#include <bits/stdc++.h>

using namespace std;

#define FOR(i, a, b) for(int i = (a); i < (b); i++)
#define RFOR(i, a, b) for(int i = (a) - 1; i >= (b); i--)
#define SZ(a) int(a.size())
#define ALL(a) a.begin(), a.end()
#define PB push_back
#define MP make_pair
#define F first
#define S second

typedef long long LL;
typedef vector<int> VI;
typedef vector<LL> VL;
typedef pair<int, int> PII;
typedef pair<LL, LL> PLL;
typedef double db;

const int INF = 1e9 + 47;

struct Segtree
{
	struct Node
	{
		int mn = INF, mx = 0, st = -1;
	};
	int n;
	vector<Node> t;
	
	Segtree() {}
	Segtree(int _n)
	{
		n = 1;
		while (n < _n) n *= 2;
		t.resize(2 * n - 1);
	}
	
	void push(int v, int tl, int tr)
	{
		if (t[v].st == -1)
			return;
		t[v].mn = min(t[v].mn, t[v].st);
		t[v].mx = max(t[v].mx, t[v].st);
		if (tl + 1 != tr)
		{
			t[v * 2 + 1].st = t[v].st;
			t[v * 2 + 2].st = t[v].st;
		}
		t[v].st = -1;
	}
	void upd(int v, int tl, int tr, int l, int r, int x)
	{
		push(v, tl, tr);
		if (l <= tl && tr <= r)
		{
			t[v].st = x;
			push(v, tl, tr);
			return;
		}
		if (l >= tr || tl >= r)
			return;
		int tm = (tl + tr) / 2;
		upd(2 * v + 1, tl, tm, l, r, x);
		upd(2 * v + 2, tm, tr, l, r, x);
		t[v].mn = min(t[v * 2 + 1].mn, t[v * 2 + 2].mn);
		t[v].mx = max(t[v * 2 + 1].mx, t[v * 2 + 2].mx);
	}
	void upd(int l, int r, int x)
	{
		upd(0, 0, n, l, r, x);
	}
	PII query(int v, int tl, int tr, int l, int r)
	{
		push(v, tl, tr);
		//cerr << v << ' ' << tl << ' ' << tr << ' ' << t[v].mn << ' ' << t[v].mx << '\n';
		if (l <= tl && tr <= r)
			return {t[v].mn, t[v].mx};
		if (l >= tr || tl >= r)
			return {INF, -INF};
		int tm = (tl + tr) / 2;
		PII p1 = query(2 * v + 1, tl, tm, l, r);
		PII p2 = query(2 * v + 2, tm, tr, l, r);
		return {min(p1.F, p2.F), max(p1.S, p2.S)};
	}
	PII query(int l, int r)
	{
		PII res = query(0, 0, n, l, r);
		//cerr << "Query " << l << ' ' << r << ' ' << res.F << ' ' << res.S << '\n';
		return {res.F, res.S};
	}
} st;

const int N = 100'447;
VI g[N];
VI tps;
bool used[N];

void dfs(int v)
{
	used[v] = 1;
	for (auto to : g[v])
		if (!used[to])
			dfs(to);
	tps.PB(v);
}

int GetL(int pos, int L)
{
	PII p = st.query(L, pos + 1);
	if (p.F == p.S)
		return L;
	int l = L, r = pos;
	while (l + 1 < r)
	{
		int m = (l + r) / 2;
		p = st.query(m, pos + 1);
		if (p.F == p.S)
			r = m;
		else
			l = m;
	}
	//cerr << pos << ' ' << L << ' ' << r << '\n';
	return r;
}


int GetR(int pos, int R)
{
	PII p = st.query(pos, R + 1);
	if (p.F == p.S)
		return R;
	int l = pos, r = R;
	while (l + 1 < r)
	{
		int m = (l + r) / 2;
		p = st.query(pos, m + 1);
		if (p.F == p.S)
			l = m;
		else
			r = m;
	}
	return l;
}

string s = "";
VI l, r;
	
void upd(int L, int R, int x, int pl, int pr)
{
	//cerr << "UPD " << L << ' ' << R << ' ' << x << '\n';
	int val = st.query(L, L + 1).F;
	if (val < x)
		s += 'M';
	else
		s += 'm';
	l.PB(L + pl);
	r.PB(R + pr);
	st.upd(L, R + 1, x);
}

int main()
{
	ios::sync_with_stdio(0); 
	cin.tie(0);
	
	int n;
	cin >> n;
	VI a(n), b(n);
	FOR (i, 0, n) cin >> a[i];
	FOR (i, 0, n) cin >> b[i];
	
	vector<PII> v;
	int val = b[0], cnt = 1;
	FOR (i, 1, n)
	{
		if (b[i] == val)
			cnt++;
		else
		{
			v.PB({val, cnt});
			val = b[i];
			cnt = 1;
		}
	}
	v.PB({val, cnt});
	VI c(1, 0);
	FOR (i, 0, SZ(v))
		c.PB(c.back() + v[i].S);
	//cerr << v[0].F << ' ' << v[1].F << ' '<< v[2].F << '\n';
	int j = 0;
	VI pos;
	FOR (i, 0, n)
	{
		if (j < SZ(v) && a[i] == v[j].F)
		{
			pos.PB(i);
			j++;		
		}
	}
	if (j < SZ(v))
	{
		cout << -1 << '\n';
		return 0;
	}
	st = Segtree(n);
	FOR (i, 0, n)
		st.upd(i, i + 1, a[i]);
		
	
	j = 0;
	int idx = 0;
	FOR (i, 0, SZ(pos))
	{
		while (idx + v[j].S <= pos[i]) 
			idx += v[j++].S;
		g[i].PB(j);		
	}
	FOR (i, 0, SZ(pos))
	{
		if (!used[i])
			dfs(i);
	}
	reverse(ALL(tps));
	for (auto i : tps)
	{
		int ps = pos[i];
		int L = c[i];
		int R = c[i + 1] - 1;
		int ptr = GetL(ps, L);
		//cerr << ps << ' ' << L << ' ' << R << ' ' << ptr << '\n';
		while (ptr > L)
		{
			int x = GetL(ptr - 1, L);
			upd(x, ptr - 1, a[ps], 0, 1);
			ptr = x;
		}
		ptr = GetR(ps, R);
		while (ptr < R)
		{
			int x = GetR(ptr + 1, R);
			//cerr << i << ' ' << ptr << ' ' << x << ' ' << R << '\n';
			upd(ptr + 1, x, a[ps], -1, 0);
			ptr = x;			
		}
	}
	cout << SZ(s) << '\n';
	FOR (i, 0, SZ(s))
	{
		cout << s[i] << ' ' << l[i] + 1 << ' ' << r[i] + 1 << '\n';
	}
	
	
	return 0;
}