题解 | #截取字符串#

#include <iostream>
#include <string>
using namespace std;

int main() {
    string str;
    int k;
    cin >> str >> k;
    cout << str.substr(0, k) << endl;
    return 0;
}

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine();
        int k = sc.nextInt();
        System.out.println(str.substring(0, k));
    }
}

s = input()
k = int(input())
print(s[:k])