#include<iostream>
using namespace std;
int main()
{
cout << 12345678901245LL <<'\n'
// long long int literal digit separator
<< 12'345'678'901'245LL <<'\n'
// binary literal digit separator
<< 0b1000'11'1'0ull <<'\n'
// hexadecimal literal digit separator
<< 0X12A'2b4ull;
return 0;
}
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