#include <bits/stdc++.h>
using namespace std;
#define rep(i, x, limit) for (long long i = (long long)x; i < (long long)limit; i++)
#define REP(i, x, limit) for (long long i = (long long)x; i <= (long long)limit; i++)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define el endl
#define spa " "
#define Yes cout << "Yes" << el
#define No cout << "No" << el
#define YES cout << "YES" << el
#define NO cout << "NO" << el
#define inp(x) for(auto &i:x)cin>>i
#define eps (1e-10)
#define Equals(a,b) (fabs((a) - (b)) < eps )
#define debug(x) cerr << #x << " = " << x << el
using ll = long long;
using ull = unsigned long long;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
using vi = vector<int>;
using vl = vector<ll>;
using vvl = vector<vector<ll>>;
using vs = vector<string>;
using vb = vector<bool>;
const double pi = 3.141592653589793238;
const int inf = 1073741823;
const ll infl = 1LL << 60;
const string ABC = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const string abc = "abcdefghijklmnopqrstuvwxyz";
const ll MOD = 998244353;
#include<atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using vm = vector<mint>;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  ll t;cin>>t;
  vs SS={"Same","Different","Unknown"};
  while(t--){
    ll n,m;cin>>n>>m;
    vvl G(2*n);
    rep(i,0,m){
      ll a,b,c;cin>>a>>b>>c;
      a--;b--;
      if(c==1){
        G[a].push_back(b);
        G[b].push_back(a);
        G[a+n].push_back(b+n);
        G[b+n].push_back(a+n);
      }else{
        G[a].push_back(b+n);
        G[b+n].push_back(a);
        G[a+n].push_back(b);
        G[b].push_back(a+n);
      }
    }
    vl D(2*n,infl);
    D[0]=0;
    queue<ll> que;
    que.push(0);
    while(!que.empty()){
      ll v=que.front();que.pop();
      for(auto nv:G[v]){
        if(D[nv]>D[v]+1){
          D[nv]=D[v]+1;
          que.push(nv);
        }
      }
    }
    if(D[n-1]!=infl){
      cout<<SS[0]<<el;
      cout<<D[n-1]<<el;
    }else if(D[2*n-1]!=infl){
      cout<<SS[1]<<el;
      cout<<D[2*n-1]<<el;
    }else{
      cout<<SS[2]<<el;
    }
  }
}