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+Input : 153
+Output : Yes
+153 is an Armstrong number.
+1*1*1 + 5*5*5 + 3*3*3 = 153
+
+Input : 120
+Output : No
+120 is not a Armstrong number.
+1*1*1 + 2*2*2 + 0*0*0 = 9
+
+Input : 1253
+Output : No
+1253 is not a Armstrong Number
+1*1*1*1 + 2*2*2*2 + 5*5*5*5 + 3*3*3*3 = 723
+
+Input : 1634
+Output : Yes
+1*1*1*1 + 6*6*6*6 + 3*3*3*3 + 4*4*4*4 = 1634