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              成績轉換

              Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
              Total Submission(s): 247272    Accepted Submission(s): 106379


              Problem Description
              輸入一個百分制的成績t,將其轉換成對應的等級,具體轉換規則如下:
              90~100為A;
              80~89為B;
              70~79為C;
              60~69為D;
              0~59為E;
               

              Input
              輸入數據有多組,每組占一行,由一個整數組成。
               

              Output
              對于每組輸入數據,輸出一行。如果輸入數據不在0~100范圍內,請輸出一行:“Score is error!”。
               

              Sample Input
              56 67 100 123
               

              Sample Output
              E D A Score is error!
               

              Author
              lcy
               

              Source
               

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              JGShining
               

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