View Compilation Error

0_0_33912298_19097.cpp: In function 'int main()':
0_0_33912298_19097.cpp:82:9: error: 'num' was not declared in this scope
         num=0;
         ^
0_0_33912298_19097.cpp:100:21: error: 'cnt' was not declared in this scope
             if (n*m-cnt-1>=t) dfs(x1,y1,0);
                     ^