#include<iostream>

#include<map>

#include<functional>

#include<string>

using namespace std;

int add(int a,int b)

{

    return a+b;

}

struct divide{

    int operator()(int denominator,int divisor)

    {

        return denominator/divisor;

    }

};

auto mode=[](int i,int j) { return i%j;};

int main()

{

    int (*pf)(int,int)=add;

    map<string,function<int(int,int)>> binops;

    binops.insert({"+",add});

    binops.insert({"+",pf});

    binops.insert({"-",minus<int>()});

    binops.insert({"*",[](int i,int j) {return i*j;}});

    binops.insert({"/",divide()});

    binops.insert({"%",mode});

    cout<<binops["+"](,)<<endl;

    cout<<binops["-"](,)<<endl;

    cout<<binops["*"](,)<<endl;

    cout<<binops["/"](,)<<endl;

    cout<<binops["%"](,)<<endl;

    return ;

}