compensacao.cpp

#include <bits/stdc++.h>

using namespace std;

const int maxn = 1010;

int d[maxn];

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);

	int m, n;
	cin >> m >> n;

	int tot = 0;
	for (int i = 0; i < m; i++) {

		int a, b, v;
		cin >> a >> v >> b;

		tot += v;
		d[a] -= v;
		d[b] += v;
	}

	int ans = 0;
	for (int i = 1; i <= n; i++) ans += abs(d[i]);

	ans /= 2;

	if (ans != tot) cout << "S" << "\n";
	else cout << "N" << "\n";

	cout << ans << "\n";
}