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#include <bits/stdc++.h>

#define scanf(arg...) (scanf(arg)?:0)
#define FOR(x, b, e) for(int x = b; x <= (e); ++x)
#define FORD(x, b, e) for(int x = b; x >= (e); --x)
#define REP(x, b) for(int x = 0; x < (b); ++x)
#define SIZE(c) ((int)c.size())
#define ALL(c) (c).begin(), (c).end()
#define PB push_back
#define MP make_pair
#define ST first
#define ND second

using namespace std;

typedef long double LD;
typedef long long LL;
typedef unsigned long long ULL;
typedef vector <int> VI;
typedef pair <int, int> PII;
typedef vector <PII> VPII;

const int MAXN = 1e4 + 9;

VI tab[MAXN];
VI tab2[MAXN];
VI tab3[MAXN];
VI vec;
int parent[MAXN];
bitset <MAXN> odw;
bitset <MAXN> mozna;

void usun(vector <int>& v, int poz)
{
    swap(v[poz], v.back());
    v.pop_back();
}

void dfs(int poz, vector <int>& v)
{
    odw[poz] = true;
    v.PB(poz);
    
    REP(i, SIZE(tab3[poz]))
      {
         if(!odw[tab3[poz][i]])
           dfs(tab3[poz][i], v);
      }
}

void eliminacja(vector <int>& v)
{
    REP(i, SIZE(v))
      {
          for(int j = 0; j < SIZE(tab[v[i]]); j++)
            {
                if(odw[tab[v[i]][j]] != odw[v[i]])
                  usun(tab[v[i]], j), j--;
            }
          
          for(int j = 0; j < SIZE(tab2[v[i]]); j++)
            {
                if(odw[tab2[v[i]][j]] != odw[v[i]])
                  usun(tab2[v[i]], j), j--;
            }
          
          for(int j = 0; j < SIZE(tab3[v[i]]); j++)
            {
                if(odw[tab3[v[i]][j]] != odw[v[i]])
                  usun(tab3[v[i]], j), j--;
            }
      }
}

int korzen(vector <int>& v)
{
    mozna.reset();
    
    REP(i, SIZE(v))
      {
          if(SIZE(tab[v[i]]) == 0)
            mozna[v[i]] = true;
      }
    
    REP(i, SIZE(v))
      {
          REP(j, SIZE(tab2[v[i]]))
            {
                mozna[tab2[v[i]][j]] = false;
            }
      }
    
    REP(i, SIZE(v))
      {
          if(mozna[v[i]])
            return v[i];
      }
    
    return -1;
}

void usun_korzen(vector <int>& v, int root)
{
    odw[root] = false;
    eliminacja(v);
}

int rek(int poz)
{
    vector <int> tmp;
    odw.reset();
    
    dfs(poz, tmp);
    eliminacja(tmp);
    
    int root = korzen(tmp), temp;
    
    if(root == -1)
      return -1;
    
    usun_korzen(tmp, root);
    
    REP(i, SIZE(tmp))
      {
          if(tmp[i] != root)
            {
                if(parent[tmp[i]] == -2)
                  {
                      temp = rek(tmp[i]);
                      
                      if(temp == -1)
                        return -1;
                      
                      parent[temp] = root;
                  }
            }
      }
    
    return root;
}

int main()
{
    int n, m, a, b, temp;
    char ch;
    
    cin>>n>>m;
    
    REP(i, m)
      {
          scanf("%d %d %c", &a, &b, &ch);
          
          a--;
          b--;
          
          if(ch == 'T')
            {
                tab[a].PB(b);
                tab3[a].PB(b);
                tab3[b].PB(a);
            }
          
          else
            {
                tab2[a].PB(b);
            }
      }
    
    REP(i, n)
      vec.PB(i), parent[i] = -2, odw[i] = true;
    
    int root = korzen(vec);
    
    if(root == -1)
      {
          puts("NIE");
          return 0;
      }
    
    parent[root] = -1;
    usun_korzen(vec, root);
    
    REP(i, n)
      {
          if(i != root)
            {
                if(parent[i] == -2)
                  {
                      temp = rek(i);
                      
                      if(temp == -1)
                        {
                            puts("NIE");
                            return 0;
                        }
                      
                      parent[temp] = root;
                  }
            }
      }
    
    REP(i, n)
      {
         printf("%d\n", parent[i] + 1);
      }
    
    return 0;
}