View Compilation Error

0_0_33462555_7176.cpp:19:1: error: 'nt' does not name a type
 nt dis[35];  
 ^
0_0_33462555_7176.cpp: In function 'int spfa(int, int)':
0_0_33462555_7176.cpp:23:7: error: 'dis' was not declared in this scope
  fill(dis,dis+n+1,INF);
       ^