View Compilation Error

0_0_34166957_28107.cpp: In function 'mat mul(mat, mat)':
0_0_34166957_28107.cpp:34:52: error: too many arguments to function 'int add(int, int)'
   z.a[i][j]=add(z.a[i][j],1ll*x.a[i][k],y.a[k][j]%p);
                                                    ^
0_0_34166957_28107.cpp:28:5: note: declared here
 int add(int x,int y){
     ^