這道題不難，注意幾點，最多八條記錄的意思是超過八條，只取最後的八條，檔名稱最多16個字元只要這兩點做好了就可以了，但是比較尷尬的是，我做出一種解法，在別的平臺所有測試用例通過，在華為官方顯示格式錯誤，我無論怎麼修改都過不了，如果哪位大神看到，求指點:

1. 華為測試平臺結果顯示格式錯誤，本人找不到什麼錯誤。

#include<iostream>
#include<string>
#include<vector>
using namespace std;

struct file
{
	string fileName;
	string lineNo;
	int count;
};

void Reverse(string &inStr)
{
	//翻轉字串
	int i = 0;
	int j = inStr.size() - 1;
	char tmp = ' ';

	while (i < j)
	{
		tmp = inStr[i];
		inStr[i] = inStr[j];
		inStr[j] = tmp;
		i++;
		j--;
	}
}
void Calculate(string inStr, vector<file> &res)
{
	int i = inStr.size()-1,j = 0;
	string lineNo = "";
	string fileName = "";
	bool flag = false;

	for (; i >= 0; i--)
	{
		if (inStr[i] == ' ')
		{
			i--;
			break;
		}

		lineNo += inStr[i];
	}

	for (; i >= 0; i--,j++)
	{
		if (inStr[i] == '\\'||j >= 16)
		{
			break;
		}

		fileName += inStr[i];
	}

	//翻轉字串
	Reverse(fileName);
	Reverse(lineNo);

	for (i = 0; i < res.size(); i++)
	{
		if (res[i].fileName == fileName && res[i].lineNo == lineNo)
		{
			res[i].count++;
			flag = true;
			break;
		}
	}

	if (!flag)
	{
		file t;
		t.fileName = fileName;
		t.lineNo = lineNo;
		t.count = 1;
		res.push_back(t);
	}
}

int main()
{
	string inStr = "";
	vector<file> res;

	while (getline(cin, inStr))
	{
		Calculate(inStr, res);
	}
	int i = 0;

	if (res.size() > 8)
	{
		i = res.size() - 8;
	}

	for (; i < res.size(); i++)
	{
		cout << res[i].fileName << " " << res[i].lineNo << " " << res[i].count << endl;
	}

	return 0;
}
 

#include<iostream>
#include<string>
#include<vector>
using namespace std;
struct error
{
	string filefullname;
	string filename;
	string lineno;
	int count;
} ;
typedef error Error;
int main()
{
	vector<Error> result;
	Error temp;
	string ss;
	string filepath;
	int number = 0;
	bool flag=0;
	while (cin >> filepath >> temp.lineno)
	{
		number++;
		temp.count = 1;
		ss = filepath.substr(filepath.find_last_of("\\")+1, filepath.length());
		temp.filefullname = ss;
		if (ss.length() > 16)
		{
			temp.filename = ss.substr(ss.length()-16);
		}
		else
		{
			temp.filename = ss;
		}
		for (vector<Error>::iterator iter = result.begin(); iter != result.end(); iter++)
		{
			if ((*iter).filefullname == temp.filefullname && (*iter).lineno == temp.lineno)
			{
				(*iter).count++;
				flag = 1;
				break;
			}
		}
		if (!flag)
		{
			result.push_back(temp);
		}
		flag = 0;
		
	}
	if (result.size() <= 8)
	{
		for (int i = 0; i < result.size(); i++)
			cout << result[i].filename << " " << result[i].lineno << " " << result[i].count << endl;
	}
	else
	{
		for (int i = result.size() - 8; i < result.size(); i++)
			cout << result[i].filename << " " << result[i].lineno << " " << result[i].count << endl;
	}

	return 0;
}