Start 2026-10-27 12:24:05

【2027省选】20261027模拟赛更正

End 2026-10-31 00:00:00
Contest is over.
Now 2026-11-15 00:19:26

A. 【BJ】T1

描述

输入

输出

样例

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输出

                            

                        


                        
                                            

                

                                            

            
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                        Time Limit
                        
                            2 seconds                        
                    

                    

                        Memory Limit
                        512 MB
                    

                    
                

            


            
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