foo.cc:1:9: error: #include expects "FILENAME" or <FILENAME>
    1 | #include
      |         ^
foo.cc: In function 'int main()':
foo.cc:6:1: error: 'scanf' was not declared in this scope
    6 | scanf("%d%d",&n,&Q);
      | ^~~~~
foo.cc:10:1: error: 'printf' was not declared in this scope
   10 | printf("%d\n",s[r]-s[l-1]);
      | ^~~~~~
foo.cc:1:1: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
  +++ |+#include <cstdio>
    1 | #include

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