main(){ char ch ; scanf("%c",&ch); ch=(ch>='a'&&ch
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main(){charch;scanf("%c",&ch);ch=(ch>=''a''&&chmain(){charch;scanf("%c",&ch);ch=(ch>=''a''&&chmain(){cha
main(){ char ch ; scanf("%c",&ch); ch=(ch>='a'&&ch
main(){ char ch ; scanf("%c",&ch); ch=(ch>='a'&&ch
main(){ char ch ; scanf("%c",&ch); ch=(ch>='a'&&ch
ch=(ch>='a'&&ch