View Compilation Error

0_0_37759528_23767.cpp: In function 'int main()':
0_0_37759528_23767.cpp:62:8: error: missing template arguments before 'hb'
   Hash hb(b) , hc(c);
        ^
0_0_37759528_23767.cpp:79:25: error: 'hb' was not declared in this scope
    if(check(1,x-1,1,x-1,hb,hc))
                         ^
0_0_37759528_23767.cpp:79:28: error: 'hc' was not declared in this scope
    if(check(1,x-1,1,x-1,hb,hc))
                            ^
0_0_37759528_23767.cpp:88:35: error: 'hb' was not declared in this scope
      if(check(x-i+1,y-i-1,x+1,y-1,hb,hc) )
                                   ^
0_0_37759528_23767.cpp:88:38: error: 'hc' was not declared in this scope
      if(check(x-i+1,y-i-1,x+1,y-1,hb,hc) )
                                      ^
0_0_37759528_23767.cpp:97:30: error: 'hb' was not declared in this scope
     if(check(x-n+1,n,x+1,2*n,hb,hc))
                              ^
0_0_37759528_23767.cpp:97:33: error: 'hc' was not declared in this scope
     if(check(x-n+1,n,x+1,2*n,hb,hc))
                                 ^