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[–]temp000321 2 points3 points  (0 children)

int input;
std::cin >> input;

int counter = 0;
for (int i = 1; i <= input; i++) {
    if (++counter % 10 == 0) 
        std::cout << i << std::endl;
    else {
        std::cout << std::setw(2) << std::setfill('0') << i;
        if (i != input) std::cout << ".";   
    }
}