运行 ID: 34528

Main.cc: In function ‘void getz(int, int)’:
Main.cc:43:21: warning: unused variable ‘w’ [-Wunused-variable]
         int v=ed.fi,w=ed.se;
                     ^
Main.cc: In function ‘void getz2(int, int, int)’:
Main.cc:52:21: warning: unused variable ‘w’ [-Wunused-variable]
         int v=ed.fi,w=ed.se;
                     ^
Main.cc: In function ‘void divide(int)’:
Main.cc:122:21: warning: unused variable ‘w’ [-Wunused-variable]
         int v=ed.fi,w=ed.se;
                     ^
Main.cc: In function ‘int main()’:
Main.cc:147:6: error: ‘dfs’ was not declared in this scope
     }dfs(1);
      ^~~
Main.cc:147:6: note: suggested alternative: ‘dfn’
     }dfs(1);
      ^~~
      dfn