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View Compilation Error

0_0_39192404_9170.cpp
0_0_39192404_9170.cpp(10) : error C2668: “sqrt”: 对重载函数的调用不明确
        VC2013\INCLUDE\math.h(1251): 可能是“long double sqrt(long double) throw()”
        VC2013\INCLUDE\math.h(1135): 或       “float sqrt(float) throw()”
        VC2013\INCLUDE\math.h(521): 或       “double sqrt(double)”
        尝试匹配参数列表“(int)”时
0_0_39192404_9170.cpp(43) : error C2057: 应输入常量表达式
0_0_39192404_9170.cpp(43) : error C2466: 不能分配常量大小为 0 的数组
0_0_39192404_9170.cpp(43) : error C2133: “arr”: 未知的大小
0_0_39192404_9170.cpp(44) : error C2057: 应输入常量表达式
0_0_39192404_9170.cpp(44) : error C2466: 不能分配常量大小为 0 的数组
0_0_39192404_9170.cpp(44) : error C2133: “visited”: 未知的大小


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