Record Case Detail

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terminate called after throwing an instance of 'std::logic_error'
  what():  basic_string::_M_construct null not valid

Your answer may be identical to the JOJ answer in the first several lines.

However, the main problem you meet now is Runtime Error. And the exit code of your program is -6, which should be 0.

Please double check your code to solve this problem and try again.

Initial state
____ ____ pa_n ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ 
____ ____ ____ ____ ____ fl_s ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ al_e 
____ ____ ____ ____ ____ ____ lr_w ____ ____ al_s ____ ____ ____ ____ ____ ____ ____ ____ 
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ 
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ al_n ____ ____ ____ 
____ ____ ____ ____ ____ rr_n ____ ____ ____ ____ ____ ____ ____ la_s ____ lr_w ____ ____ 
____ ____ ____ ____ ____ al_s ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ 
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ al_n ____ ____ ____ ____ ____ 
____ ____ ____ fl_w ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ la_e ____ ____ ____ 
____ rr_e ____ ____ le_n al_w ____ ____ ____ ____ ____ le_n ____ le_n ____ le_w ____ ____ 
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ 
____ rr_e

Initial state
____ ____ pa_n ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ 
____ ____ ____ ____ ____ fl_s ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ al_e 
____ ____ ____ ____ ____ ____ lr_w ____ ____ al_s ____ ____ ____ ____ ____ ____ ____ ____ 
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ 
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ al_n ____ ____ ____ 
____ ____ ____ ____ ____ rr_n ____ ____ ____ ____ ____ ____ ____ la_s ____ lr_w ____ ____ 
____ ____ ____ ____ ____ al_s ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ 
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ al_n ____ ____ ____ ____ ____ 
____ ____ ____ fl_w ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ la_e ____ ____ ____ 
____ rr_e ____ ____ le_n al_w ____ ____ ____ ____ ____ le_n ____ le_n ____ le_w ____ ____ 
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ 
____ rr_e

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JOJ Answer