#include <bits/stdc++.h>

#define debug(x) cout << #x << " = " << x << endl
#define fori(i, ini, lim) for(int i = int(ini); i < int(lim); i++)
#define ford(i, ini, lim) for(int i = int(ini); i >= int(lim); i--)

using namespace std;

typedef long long ll;
typedef pair<int, int> ii;

inline void enter(int x) {
    cout << "+" << x;
}

inline void leave(int x) {
    cout << "-" << x;
}

inline void to_next(int x) {
    cout << "++" << x;
}

inline void to_prev(int x) {
    cout << "--" << x;
}

// type 0 -> from 000..000 to 100..000
// type 1 -> from 100..000 to 000..000
void roll(int left, int right, int type, int may_use) {
    may_use = min(may_use, right - left + 1);
    if(may_use == 1) {
        if(type == 0) {
            enter(right);
            ford(i, right, left + 1) {
                to_prev(i);
            }
        }
        else {
            fori(i, left, right) {
                to_next(i);
            }
            leave(right);
        }
        return;
    }
    if(type == 0) {
        roll(left + 1, right, 0, may_use);
        enter(left);
        roll(left + 1, right, 1, may_use - 1);
    }
    else {
        roll(left + 1, right, 0, may_use - 1);
        leave(left);
        roll(left + 1, right, 1, may_use);
    }
}

int main() {
#ifdef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif

    ios_base::sync_with_stdio(false);

    int n, k;
    cin >> n >> k;
    roll(1, n, 0, k);
    leave(1);
    cout << '\n';

    return 0;
}