View Compilation Error

0_0_14809658_18631.cpp: In function 'int main()':
0_0_14809658_18631.cpp:46:23: error: cannot convert 'long long int*' to 'int*' for argument '1' to 'void mergesort(int*, int, int, int*)'
   mergesort(d, 0, n, t);
                       ^