View Compilation Error

0_0_17450185_3147.cpp: In function 'void update(int)':
0_0_17450185_3147.cpp:44:25: error: 'flag' was not declared in this scope
                         flag=time[tmp];  
                         ^
0_0_17450185_3147.cpp:52:21: error: 'flag' was not declared in this scope
                     flag=time[tmp];  
                     ^