Update Bugged Explanation.txt

Author: MathProgrammer

Contests/AtCoder Beginner Contest 063/Explanations/Bugged Explanation.txt

@@ -1,8 +1,8 @@
-Case 1 - S is a multiple of 10
+Case 1 - S is not a multiple of 10
 
 Then, the answer is S
 
-Case 2 - S is not a multiple of 10
+Case 2 - S is a multiple of 10
 
 Then the answer is S - smallest non_multiple
 
@@ -35,4 +35,4 @@ int main()
         printf("%d\n", sum);
 
     return 0;
-}
+}