View Compilation Error

0_0_11100303_18809.cpp: In function `mat multi(mat, mat)':
0_0_11100303_18809.cpp:22: error: integer constant is too large for "long" type
0_0_11100303_18809.cpp: In function `int main()':
0_0_11100303_18809.cpp:47: error: integer constant is too large for "long" type
0_0_11100303_18809.cpp:54: error: integer constant is too large for "long" type