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  1. #include<stdio.h>
  2.  
  3. int main()
  4. {
  5. int a,b,c;
  6.  
  7. scanf("%d",&a);
  8. scanf("%d",&b);
  9. scanf("%d",&c);
  10.  
  11. if((a<=b)&&(b<=c))
  12. printf("YES");
  13. else
  14. printf("NO");
  15. return 0;
  16. }
  17.  
Success #stdin #stdout 0s 5280KB
stdin
1
5
5
stdout
YES