#include <iostream>
#include <vector>
using namespace std;
int main() {
std::vector<int> wektor;
std::vector<int> wektory[10];
wektory[0].push_back(10);
wektory[5].push_back(20);
cout<<wektory[5][0]<<endl;
cout<<wektory[0][0]<<endl;
}
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