#include <iostream>
#include <vector>
using namespace std;
 
void foo(std::vector<uint8_t> vec, int numSubVectors){
    size_t size = vec.size() / numSubVectors;
    auto iter = vec.begin();
    for (int i = 0; i < numSubVectors; ++i) {
        auto sub_vec = std::vector<uint8_t>(iter, iter + size);
        // do something with sub_vec
        // ...
        cout << sub_vec.size() << endl;
 
        iter += size;
    }
}
 
int main() {
	foo({2}, 1);
	foo({}, 1);
	foo({2}, 2);
 
	return 0;
}

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