#include <iostream>
 
// for when the template parameter pack is empty...
int doCountZeros() {
    return 0;
}
 
template <typename Arg, typename... Args>
int doCountZeros(Arg firstArg, Args... otherArgs) {
    return int(firstArg == 0) + doCountZeros(otherArgs...);
}
 
template <typename... Args>
int countZeros(Args... args) {
    return doCountZeros(args...);
}
 
int main() {
	int varA = 1, varB = 0, varC = 3, varD = 0;
	std::cout << countZeros(varA, varB, varC, varD); 
	return 0;
}

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