#include <iostream>
#include <string>
#include <set>
#include <type_traits>
using namespace std;
 
bool lexical_compare(int a, int b) {
	return to_string(a) < to_string(b);
}
 
using LexicalCompare = std::integral_constant<decltype(&lexical_compare), &lexical_compare>;
 
int main() {
    set<int, LexicalCompare> s;
 
    s.insert(1);
    s.insert(10);
    s.insert(11);
    s.insert(100);
    s.insert(100);
    s.insert(100);
    s.insert(102);
    s.insert(103);
 
    for (int x : s)
        cout << x << ' ';
 
    return 0;
}

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