def isprime(n):     c=0     for i in range(1,n+1):         if(n%i==0):             c=c+1     if c==2:         return 1     else:         return 0 n=int(input()) c=0 x=1 while(c<=n):     x=x+1     for i in range(2,x+1):         if isprime(i):             c+=1 print(x)   

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