#include<iostream>
using namespace std;

template<class T>
void swap2(T & a, T & b){
    T c = a;
    a = b;
    b = c;
}

int main(){

    int a=5, b=8;
    char y = 'a', x = 'h';

    swap2(a,b);
    swap2(x,y);

    cout<<a<<" "<<b<<endl;

    cout<<y<<" "<<x<<endl;

    return 0;
}