1 WHAT IS BITCOIN

Oldmoon�师自建的在线编程评测题库。 �系方�：oldmoon007@outlook.com

��Python模�

num = 3.1415926
print('Hello, {:.2f}!'.format(num))

��C++模�

#include <bits/stdc++.h> //万能头文件
using namespace std;
int main() {
	double num;
	cin>>num; //cin处�输入
	printf("%.2f", num / 3.0); //printf处�输出，如�留2��数。
	return 0;
}

��Java模�

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int num = scanner.nextInt();
        System.out.println(String.format("%.2f", num/3.0));
    }
}