View Compilation Error

0_0_29889872_10511.cpp: In function 'int dfs(int)':
0_0_29889872_10511.cpp:22:5: error: 'col' was not declared in this scope
  if(col==0)
     ^
0_0_29889872_10511.cpp:26:32: error: too many arguments to function 'int dfs(int)'
    f[x][col]+=max(dfs(e[i].to,1),dfs(e[i].to,0));
                                ^
0_0_29889872_10511.cpp:19:5: note: declared here
 int dfs(int x)
     ^
0_0_29889872_10511.cpp:26:47: error: too many arguments to function 'int dfs(int)'
    f[x][col]+=max(dfs(e[i].to,1),dfs(e[i].to,0));
                                               ^
0_0_29889872_10511.cpp:19:5: note: declared here
 int dfs(int x)
     ^
0_0_29889872_10511.cpp:33:28: error: too many arguments to function 'int dfs(int)'
    f[x][col]+=dfs(e[i].to,0); 
                            ^
0_0_29889872_10511.cpp:19:5: note: declared here
 int dfs(int x)
     ^
0_0_29889872_10511.cpp:37:14: error: 'col' was not declared in this scope
  return f[x][col];
              ^