View Compilation Error

0_0_33786608_28151.cpp: In function 'void solve(int, int)':
0_0_33786608_28151.cpp:140:5: error: 'vis' was not declared in this scope
     vis[u] = ++ckc;
     ^
0_0_33786608_28151.cpp: In function 'int main()':
0_0_33786608_28151.cpp:181:16: error: 'iscut' was not declared in this scope
         memset(iscut,0,sizeof(iscut));
                ^
0_0_33786608_28151.cpp:220:33: error: 'bsz' was not declared in this scope
                     nts[le++] = bsz[v];
                                 ^