In file included from /usr/include/c++/12/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/12/bits/stdc++.h:65,
                 from /in/foo.cc:1:
In function 'void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = int*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<greater<int> >]',
    inlined from 'void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = int*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<greater<int> >]' at /usr/include/c++/12/bits/stl_algo.h:1940:31,
    inlined from 'void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = int*; _Compare = greater<int>]' at /usr/include/c++/12/bits/stl_algo.h:4853:18,
    inlined from 'int main()' at /in/foo.cc:12:6:
/usr/include/c++/12/bits/stl_algo.h:1849:32: warning: array subscript 17 is outside array bounds of 'int [15]' [-Warray-bounds]
 1849 |           std::__insertion_sort(__first, __first + int(_S_threshold), __comp);
      |           ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:3:11: note: at offset 68 into object 'b' of size 60
    3 | int a[15],b[15],c[15],nb,nc;
      |           ^