统计单词数NOIP2011普及组第2题

#include
#include
#include
#include
using namespace std;
int main()
{
	string key, word, str;
	int first, count = 0, flag = 1, fpos, epos;
	getline(cin,key);
	getline(cin,str);
	str += ' ';
	int l1 = key.size();
	int l2 = str.size();
	for (int i = 0;i < l2;i++)
	{
		if (str[i] != ' ')
		{
			flag = 1;
			fpos = i;
			for (int j = i + 1;j < l2;j++)
			{
				if (str[j] == ' ')
				{
					epos = j;
					break;
				}
			}
			word = str.substr(fpos, epos - fpos);
			if (word.size() == l1)
			{
				for (int j = 0;j < l1;j++)
				{
					if (toupper(word[j]) != toupper(key[j]))
					{
						flag = 0;
						break;
					}
				}
			}
			else
			{
				flag = 0;
			}
			if (flag)
			{
				count++;
				if (count == 1)
				{
					first = fpos;
				}
			}
			i = epos;
		}
	}
	if (count!=0)
	{
		cout << count << " " << first << endl;
	}
	else cout << -1;
	return 0;
}