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//============================================================================
// Name        : reo.cpp
// Author      : 
// Version     :
// Copyright   : Your copyright notice
// Description : Hello World in C++, Ansi-style
//============================================================================

#include <iostream>
#include <vector>
#include <deque>
#include <utility>
#include <algorithm>
#include <set>
using namespace std;
int ide=0;

class worker{
public:

	short no;
	short parent;
	short id;
	set<short> parids;
	set<short> cannot;
	deque<short> needs;
	deque<short> sub;
	worker(){
		no=0;
		parent=-1;
		id=ide;
		ide++;
	}
};
vector<worker> wrks;

deque<pair<worker*,worker*> > yespair;
deque<pair<worker*,worker*> > nopair;
set<short> leftwrks;
set<int> uncompatdir;
bool compar(short val1,short val2){
	return wrks[val1].no>wrks[val2].no;
}
/*void fill(worker* par){
	par->parids.insert(par->id);
	for (set<short>::iterator it = leftwrks.begin(); it != leftwrks.end(); ) {
		cout<<*it<<" ";
		bool notfound=false;
		for(set<short>::iterator ite=wrks[*it].needs.begin();ite!=wrks[*it].needs.end();ite++){
			if(par->parids.find(*ite)==par->parids.end()){
				notfound=true;
				break;
			}
		}
		if(notfound){
			it++;
		}
		else{
			par->sub.push_back(*it);
			wrks[*it].parent=par->id;
			wrks[*it].parids=set<short>(par->parids);
			it = leftwrks.erase(it);
		}
	}
	for(deque<short>::iterator it=par->sub.begin();it!=par->sub.end();it++){
		fill(&wrks[*it]);
	}
}*/
bool broken=false;
void push_parent(worker* wrk, worker* par){
	//cout<<wrk->id<<"-"<<par->id<<" ";
	if(par==wrk || par->parent==wrk->id){
		broken=true;
		return;
	}
	worker* parpar=par;
	while(par->parent!=-1){

	}
	par->cannot.insert(wrk->cannot.begin(), wrk->cannot.end());
	if(wrk->parent==-1){
		wrk->parent=par->id;

	}
	else{
		push_parent(&wrks[wrk->parent],par);
	}
}
int main() {
	ios_base::sync_with_stdio(0);
	int wc;
	int rc;
	cin>>wc;
	cin>>rc;
	wrks=vector<worker>(wc);
	worker* boss;
	for(int i=0;i<wc;i++){
		wrks[i].id=i;
		leftwrks.insert(i);
	}
	for(int i=0;i<rc;i++){

		short firstid;
		short secid;
		char comp;
		cin>>firstid;
		cin>>secid;
		cin>>comp;
		//cout<<i<<"m"<<firstid;
		if(comp=='T'){
			yespair.push_back(pair<worker*,worker*>(&wrks[firstid-1],&wrks[secid-1]));

			//push_parent(&wrks[firstid-1],&wrks[secid-1]);
			uncompatdir.insert(firstid-1);
			wrks[firstid-1].needs.push_back(secid-1);
		}
		else{
			nopair.push_back(pair<worker*,worker*>(&wrks[firstid-1],&wrks[secid-1]));
			wrks[secid-1].no++;
			wrks[firstid-1].cannot.insert(secid-1);
			uncompatdir.insert(secid-1);
		}
	}
	if(uncompatdir.size()==wrks.size()){
		cout<<"NIE";
		return 0;
	}
	/*for(deque<pair<worker*,worker*>>::iterator it=nopair.begin();it!=nopair.end();it++){

	}*/
	for(int i=0;i<wc;i++){

		//cout<<i<<" ";
		sort(wrks[i].needs.begin(),wrks[i].needs.end(),compar);
		for(deque<short>::iterator it=wrks[i].needs.begin();it!=wrks[i].needs.end();it++){
			push_parent(&wrks[i],&wrks[*it]);
			if(broken){
				cout<<"NIE";
				return 0;
			}
		}
	}
	/*for(set<int>::iterator it=uncompatdir.begin();it!=uncompatdir.end();it++){
		cout<<(*it)<<" "<<wrks[*it].id;
	}*/

	for(int i=0;i<=wc;i++){
		if(uncompatdir.find(i)==uncompatdir.end()){
			boss=&wrks[i];

			for(int j=0;j<=wc;j++){
				if(j!=i&&wrks[j].parent==-1){
					wrks[j].parent=i;
				}
			}
			//leftwrks.erase(i);

			break;
		}

	}

	for(int i=0;i<wc;i++){
		cout<<(wrks[i].parent+1)<<endl;
	}
	return 0;
}