char S[200001];
s[100000],x[200000],i,j;
main(N){
	for(scanf("%d%*c%s",&N,S);i<N;++i)
		S[i]&1?x[x[i]=s[--j]]=i:(s[j++]=i);
	for(;j<N;)printf("%d\n",x[j++]+1);
}