View Compilation Error

0_0_22813293_18921.cpp:48:9: error: stray '\243' in program
         int l=0,r=len-1,ans=-1；
         ^
0_0_22813293_18921.cpp:48:9: error: stray '\273' in program
0_0_22813293_18921.cpp: In function 'int main()':
0_0_22813293_18921.cpp:49:9: error: expected ',' or ';' before 'while'
         while(l<=r)
         ^