#include <string>
#include <sstream>
#include <iostream>
using namespace std;
int main() {
stringstream ss("data block");
string str;
ss >> str;
cout<<str<<endl;
return 0;
}
I2luY2x1ZGUgPHN0cmluZz4KI2luY2x1ZGUgPHNzdHJlYW0+CiNpbmNsdWRlIDxpb3N0cmVhbT4KdXNpbmcgbmFtZXNwYWNlIHN0ZDsKCmludCBtYWluKCkgewoJc3RyaW5nc3RyZWFtIHNzKCJkYXRhIGJsb2NrIik7CglzdHJpbmcgc3RyOwoJc3MgPj4gc3RyOwoJY291dDw8c3RyPDxlbmRsOwoJcmV0dXJuIDA7Cn0=