#include <iostream>
#include <iterator>
#include <numeric>
#include <string>
#include <vector>
 
using namespace std;
 
int main() {
	const auto test = "1010eefabbccde1f1f"s;
	const vector<size_t> sizes { 4U, 4U, 6U, 4U };
	const auto result = accumulate(cbegin(sizes), cend(sizes), vector<int>(), [&, pos = 0U](auto& a, const auto& b) mutable {
	    a.push_back(stoi(test.substr(pos, b), nullptr, 16));
	    pos += b;
	    return a;
	});
 
    for(const auto& i : result) cout << i << endl;
}

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