06. Squares

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

using namespace std;

int main() {
    string line;
    getline(cin, line);

    istringstream ss(line);

    list<int> numbers;

    int number;

    while (ss >> number) {
        numbers.push_back(number);
    }

    numbers.sort();

    for (auto i = numbers.rbegin(); i != numbers.rend(); i++) {
        if ((double)sqrt(*i) == (int)sqrt(*i)) {
            cout << *i << ' ';
        }
    }

    cout << endl;
    return 0;
}