num=int(input("请输入一个整数:"))
if num%2==0:
    print("even")
else:
    print("odd"

print("我在中国学Python\n")

# 练习一下循环的使用
for i in range(1, 21):
print(f"我爱编程中国 {i} 次")

print("1")

#!/usr/bin/python

print ("Hello, Python!")

#include <stdio.h>

// int main() 
// {
//     int a[5] = {1,2,3,4,5};
//     int* ptr = (int*)(&a+1);
//     printf("%d %d", *(a+1), *(ptr-1));
//     return 0;
// }

//杨氏矩阵，o(n)的空间复杂度，找数字
// int find_num(int arr[3][3], int r, int c, int k)
......................

section .data                           ;section declaration
msg     db      "Hello, 编程中国",0xA   ;our dear string
len     equ     $ - msg                 ;length of our dear string
section .text                           ;section declaration
                       ;we must export the entry point to the ELF linker or
   global _start       ;loader. They conventionally recognize _start as their
                       ;entry point. Use ld -e foo to override the default.
_start:
;write our string to stdout
       mov     eax,4   ;system call number (sys_write)
       mov     ebx,1   ;first argument: file handle (stdout)
       mov     ecx,msg ;second argument: pointer to message to write
......................

weekday=["Sunday","Monday","Tuesday","Wednesday","Thursday", "Friday","Saturday"]
m_day=[0,31,28,31,30,31,30,31,31,30,31,30,31]

n=int(input())
for i in range(n):
    year,month,day=map(int,input().split())
    days=0
    if  (year%400==0 or (year%4==0 and year%100!=0 )):   #如果闰年2月为29天
        m_day[2]=29
    if month<1 or month>12 or day <1 :
        print("Illegal")
    elif day>m_day[month]:
......................

weekday=["Sunday","Monday","Tuesday","Wednesday","Thursday", "Friday","Saturday"]
m_day=[0,31,28,31,30,31,30,31,31,30,31,30,31]

n=int(input())
for i in range(n):
    year,month,day=map(int,input().split())
    days=0
    if  (year%400==0 or (year%4==0 and year%100!=0 )):   #如果闰年2月为29天
        m_day[2]=29
    if month<1 or month>12 or day <1 :
        print("Illegal")
    elif day>m_day[month]:
......................

weekday=["Sunday","Monday","Tuesday","Wednesday","Thursday", "Friday","Saturday"]
def ymd(year,month,day):
    m_day=[0,31,28,31,30,31,30,31,31,30,31,30,31]
    days=0
    year=abs(year)
    for i in range(0,year):
        if i%400==0 or (i%4==0 and i%100!=0 ):
            days+=366
        else:
            days+=365
    if  (year%400==0 or (year%4==0 and year%100!=0 )):
        m_day[2]=29
......................

#include <stdio.h>

void Swap(char* buf1, char* buf2, int width)
{
    int i = 0;
    for (i = 0; i<width; i++)
    {
        char tmp = *buf1;
        *buf1 = *buf2;
        *buf2 = tmp;
        buf1++;
        buf2++;
......................