#include<bits/stdc++.h> fapsw oe raidfoa

using namespace std;asd foew r idsao fdsf idsa fdsaodsak fds 

int main(){ads ff oewq oiwaofds

    double a;a faew iewo spfdsa fadpf dasp fp woie jafdjdsa f

    cin>>a;wq eorqewriuryewuahohfdsf32493 askffixzuhc

    cout<<fixed<<setprecision(1)<<pow(a,2); e32a9dfucx a092

}2 9raufdaha

// JalenLam_progamer