Clear c++ solution
\tbool isValidSerialization(string preorder) {\n\t\tint degree = 1;\n\t\tstring temp;\n\t\tstringstream ss;\n\t\tss << preorder;\n\t\twhile (getline(ss, temp, '
\tbool isValidSerialization(string preorder) {\n\t\tint degree = 1;\n\t\tstring temp;\n\t\tstringstream ss;\n\t\tss << preorder;\n\t\twhile (getline(ss, temp, ',')) {\n\t\t\tdegree--;\n\t\t\tif (degree < 0)\n\t\t\t\treturn false;\n\t\t\tif (temp[0] != '#')\n\t\t\t\tdegree += 2;\n\t\t}\n\t\treturn degree == 0;\n\t}
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