print("Write date in dd/mm/yyyy format")
d=int(input("Enter the date = "))
print("If month from 1 to 9 write without zero else write normally")
m=int(input("Enter the month = "))
y=int(input("Enter the year = "))
print("The date entered =",d,"/",m,"/",y)
if y%4==0:
if m==2:
if (d>0 and d<=29): print(end="")
else: print("The date is invalid")
if (m==1 or m==3 or m==5 or m==7 or m==9 or m==11):
if(d>0 or d<=30): print("The date is valid")
else: print("The date is invalid")
elif (m==4 or m==6 or m==8 or m==10 or m==12):
if(d>0 or d<=31):print("The date is valid")
else: print("The date is invalid")
else:print("The date is invalid")
else:
if m==(2):
if (d>0 and d<=28): print(end="The date is valid")
else: print("The date is invalid")
if (m==1 or m==3 or m==5 or m==7 or m==9 or m==11):
if(d>0 or d<=30): print("The date is valid")
else: print("The date is invalid")
elif (m==4 or m==6 or m==8 or m==10 or m==12):
if(d>0 or d<=31):print(end="The date is valid")
else: print("The date is invalid")
else:print("The date is invalid")