program st
real::a,b,res
read *,a,b
if(a>0.AND.b>0)then
res=a+b
print *,res
else if(a>0.AND.b<0)then
res=a+b*b
print *,res
else if(a<0.AND.b>0)then
res=a*a+b
print *,res
end if
end program
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