рюкзак

#include <iostream>
#include <cmath>
#include <vector>
#include <queue>
#include <algorithm>
#include <string>
#include <stack>
#include <set>
#include <map>
#define pii pair <int, int>
#define pb(x) push_back(x)
using namespace std;
using ll = long long;
using ld = long double;
using db = double;
void cv(vector <int> &v) {
    for (auto x : v) cout << x << ' ';
    cout << "\n";
}

void cvl(vector <ll> &v) {
    for (auto x : v) cout << x << ' ';
    cout << "\n";
}


void cvv(vector <vector <int> > &v) {
    for (auto x : v) cv(x);
    cout << "\n";
}

void cvb(vector <bool> v) {
    for (bool x : v) cout << x << ' ';
    cout << "\n";
}

void cvs(vector <string>  v) {
    for (auto a : v) {
        cout << a << "\n";
    }
}

void cvp(vector <pii> a) {
    for (auto p : a) {
        cout << p.first << ' ' << p.second << "\n";
    }
    cout << "\n";
}


bool sh = 0;

vector <vector <bool> > can1, can2;
vector <vector <pii> > pr1, pr2;
//vector <pii> ans1, ans2;
vector <int> ans1, ans2;
vector <int> w1, w2;

void bld(vector <vector <bool> > &can, int &M, int &N, vector <vector <pii> > &pr, vector <int> &w) {
    int n, m = 0;
    cin >> n;
    N = n;
    w.resize(n + 1);
    for (int i = 1; i <= n; ++i) {
        cin >> w[i];
        m += w[i];
    }
    M = m;
    can.assign(m + 1, vector <bool> (n + 1, 0));
    pr.assign(m + 1, vector <pii> (n + 1, {-1, -1}));
    for (int i = 0; i <= n; ++i) {
        can[0][i] = 1;
    }
    for (int i = 1; i <= m; ++i) {
        for (int j = 1; j <= n; ++j) {
            can[i][j] = can[i][j - 1];
            pr[i][j] = pr[i][j - 1];

            if (i - w[j] < 0) {
                continue;
            }

            if (!can[i - w[j]][j - 1]) {
                continue;
            }

            can[i][j] = 1;
            pr[i][j] = {i - w[j], j - 1};
        }
    }
}



int main() {
    /*ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);*/
    int s; cin >> s;
    int m1, m2, n1, n2;
    bld(can1, m1, n1, pr1, w1);
    bld(can2, m2, n2, pr2, w2);
    for (int i = s; i <= m1; ++i) {
        if (i - s > m2) {
            continue;
        }
        if (can1[i][n1] && can2[i - s][n2]) {

            if (sh) {
                cout << "i i - s = " << i << ' ' << i - s << "\n";
            }

            pii p;
            p = {i, n1};
            p = pr1[p.first][p.second];
            int s0 = 0;
            while (p.first != 0 && p != pii{-1, -1}) {
                ans1.push_back(w1[p.second]);
                s0 += w1[p.second];
                p = pr1[p.first][p.second];

            }
            ans1.push_back(i - s0);
            if (sh) {
                cout << "s0 = " << s0 << "\n";
            }

            s0 = 0;
            p = {i - s, n2};
            p = pr2[p.first][p.second];
            while (p.first != 0 && p != pii{-1, -1}) {
                ans2.push_back(w2[p.second]);
                s0 += w2[p.second];
                p = pr2[p.first][p.second];

            }
            ans2.push_back(i - s - s0);
            if (sh) {
                cout << "s0 = " << s0 << "\n";
            }

            if (sh) {
                cout << "ans1\n";
                cv(ans1);
                cout << "ans2\n";
                cv(ans2);
            }
            for (int i: ans1 ) {
                cout << "+" << i << " ";
            }
            for (int i: ans2) {
                cout << "-" << i << " ";
            }

            //break;
            exit(0);
        }
    }
    //cout << "done\n";


    if (sh) {
        cout << "can1\n";
        for (auto v: can1) {
            cvb(v);
        }
        cout << "\n";

        cout << "pr1\n";
        for (auto v: pr1) {
            for (auto p: v) {
                cout << "(" << p.first << "," << p.second << ") ";
            } cout << "\n";
        } cout << "\n";

        cout << "can2\n";
        for (auto v: can2) {
            cvb(v);
        }

        cout << "\n";

        cout << "pr2\n";
        for (auto v: pr2) {
            for (auto p: v) {
                cout << "(" << p.first << "," << p.second << ") ";
            } cout << "\n";
        } cout << "\n";
    }

    cout << "Impossible";
}