题解 | 回文日期

import sys
start=input()
end=input()
result=0
for i in range(int(start[:4]),int(end[:4])+1):
    gh=None
    if (i%4==0 and i%100!=0) or i%400==0:
        gh=1
    else:
        gh=0
    middle=str(i)[::-1]
    if int(middle[:2])==2:
        if 0<=int(middle[2:])<=28+gh:
            result+=1
    elif int(middle[:2]) in [1,3,5,7,8,10,12]:
        if 0<=int(middle[2:])<=31:
            result+=1
    elif int(middle[:2]) in [4,6,9,11]:
        if 0<=int(middle[2:])<=30:
            result+=1
print(result)
for line in sys.stdin:
    a = line.split()
    print(int(a[0]) + int(a[1]))