View Compilation Error

0_0_36137499_25592.cpp: In function 'void spfa()':
0_0_36137499_25592.cpp:111:38: error: 'pre' was not declared in this scope
                 if(diss[v]>diss[u]+l)pre[v].clear();
                                      ^
0_0_36137499_25592.cpp:113:17: error: 'pre' was not declared in this scope
                 pre[v].push_back(mp(u,l));
                 ^