Problem	ballgame
User	popperoni
Submission Time	2025-02-12 14:56:34
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

ballgame.cpp: In member function ‘void node::up(int, int)’:
ballgame.cpp:93:7: error: redeclaration of ‘int M’
93 | int M = (S+E)/2;
| ^
ballgame.cpp:88:6: note: ‘int M’ previously declared here
88 | ll M=(S+E)/2;
| ^