#include <iostream.h>
#include <fstream.h>
int main()
{
    ifstream f("semne.in");
    ofstream g("semne.out");
    int n,s,v[50000],i,nr;
    nr=0;
    f>>n>>s;
    for (i=0;i<n;i++)
        f>>v[i];
    f.close();
    for (i=0;i<n;i++)
        {
        if (v[i]>=nr) {g<<"+";nr-=v[i];}
           else {g<<"-";nr+=v[i];}
        }
    g.close();
    return 0;
}