View Compilation Error

0_0_29049089_8952.cpp: In function 'int main()':
0_0_29049089_8952.cpp:88:31: error: expected primary-expression before '%' token
     while (scanf ("%d%d", &n, %2
                               ^
0_0_29049089_8952.cpp:88:32: error: expected ')' at end of input
     while (scanf ("%d%d", &n, %2
                                ^
0_0_29049089_8952.cpp:88:32: error: expected statement at end of input
0_0_29049089_8952.cpp:88:32: error: expected '}' at end of input