#include <iostream>
#include <vector>
using namespace std;
int main() {
const int NUM_SQUARES = 9;
vector<char> board(NUM_SQUARES, 'X');
cout << board[0] << endl; // prints X
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8dmVjdG9yPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7Cgljb25zdCBpbnQgTlVNX1NRVUFSRVMgPSA5OwogICAgdmVjdG9yPGNoYXI+IGJvYXJkKE5VTV9TUVVBUkVTLCAnWCcpOwogICAgY291dCA8PCBib2FyZFswXSA8PCBlbmRsOyAvLyBwcmludHMgWAoJcmV0dXJuIDA7Cn0=