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#include<iostream>
using namespace std;
int main() {
int a, b, c, d, e, f;
for (a = 0; a < 2; a++) {
for (b = 0; b < 2; b++) {
for (c = 0; c < 2; c++) {
for (d = 0; d < 2; d++) {
for (e = 0; e < 2; e++) {
for (f = 0; f < 2; f++) {
cout << a << b << c << d << e << f << endl;
}
}
}
}
}
}
return 0;
}