代码发了，太简单了

#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(){ int a,b,c; cin>>a>>b; printf("%.2f",sqrt(aa+bb)); return 0; }