View Compilation Error

0_0_37716620_716.cpp: In function 'void bfs()':
0_0_37716620_716.cpp:73:20: error: 'tp' was not declared in this scope
         if(st[ver][tp]) continue; 
                    ^
0_0_37716620_716.cpp:74:17: error: 'tp' was not declared in this scope
         st[ver][tp] = true;
                 ^