/*模板*/
#include<iostream>
#include<cstdio>
using namespace std;
namespace IN
{
	inline int read()
	{
		int r = 0, w = 1; char ch = getchar();
		while (ch < '0' || ch > '9') { if (ch == '-') w = -1; ch = getchar(); }
		while (ch >= '0' && ch <= '9') { r = (r << 3) + (r << 1) + (ch ^ 48); ch = getchar(); }
		return r * w;
	}
}
using namespace IN;
int n;
signed main()
{
	freopen("a.in", "r", stdin);
	freopen("a.out", "w", stdout);
	n = read();
	cout << n;
	fclose(stdin);
	fclose(stdout);
	return 0;
}

请问这个模板可以用来打CSP-J吗？

如果不能，那该怎么改呢？？？