x[60][100100],a[60],m,i;char p[60];f(i,s){a[i]|s-m?s<m&&a[i]&&!x[i][s]++?p[i]=43,f(i+1,s+a[i]),p[i]--,f(i+1,s*a[i]):0:exit(!puts(p+1));}main(){for(scanf("%*d%d",&m);~scanf("%d",a+i++););f(1,*a);}