提交时间:2020-08-14 16:30:15

运行 ID: 5632

#include<bits/stdc++.h> using namespace std; int main(){ double a,b,c,ans; cin>>a>>b>>c; a=a*10.4; b=b*15.6; c=c*25.2; ans=a+b+c; printf("%.1lf",ans); return 0; }