#include<bits/stdc++.h> using namespace std; int main(){ int a,b,c; cin>>a>>b; printf("%.2lf",sqrt(aa+bb)); return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ double a,b,c; cin>>a>>b; c=sqrt(pow(a,2)+pow(b,2)); cout<<fixed<<setprecision(2)<<c; return 0; }

#include<bits/stdc++.h> using namespace std; int main() { int a,b; double c; cin>>a>>b; c=sqrt(aa +bb); //cout<<fixed<<setprecision(2)<<c; printf("%.2f",c); return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ double a,b,c; cin>>a>>b; c=sqrt(pow(a,2)+pow(b,2)); printf("%.2lf",c); return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ double a,b,c; cin>>a>>b; c=sqrt(pow(a,2)+pow(b,2)); printf("%.2lf",c); return 0; }