View Compilation Error

0_0_35888004_11933.cpp: In function 'void Bfs()':
0_0_35888004_11933.cpp:36:44: error: expected primary-expression before '%' token
                 if(stair[yy][xx+1]+flag[f])%2==0)
                                            ^
0_0_35888004_11933.cpp:57:13: error: expected ')' before '{' token
             {
             ^
0_0_35888004_11933.cpp:70:9: error: expected primary-expression before '}' token
         }
         ^