#include <iostream>
#include <string>
#include <sstream>
using namespace std;
int main() {
for (int i = 0 ; i != 10 ; i++) {
ostringstream oss;
oss << i;
string si = oss.str();
cout << si << endl;
}
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8c3RyaW5nPgojaW5jbHVkZSA8c3N0cmVhbT4KCnVzaW5nIG5hbWVzcGFjZSBzdGQ7CgppbnQgbWFpbigpIHsKICAgIGZvciAoaW50IGkgPSAwIDsgaSAhPSAxMCA7IGkrKykgewogICAgICAgIG9zdHJpbmdzdHJlYW0gb3NzOwogICAgICAgIG9zcyA8PCBpOwogICAgICAgIHN0cmluZyBzaSA9IG9zcy5zdHIoKTsKICAgICAgICBjb3V0IDw8IHNpIDw8IGVuZGw7CiAgICB9CiAgICByZXR1cm4gMDsKfQ==