#include <fstream>

using namespace std;

ifstream in("semne.in");
ofstream out("semne.out");

const int NMAX = 50000;

typedef long long I64;

int v[NMAX+2];
I64 N,S, sum, diff;

int main() {
    in >> N >> S;
    for( int i = 1;  i <= N;  ++i ) {
        in >> v[i];
        sum += v[i];
    }
    for( int i = 1;  i <= N;  ++i ) {
        if( diff > 0 ) {
            out << '-';
            diff--;
        }
        else if( diff < 0 ) {
            out << '+';
            diff++;
        }
        else if( diff == 0 ) {
            out << '+';
            diff++;
        }
    }
    out << '\n';
    return 0;
}