View Compilation Error

0_0_36204029_20667.cpp:6:8: error: expected ']' before ';' token
 }V[5005;
        ^
0_0_36204029_20667.cpp: In function 'void kruskal()':
0_0_36204029_20667.cpp:15:7: error: 'V' was not declared in this scope
  sort(V,V+m,com);
       ^
0_0_36204029_20667.cpp: In function 'int main()':
0_0_36204029_20667.cpp:35:4: error: 'V' was not declared in this scope
    V[i].u=a;
    ^