View Compilation Error

0_0_33686676_10309.cpp: In function 'void dfs2(ll, ll)':
0_0_33686676_10309.cpp:87:19: error: 'd' was not declared in this scope
    mx1 = dp1[v] + d;
                   ^
0_0_33686676_10309.cpp:92:19: error: 'd' was not declared in this scope
    mx2 = dp1[v] + d;
                   ^
0_0_33686676_10309.cpp: In function 'int main()':
0_0_33686676_10309.cpp:120:32: error: 'dp3' was not declared in this scope
   printf ("%d\n", max (dp1[i], dp3[i]));
                                ^