ACM寒假集训2019.1.22

题目链接：https://vjudge.net/contest/279625#problem/C
代码：

#include <iostream>
using namespace std;
int main()
{
	int n,sum=1;
	cin >> n;
	if (n < 1 || n>100000)
		return 0;
	n++;
	char(*a)[2] = new char[n][2];
	n--;
	for (int i = 0; i < n; i++)
		cin >> a[i][1] >> a[i][2];
	for (int i = 0; i < n-1;i++)
	{
		if (a[i][2] == a[i + 1][1])
			sum++;
	}
	cout << sum;
}