for a in .5 .6 .7 .8 .9 1. 1.2 1.2 1.3 1.4 1.5 1.7 1.8 1.9 1.9 2.0 2.1 2.2 2.3 2.4 ; do
cat > input << EOF
$a
10000
0.
3.
EOF

./a.out < input >> dati_parabola

done