#include <iostream>
#include <vector>
#include <future>

using namespace std;

typedef vector<double>::iterator it;

class Min {
    public:
        double operator()(it begin, it end){
            double min = 0;
            min = *begin;
            for(; begin != end; begin++) {
                    if(min > *begin) {
                        min = *begin;
                    }
            }
            return min;
        }
};

int main() {
        vector<double> vec;
        it iter;
        double minimum = 0;
        double n = 0;
        cout<<"Unesi: "<<endl;
        while(cin>>n) {
                vec.push_back(n);
        }
        Min min;
        for (iter = vec.begin(); iter != vec.end(); iter++) {
                auto a = async(min, vec.begin(), vec.end());
                minimum = a.get();
        }

        cout<<minimum<<endl;
}