View Compilation Error

0_0_38138108_7041.cpp: In function 'int dfs(int, int)':
0_0_38138108_7041.cpp:2123:9: error: return-statement with no value, in function returning 'int' [-fpermissive]
         return;
         ^
0_0_38138108_7041.cpp:2130:3: error: return-statement with no value, in function returning 'int' [-fpermissive]
   return;
   ^