#include <iostream>
using namespace std;
int main() {
int b = 0;
for ( int i = 0; i < 10; ++i ) {
b = b++;
cout << b << endl;
}
b = 0;
for ( int i = 0; i < 10; ++i ) {
b = ++b;
cout << b << endl;
}
return 0;
}
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