View Compilation Error

0_0_24268835_9848.cpp: In function 'int main()':
0_0_24268835_9848.cpp:43:33: error: 'visit' was not declared in this scope
                 memset(s,0x3f,s(visit));
                                 ^
0_0_24268835_9848.cpp:43:38: error: 's' cannot be used as a function
                 memset(s,0x3f,s(visit));
                                      ^