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View Compilation Error

0_0_18475697_8763\Main.java:27: 错误: 不兼容的类型: 从long转换到int可能会有损失
				sum = ((n*(n+1)/2)%10000)*((n*(n+1)/2)%10000);  //就是(n*(n+1)/2)的平方，对每个都取余，以免超出范围
				                         ^
1 个错误


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