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