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  1. m=int(input())
  2. a=0
  3. b=0
  4. c=0
  5. for i in range(1,m+1):
  6. if i<=50:
  7. a +=1
  8. elif 50<i<=100:
  9. b +=1
  10. else:
  11. c +=1
  12. tien=a*1500+b*2000+c*2500
  13. print(tien)
Success #stdin #stdout 0.07s 14180KB
stdin
300
stdout
675000