2025930

#x, y = map(int, input().split())#a = 0, b = 0##if x == 1:#    a = 400#elif x == 2:#    a = 340#elif x == 3:#    a = 170#elif x == 4:#    a = 100#else:#    a = 70#if a + b > 500:#a,b=input().split()#a=float(a)#b=float(b)#c=((a-100) * 0.9)#d=((b-c)*100/c)#if d<=10:#    print('정상')#elif 10<d<=20:#    print('과체중')#elif d>20:#    print('비만')#a,b=input().split()#a=float(a)#b=float(b)#if  a<150:#    c=(a-100)#elif 150<=a<160:#    c=((a-150)/2 + 50)#elif a>=160:#    c=((a-100)*0.9)#d=(b-c)*100/c#if d<=10:#    print('정상')#elif 10<d<=20:#    print('과체중')#elif d>20:#    print('비만')#a,b,c=input().split()#a=int(a)#b=int(b)#c=int(c)#if  a>170 and b>170 and c>170:#    print('PASS')#elif a<=170:#    print('CRASH',a)#elif b<=170:#    print('CRASH',b)#elif c<=170:#    print('CRASH',c)#a,b,c=input().split()#a=int(a)#b=int(b)#c=int(c)#if (c>a and c>b) and (a+b)>c:#    print('yes')#elif (b>a and b>c) and (a+c)>b:#    print('yes')#elif (a>b and a>c) and (b+c)>a:#    print('yes')#elif a==b==c:#    print('yes')#else:#    print('no')a,b=input().split()a=int(a)b=int(b)if a % 400 ==0 and (a % 4==0 and not a % 100==0) and b==2: print('29')elif b==4 or b==6 or b==9 or b==11:    print('30')elif b==2:    print('28')else:    print('31')