View Compilation Error

0_0_25727105_25111.cpp: In function 'bool dfs1(ll, ll, std::string)':
0_0_25727105_25111.cpp:27:3: error: return-statement with no value, in function returning 'bool' [-fpermissive]
   return ;
   ^
0_0_25727105_25111.cpp:31:3: error: return-statement with no value, in function returning 'bool' [-fpermissive]
   return;  
   ^
0_0_25727105_25111.cpp:34:2: error: expected ',' or ';' before 'for'
  for(ll i=index+1;i<index;i++){
  ^
0_0_25727105_25111.cpp:34:19: error: 'i' was not declared in this scope
  for(ll i=index+1;i<index;i++){
                   ^
0_0_25727105_25111.cpp:42:3: error: return-statement with no value, in function returning 'bool' [-fpermissive]
   return ;
   ^
0_0_25727105_25111.cpp:48:21: error: 'dfs' was not declared in this scope
    dfs(index+1,cnt+1)
                     ^
0_0_25727105_25111.cpp: In function 'int main()':
0_0_25727105_25111.cpp:86:16: error: 'dfs2' was not declared in this scope
    dfs2(0,0,ans);
                ^