a="malayalam\0"
i=0
digits=0
while(a[i]!='\0')
i=i+1
digits=i
j=digits-1
flag=1
while(i<j)
if(a[i]!=a[j])
flag=0
i=i+1
j=j-1
if(flag==1)
print "yes"
else
print "no"
end
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