Code@LTH - (Binary)Search over the answer
            Problem M
Freight Train — Problem Statistics        
Back to problem description| Submissions | 1857 | 
| Accepted submissions | 546 | 
| Submission ratio | 29.40% | 
| Authors | 475 | 
| Full solves [?] | 399 | 
| Full solve Ratio | 84.00% |