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)
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