int main() {
int i = 0;
while (i < 3) {
print(i);
i = i + 1;
}
int j = 0;
do {
print(j);
j = j + 1;
} while (j < 3);
for (int k = 0; k < 3; k = k + 1) {
print(k);
return 0;