Ostatok

#include <iostream>
#include <vector>

int main() {
    std::vector<int> r;

    for (int I = 0; I < 10; I++) {
        int n;
        std::cin >> n;

        int x = n % 42;

        bool najdeno = false;

        for (unsigned int i = 0; i < r.size(); i++) {
            if (r[i] == x) {
                najdeno = true;
                break;
            }
        }

        if (najdeno == false) {
            r.push_back(x);
        }
    }

    std::cout << r.size() << std::endl;
}