View Compilation Error

0_0_27317832_5560.cpp:2:2: error: invalid preprocessing directive #definr
 #definr inf 0x3f3f3f3f;
  ^
0_0_27317832_5560.cpp: In function 'int prim()':
0_0_27317832_5560.cpp:27:13: error: 'inf' was not declared in this scope
  memset(dis,inf,sizeof(dis)); 
             ^
0_0_27317832_5560.cpp: In function 'int dfs(int, int)':
0_0_27317832_5560.cpp:60:15: error: 'inf' was not declared in this scope
     int len = inf;
               ^
0_0_27317832_5560.cpp: In function 'int main()':
0_0_27317832_5560.cpp:80:12: error: 'inf' was not declared in this scope
   memset(G,inf,sizeof(G));
            ^