foo.cc: In function 'int coco(int)':
foo.cc:14:9: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
   14 |  return s;
      |         ^
foo.cc: In function 'int main()':
foo.cc:20:21: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
   20 |  if(coco(m)==coco(n)&&coco(m)==m+n+1)
      |     ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~
foo.cc:20:21: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
foo.cc:20:21: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]

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