#include<bits/stdc++.h> using namespace std; int main(){ long long z,x,q; cin>>z>>x>>q; cout<<z0.2+x0.3+q*0.5<<endl; return 0; }

#include<bits/stdc++.h> using namespace std; int a,b,c,d; int main(){ cin>>a>>b>>c; d=(a0.2)+(0.3b)+(0.5*c); cout<<d; return 0; }

一道相当水的题

#include <bits/stdc++.h> using namespace std; int main(){ int A,B,C,d; cin>>A>>B>>C; d=0.2A+0.3B+0.5*C; cout<<d; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; int d=a0.2+b0.3+c*0.5; cout<<d; return 0; }

点个赞吧！

不会的直接抄

#include<iostream> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; cout<<a0.2+b0.3+c*0.5; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; cout<<a0.2+b0.3+c*0.5; return 0; }

#include <iostream> using namespace std; int main(){ int A,B,C; cin>>A>>B>>C; cout<<A0.2+B0.3+C*0.5; return 0; }