View Compilation Error

0_0_22386307_15253.cpp: In function 'void dfs1(graph, int)':
0_0_22386307_15253.cpp:35:18: error: 'bfs1' was not declared in this scope
     bfs1(j,step+1);
                  ^
0_0_22386307_15253.cpp: In function 'void dfs2(graph, int)':
0_0_22386307_15253.cpp:58:17: error: 'bfs1' was not declared in this scope
    bfs1(j,step+1);
                 ^
0_0_22386307_15253.cpp: In function 'void solve()':
0_0_22386307_15253.cpp:80:10: error: 'bfs1' was not declared in this scope
  bfs1(s,0);
          ^
0_0_22386307_15253.cpp:81:10: error: 'bfs2' was not declared in this scope
  bfs2(t,0);
          ^