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#include<bits/stdc++.h>
using namespace std;
# ifdef DEB
# define debug(...) fprintf(stderr, __VA_ARGS__)
# else
# define debug(...)
#endif
#define F first
#define S second
#define MP make_pair
#define PB push_back
#define LL long long
#define LD long double
#define PII pair<int, int>
#define PLL pair<LL, LL>
#define pb pop_back
#define VI vector<int> 
#define VPI vector<PII> 
#define FOR(i,a,b) for(int i = (a); i <= (b); i++)
#define FORD(i,a,b) for(int i = (a); i >= (b); i--)
#define RE(i,n) FOR(i,1,n)
#define REP(i,n) FOR(i,0,(int)(n)-1)
#define ALL(x) (x).begin(), (x).end()
#define siz(V) ((int)V.size())

int n, m, vis[1005], B[1005], globalnum=1;
char C[10];
VI notson[1005], son[1005];
VPI V[1005];
int R[1005], par[1005];
//bool no[1005][1005], yes[1005][1005];
//vector<int> hehe[1005];

void remove(int ind)
{
  REP(i, siz(son[ind]))
    par[son[ind][i]]--;
  son[ind].clear();
  while(!V[ind].empty())
  {
    int s=siz(V[ind])-1;
    int u=V[ind][s].F, i=V[ind][s].S;
    int w=V[u][siz(V[u])-1].F, ind2=V[u][siz(V[u])-1].S;
    V[w][ind2].S=i;
    swap(V[u][i], V[u][siz(V[u])-1]);
    V[u].pb();
    V[ind].pb();
  }
}

bool go(VI X, int prev, int num)
{
  int root=-1, s=siz(X);
  //debug("lol %d %d %d %d %d\n",s, prev, num, root, X[0]);
  REP(i, s)
    vis[X[i]]=num;
  REP(i, s)
  {
    for(int j=siz(notson[X[i]])-1; j>=0; j--)
    {
      int u=notson[X[i]][j];
      if(vis[u]!=num)
      {
        swap(notson[X[i]][j], notson[X[i]][siz(notson[X[i]])-1]);
        notson[X[i]].pb();
      }
    }
  }
  REP(i, s)
  {
    if(notson[X[i]].empty() && par[X[i]]==0)
    {
      root=X[i];
      break;
    }
  }
  if(root==-1)
    return false;
  //REP(i, s)
  //  debug("aa %d\n", X[i]);
  //debug("%d %d %d %d\n",s, prev, num, root);
  R[root]=prev;
  remove(root);
  B[root]=1;
  REP(i, s)
    vis[X[i]]=0;
  vis[root]=num;
  REP(i, s)
  {
    if(B[X[i]])
      continue;
    VI Y;
    Y.PB(X[i]);
    vis[X[i]]=1;
    REP(i, siz(Y))
    {
      REP(j, siz(V[Y[i]]))
      {
        if(!B[V[Y[i]][j].F] && !vis[V[Y[i]][j].F])
        {
          vis[V[Y[i]][j].F]=num;
          Y.PB(V[Y[i]][j].F);
        }
      }
    }
    globalnum++;
    if(!go(Y, root, globalnum))
      return false;
  }
  return true;
}

int main()
{
  //ios_base::sync_with_stdio(0);
  scanf("%d%d", &n, &m);
  REP(i, m)
  {
    int a, b;
    scanf("%d%d%s", &a, &b, C);
   // debug("%d %d %c\n", a, b, C[0]);
    if(C[0]=='T')
    {
     // hehe[a].PB(b);
      son[b].PB(a);
      par[a]++;
      V[a].PB(MP(b, siz(V[b])));
      V[b].PB(MP(a, siz(V[a])-1));
    }
    else
    {
      notson[b].PB(a);
     // no[a][b]=1;
    }
  }
  VI X;
  RE(i, n)
    X.PB(i);
  if(go(X, 0, 1))
  {
    //printf("TAK\n");
    /*RE(i, n)
    {
      int v=i;
      while(v!=0)
      {
        if(no[i][v])
        {
          printf("a\n");
          return 0;
        }
        yes[i][v]=1;
        v=R[v];
      }
      REP(j, siz(hehe[i]))
      {
        if(!yes[i][hehe[i][j]])
        {
          printf("b\n");
          return 0;
        }
      }
    }*/
    RE(i, n)
      printf("%d\n", R[i]);
	}
	else
	  printf("NIE\n");
	return 0;
}