#include <iostream>
#include <ctime>
#include <set>
int main(){
srand(time(NULL));
std::set<int> liczby;
while(liczby.size() < 6){
liczby.insert(rand()%49+1);
}
for(std::set<int>::const_iterator it=liczby.begin();it!=liczby.end();++it){
std::cout << *it << std::endl;
}
}
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