        numbers.push_back(l);
        k++;
    } while (k <= R);

    for (int i = 0; i < numbers.size(); i++) {
        if (numbers[i] % 2 == 0)
            continue;
        else
            odd_numbers.push_back(numbers[i]);
    }


    std::cout << " " << std::endl;;
    int summer = 0;
    for (int i = 0; i < odd_numbers.size(); i++) {
        summer += odd_numbers[i];
    }
    std::cout<<"Avrg: " << summer / odd_numbers.size();
}






// 3

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <vector>
#include <stdio.h>

struct product
{
    int kod;
    char ime[31];
    char mjarka[6];
    float ed_cena;
    float kolic;
};

void readProd(product* pr)
{
    printf("Code: "); scanf("%d", &pr->kod); getchar();
    printf("Name: "); gets_s(pr->ime, 30);
    printf("Measurement: "); gets_s(pr->mjarka, 30);
    printf("Unit Price: "); scanf("%f", &pr->ed_cena);
    printf("Amount: "); scanf("%f", &pr->kolic);
    getchar();
}

int main()
{
    product prod[30];
    int n, i;

    printf("Number of products: "); scanf("%d", &n);
    for (i = 0; i < n; i++)
        readProd(&prod[i]);
    float sum = 0;
    for (i = 0; i < n; i++)
        sum += prod[i].kolic * prod[i].ed_cena;
    printf("Total sum: %8.3f\n", sum);
}






// 4

#include <iostream>
#include <string>
#include <vector>

int main()
{
    std::string input;
    std::string input2;

    std::getline(std::cin, input);
    std::getline(std::cin, input2);

    if (input.size() > 15 || input2.size() > 15)
    {
        puts("Max size is 15");
        return 0;
    }

    char commonChar = -1;

    for (int i = 0; i < input.size(); i++)
    {
        if (input2.find(input[i], 0) != std::string::npos)
        {
            commonChar = input[i];
            break;
        }
    }

    if (commonChar != -1)
    {
        for (int j = 0; j < input2.size(); j++)
        {
            for (int i = 0; i < input.size(); i++)
            {
                if (input[i] == commonChar && input2[j] == commonChar)
                    printf("%c", commonChar);
                else if (input[i] == commonChar)
                    printf("%c", input2[j]);
                else if (input2[j] == commonChar)
                    printf("%c", input[i]);
                else
                    printf(" ");
            }
            printf("\n", input2[j]);
        }
    }
    else
    {
        printf("%s \n", input.c_str());

        for (int j = 0; j < input2.size(); j++)
        {
            for (int i = 0; i < input.size(); i++)
            {
                printf(" ");
            }
            printf("%c\n", input2[j]);
        }
    }
}



// 5

#include <iostream>
#include <string>
#include <vector>

int main()
{
    std::string input;
    std::getline(std::cin, input);

    std::vector<std::string> words;

    auto last_pos = -1;
    auto last_pos2 = 0;

    while ((last_pos = input.find(' ', last_pos + 1)) != std::string::npos)
    {
        std::string word = input.substr(last_pos2, last_pos - last_pos2);
        last_pos2 = last_pos + 1;

        words.push_back(word);
    }

    if (last_pos2 < input.size()) // last word
    {
        std::string word = input.substr(last_pos2, last_pos - last_pos2);
        words.push_back(word);
    }

    int largestSize = -1;
    std::vector<std::string> largest;

    for (auto& word : words)
    {
        int size = word.size();
        if (size > largestSize)
        {
            largestSize = size;
            largest.clear();
            largest.push_back(word);
        }
        else if (size == largestSize)
        {
            largest.push_back(word);
        }
    }

    printf("Largest word%s: \n", largest.size() == 1 ? "" : "s");
    for (auto& word : largest)
    {
        printf("  %s\n", word.c_str());
    }
}