# http://c...content-available-to-author-only...e.com/a/52307/34718
import re
print(re.findall(r"(?<=%s)\d+"%input(),"H1He4Li7Be9B11C12N14O16F19Ne20Na23Mg24Al27Si28P31S32Cl35Ar40K30Ca40Sc45Ti48V51Cr52Mn55Fe56Co58Ni58Cu64Zn65Ga70Ge73As75Se79Br80Kr84Rb85Sr88Y89Zr91Nb93Mo96Tc98Ru101Rh103Pd106Ag108Cd112In115Sn119Sb122Te128I127Xe131Cs133Ba137La139Ce140Pr141Nd144Pm145Sm150Eu152Gd157Tb159Dy163Ho165Er167Tm169Yb173Lu175Hf178Ta181W184Re186Os190Ir192Pt195Au197Hg201Tl204Pb207Bi209Po209At210Rn222Fr223Ra226Ac227Th232Pa231U238Np237Pu244Am243Cm247Bk247Cf251Es252Fm257")[0])
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