#include <iostream>
using namespace std;
int main(){
    int n, a, b;
    cin>>n>>a>>b;
    int answer;
    if (n==1){
        answer=a;
    }if (n==2){
        answer=a/2;
    }
    else if (n%3==0){
        answer=b*3/n+a/n;
    }else if (n%3==1){
        if (a>=b/(n/3)){
            answer=b/(n/3)+(a-b/(n/3))/n;
        }else{
            answer=a;
        }
    }else if (n%3==2){
        if (a>=2*b/(n/3)){
            answer=b/(n/3)+(a-2*b/(n/3))/n;
        }else{
            answer=a/2;
        }
    }
    cout<<answer<<endl;
}