1609: 蓝桥杯算法训练VIP-黑色星期五

def isyun(n):
    if n%100==0:
        if n%400==0:
            return 1 
    else:
        if n%4==0:
            return 1 
n=int(input())
dicy={1:31,2:29,3:31,4:30,5:31,6:30,7:31,8:31,9:30,10:31,11:30,12:31}
dicp={1:31,2:28,3:31,4:30,5:31,6:30,7:31,8:31,9:30,10:31,11:30,12:31}
days=(n-1)*365
for i in range(n):
    if isyun(i):
        days+=1 
if isyun(n)==1:
    s=0 
    ls=[]
    for i in range(1,13):
        lt=[]
        for j in range(1,i):
            lt.append(dicy[j])
        ls.append(sum(lt)+13)
    for i in ls:
        if (i+days+6)%7==5:
            s+=1 
    print(s)
else:
    s=0 
    ls=[]
    for i in range(1,13):
        lt=[]
        for j in range(1,i):
            lt.append(dicp[j])
        ls.append(sum(lt)+13)
    for i in ls:
        if (i+days+6)%7==5:
            s+=1 
    print(s)