View Compilation Error

0_0_27543363_7409.cpp: In function 'Mat matmul(Mat, Mat)':
0_0_27543363_7409.cpp:50:77: error: expected ')' before ';' token
                 res.ma[i][j] = (res.ma[i][j] + x.ma[i][k] * y.ma[k][j] % mod;
                                                                             ^