#41208: c++答案
yp11351173@yphs.tp.edu.tw
(801-34)
#include<iostream>
using namespace std;
int main(){
int a=0;
cin>>a;
cout<<a*0.3;
}
#include<iostream>
using namespace std;
int main(){
int a=0;
cin>>a;
cout<<a*0.3;
}