#include <bits/stdc++.h>

#define mp make_pair
#define mt make_tuple
#define fi first
#define se second
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define forn(i, n) for (int i = 0; i < (int)(n); ++i)
#define for1(i, n) for (int i = 1; i <= (int)(n); ++i)
#define ford(i, n) for (int i = (int)(n) - 1; i >= 0; --i)
#define fore(i, a, b) for (int i = (int)(a); i <= (int)(b); ++i)

using namespace std;

typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<pii> vpi;
typedef vector<vi> vvi;
typedef long long i64;
typedef vector<i64> vi64;
typedef vector<vi64> vvi64;
typedef pair<i64, i64> pi64;
typedef double ld;

template<class T> bool uin(T &a, T b) { return a > b ? (a = b, true) : false; }
template<class T> bool uax(T &a, T b) { return a < b ? (a = b, true) : false; }

vi sift(vi a, int x) {
    vi b;
    for (int y: a) if (abs(y) != x) b.pb(y);
    return b;
}

bool trivial(vi a) {
    vi st;
    for (int x: a) {
        if (st.empty() || st.back() + x) st.pb(x);
        else st.pop_back();
    }
    return st.empty();
}

int n, l;

bool good(vi a) {
    if (trivial(a)) return false;
    for1(i, n) if (!trivial(sift(a, i))) return false;
    return true;
}

vi best;

void rec(vi &a) {
    if (a.size() >= best.size()) return;
    if (good(a)) {
        best = a;
        return;
    }
    for1(i, n) {
        a.pb(i);
        rec(a);
        a.pop_back();

        a.pb(-i);
        rec(a);
        a.pop_back();
    }
}

void act(vi v, vector<pii> &p) {
    for (int x: v) {
        for1(i, abs(x) - 1) p.pb({i, 0});
        if (x > 0) {
            p.pb({x, 0});
            p.pb({x, 1});
            p.pb({x - 1, 1});
            p.pb({x - 1, 0});
        } else {
            p.pb({-x - 1, 1});
            p.pb({-x, 1});
            p.pb({-x, 0});
            p.pb({-x - 1, 0});
        }
        ford(i, abs(x) - 1) p.pb({i, 0});
    }
}

vi seq(vi c) {
    if (c.size() == 1) return c;
    int x = c.back();
    c.pop_back();
    vi res = seq(c);
    vi ans = res;
    ans.pb(x);
    reverse(all(res));
    for (int y: res) ans.pb(-y);
    ans.pb(-x);
    return ans;
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.precision(10);
    cout << fixed;
#ifdef LOCAL_DEFINE
    freopen("input.txt", "rt", stdin);
#endif

    int n;
    string s;
    cin >> n >> s;
    vi good(1 << n);
    forn(i, 1 << n) good[i] = s[i] - '0';

    bool ok = good[0];
    forn(i, 1 << n) forn(j, n) {
        if ((i >> j) & 1) continue;
        if (!good[i] && good[i | (1 << j)]) ok = false;
    }

    if (!ok) cout << "Impossible\n";
    else {
        cout << "Possible\n";
        vector<pii> ans = {{0, 0}};
        forn(i, 1 << n) {
            if (good[i]) continue;
            bool ok = true;
            forn(j, n) if ((i >> j) & 1) ok &= good[i ^ (1 << j)];
            if (!ok) continue;
            vi c;
            forn(j, n) if ((i >> j) & 1) c.pb(j + 1);
            act(seq(c), ans);
        }
        cout << ans.size() - 1 << '\n';
        for (auto w: ans) cout << w.fi << ' ' << w.se << '\n';
    }

#ifdef LOCAL_DEFINE
    cerr << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
#endif
    return 0;
}


Measured memory_bytes: 640