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package yukicoder;

import java.util.Scanner;

/**
 *
 * @author hjhto
 */
public class YukicoderNo56 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner sc = new Scanner(System.in);
        
        int a = sc.nextInt();
        int b = sc.nextInt();
        
        System.out.println((a*(100+b))/100);
    }
    
}