View Compilation Error

0_0_39650532_10632.cpp:17:7: error: conflicting declaration 'long long int s'
   17 | int n,s;
      |       ^
0_0_39650532_10632.cpp:15:6: note: previous declaration as 'char s [2100000]'
   15 | char s[N];
      |      ^
0_0_39650532_10632.cpp: In function 'void fun(long long int, long long int)':
0_0_39650532_10632.cpp:21:10: error: incompatible types in assignment of 'long long int' to 'char [2100000]'
   21 |         s=f[l];
      |         ~^~~~~