7. Hot Potato

#include <iostream>
#include <list>
#include <string>
#include <sstream>

std::list<std::string> readInput(std::string &turns) {
    std::list<std::string> names;
    std::string line;
    getline(std::cin, line);
    std::istringstream istr(line);
    std::string name;
    while (istr >> name) {
        names.push_back(name);
    }
    getline(std::cin, turns);
    return names;
}

std::list<std::string>::iterator setItToNextPos(std::list<std::string>& names,
                                                std::list<std::string>::iterator it) {
    std::list<std::string>::iterator newPos;
    if (std::next(it) == names.end()) {
        newPos = names.begin();
    } else {
        newPos = std::next(it);
    }
    return newPos;
}

std::string hotPotato(const int turns, std::list<std::string>& names) {
    int currTurns = turns;
    std::list<std::string>::iterator it = names.begin();
    currTurns--; //by pointing the first is one turn
    std::list<std::string>::iterator removeIt;
    while (names.size() != 1) {
        if (currTurns == 0) {
            removeIt = it;
            it = setItToNextPos(names, it);
            currTurns = turns;
            currTurns--;
            std::cout << "Removed " << *removeIt << std::endl;
            names.remove(*removeIt);
            continue;
        }
        it = setItToNextPos(names, it);
        currTurns--;
    }
    return *it;
}

int main()
{
    std::string turnsStr;
    std::list<std::string> names = readInput(turnsStr);
    int turns = stoi(turnsStr);
    std::cout << "Last is " << hotPotato(turns, names);
}