import java.math.BigInteger;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        BigInteger n = sc.nextBigInteger();
        BigInteger a = sc.nextBigInteger();
        BigInteger r = sc.nextBigInteger();

        BigInteger sum = a.add(r);
        BigInteger ans = n.divide(sum);
        BigInteger amari = n.remainder(sum);

        if (a.compareTo(amari)==-1) {
            System.out.println(a.multiply(ans).add(a));
        }else{
            System.out.println(a.multiply(ans).add(amari));
        }
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz