2025925

#n=input()

#n=int(n)

#c=n%10*10

#d=n//10

#e=(c+d)*2-100

#f=(c+d)*2

#if e>50:

# print(e)

# print('OH MY GOD')

#elif f>100:

# print(e)

# print('GOOD')

#else:

# print(f)

# print('GOOD')

#n=input()

#n=int(n)

#a=n>0

#b=n<0

#c= n==0

#if a:

# print('양수')

#elif b:

# print('음수')

#elif c:

# print('0')

n=input()

n=int(n)

a=n%10

b=n%10

c=n%10

d=n//10

if a==1:

print(n,'st', sep='')

elif b==2:

print(n,'nd', sep='')

elif c==3:

print(n,'rd', sep='')

elif d==1:

print(n,'th', sep='')

else :

print(n,'th', sep='')