User login [Moscow Workshops Juniors-2019. Day 2 Division C.]
 
 
Moscow Workshops Juniors
For C/C++ users:
  • use long long for signed 64-bit integers; use %lld as format string for reading signed 64-bit integers;
  • use unsigned long long for unsigned 64-bit integers; use %llu as format string for reading unsigned 64-bit integers;