/in/foo.cc:6:23: error: stray '\357' in program
 const int MOD = 100003；
                       ^
/in/foo.cc:6:24: error: stray '\274' in program
 const int MOD = 100003；
                        ^
/in/foo.cc:6:25: error: stray '\233' in program
 const int MOD = 100003；
                         ^
/in/foo.cc:7:1: error: expected ',' or ';' before 'LL'
 LL b[LEN];
 ^~
/in/foo.cc: In function 'LL solve(int, int, int, LL)':
/in/foo.cc:14:6: error: 'b' was not declared in this scope
   if(b[i] - b[left - 1] <= ln && b[right] - b[i] <= rn ) {
      ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:27:18: error: 'b' was not declared in this scope
    scanf("%lld",&b[i]);
                  ^
/in/foo.cc:22:9: warning: unused variable 'j' [-Wunused-variable]
  int i, j, n, k, s, t;
         ^