View Compilation Error

0_0_15973914_17610.cpp: In function 'int bfs1()':
0_0_15973914_17610.cpp:88:1: error: expected '}' before 'else'
 else return step[s];
 ^
0_0_15973914_17610.cpp: At global scope:
0_0_15973914_17610.cpp:90:1: error: 'vis' does not name a type
 vis.clear();
 ^
0_0_15973914_17610.cpp:91:1: error: 'vis' does not name a type
 vis[s]=true;
 ^
0_0_15973914_17610.cpp:94:1: error: 'que' does not name a type
 que.push(make_pair(s,0));
 ^
0_0_15973914_17610.cpp:95:1: error: expected unqualified-id before 'while'
 while(!que.empty()){
 ^