View Compilation Error

0_0_36543802_1154.cpp: In function 'void dfs2(int, int)':
0_0_36543802_1154.cpp:51:3: error: expected primary-expression before 'int'
   int mx=max(f2[u][0],tmp2)-2*len[i];
   ^
0_0_36543802_1154.cpp:51:3: error: expected ']' before 'int'
0_0_36543802_1154.cpp:51:3: error: expected ')' before 'int'
0_0_36543802_1154.cpp:52:21: error: 'tmp2' was not declared in this scope
   int tmp3=f2[u][0]+tmp2-2*len[i]-a[u];
                     ^
0_0_36543802_1154.cpp:53:3: error: 'mx' was not declared in this scope
   mx=max(mx,tmp3);
   ^