L’entrée consiste de diverses paires d’entiers a et b.
Suposez que b ≥ 0.
Sortie
Pour chaque paire a,b, il faut écrire ab.
Suposez, com d’habitude, que 00 = 1.
About statements
The official statement of a problem is always the one
in the PDF document. The HTML version of the statement
is also given to help you, but may contain some content
that is not well displayed. In case of doubt, always use the PDF.