View Compilation Error

0_0_35845769_10432.cpp: In function 'int main()':
0_0_35845769_10432.cpp:26:16: error: 'vis' was not declared in this scope
         memset(vis,0,sizeof(vis));
                ^
0_0_35845769_10432.cpp: At global scope:
0_0_35845769_10432.cpp:70:5: error: expected initializer before 'if'
     if(i<0||j<0||i>=n||j>=m)
     ^
0_0_35845769_10432.cpp:72:5: error: expected unqualified-id before 'else'
     else
     ^