View Compilation Error

0_0_25768752_16750.cpp: In function 'void dfs(int, int)':
0_0_25768752_16750.cpp:15:12: error: 'i' was not declared in this scope
         cc[i]=1;
            ^
0_0_25768752_16750.cpp: In function 'int main()':
0_0_25768752_16750.cpp:38:24: error: 'fs' was not declared in this scope
                     if(fs[tt[i]]=i) cnt+=cc[tt[i]];
                        ^