#include <iostream>
using namespace std;
int main() {
int i=0;
i = i+1;
cout << i << endl;
i += 1;
cout << i << endl;
i++;
cout << i << endl;
i = i-1;
cout << i << endl;
i -= 1;
cout << i << endl;
i --;
cout << i << endl;
return 0;
}
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