题解 | #截取字符串#

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            String str = sc.next();
            int n = sc.nextInt();
            deal(str,n);
        }
    }

    private static void deal(String str, int n) {
        String newStr = str.substring(0,n);
        System.out.println(newStr);
    }

}