import java.math.BigInteger;
import java.util.*;

public class Main {

  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    String[] S = scanner.nextLine().split(" ");
    scanner.close();
    BigInteger N = new BigInteger(S[0]);
    BigInteger A = new BigInteger(S[1]);
    BigInteger B = new BigInteger(S[2]);
    BigInteger step = A.add(B);
    BigInteger[] dr = N.divideAndRemainder(step);
    BigInteger remainder = dr[1].compareTo(A) >= 0 ? A : dr[1];
    BigInteger blueCount = A.multiply(dr[0]).add(remainder);
    System.out.println(blueCount.toString());
  }
}
/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