#include <iostream>
#include <cstdlib>
using namespace std;
 
template<typename T> constexpr inline T add(T val) { return val; }
 
template<typename T, typename ...Agrs>
constexpr inline T add(T val, Agrs ...args) { return val + add(args...); }
 
 
int main() {
 
    cout << add(1, 2, 3) << endl;
 
    volatile int a = 1, b = 2, c = 3;
 
    cout << add(a, b, c) << endl;
 
    for(volatile int i = 0; i < 10; ++i) 
    	cout << add(rand(), i) << endl;
 
    return 0;
}

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