View Compilation Error

0_0_21678690_22700.cpp:73:13: error: stray '\343' in program
             while(top>0&&cross(list[stack[top-1]],list[stack[top]],list[i])<=0) top--;　
             ^
0_0_21678690_22700.cpp:73:13: error: stray '\200' in program
0_0_21678690_22700.cpp:73:13: error: stray '\200' in program