#include <iostream>
#include <iomanip>

void print_io_states(std::ios& io) {
    std::cout << '\t';
    std::cout << " fail()==" << io.fail();
    std::cout << "  bad()==" << io.bad();
    std::cout << "  eof()==" << io.eof();
    std::cout << '\n';
}

int sum_ints(std::istream& is) {
    int i, sum = 0;
    while (!is.eof()) {
        is >> i;
        if (is.bad()) {
            throw std::runtime_error{"bad istream"};
        } else if (is.fail()) {
            // fail(), but not bad()
            if (is.eof()) {
                // failbit && eofbit: this is normal (trailing whitespace)
                break;
            }
            // failbit && !eofbit: probably non-digit; just skip it
            is.clear();
            char c;
            is.get(c);
            std::cout << "  skipped: " << c << '\n';
        } else {
            // read i successfully;
            // we could have hit eof or not (depends on trailing whitespace)
            sum += i;
            std::cout << "current sum: " << std::setw(4) << sum;
            print_io_states(is);
        }
    }
    return sum;
}

int main() {
    int sum = sum_ints(std::cin);
    std::cout << "  final sum: " << std::setw(4) << sum;
    print_io_states(std::cin);
}