/in/foo.cc: In function 'int main()':
/in/foo.cc:10:26: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'll* {aka long long int*}' [-Wformat=]
  scanf("%I64d%I64d",&s,&x);
                          ^
/in/foo.cc:10:26: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'll* {aka long long int*}' [-Wformat=]
/in/foo.cc:12:8: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
  ll t=s-x>>1;
       ~^~
/in/foo.cc:35:23: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll {aka long long int}' [-Wformat=]
  printf("%I64d\n", cnt);
                       ^