/in/foo.cc:2:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:34:15: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
 {printf("%d",e);
               ^
/in/foo.cc:7:11: warning: unused variable 's' [-Wunused-variable]
 long long s=0,e=0;
           ^