#include <bits/stdc++.h>
using namespace std;

#define forr(x,arr) for(auto&& x:arr)
#define _overload3(_1,_2,_3,name,...) name
#define _rep2(i,n) _rep3(i,0,n)
#define _rep3(i,a,b) for(int i=int(a);i<int(b);++i)
#define rep(...) _overload3(__VA_ARGS__,_rep3,_rep2,)(__VA_ARGS__)
#define _rrep2(i,n) _rrep3(i,0,n)
#define _rrep3(i,a,b) for(int i=int(b)-1;i>=int(a);i--)
#define rrep(...) _overload3(__VA_ARGS__,_rrep3,_rrep2,)(__VA_ARGS__)
#define all(x) (x).begin(),(x).end()
#define bit(n) (1LL<<(n))
#define sz(x) ((int)(x).size())
#define TEN(n) ((ll)(1e##n))
#define fst first
#define snd second

string DBG_DLM(int &i){return(i++==0?"":", ");}
#define DBG_B(exp){int i=0;os<<"{";{exp;}os<<"}";return os;}
template<class T>ostream&operator<<(ostream&os,vector<T>v);
template<class T>ostream&operator<<(ostream&os,set<T>v);
template<class T>ostream&operator<<(ostream&os,queue<T>q);
template<class T>ostream&operator<<(ostream&os,priority_queue<T>q);
template<class T,class K>ostream&operator<<(ostream&os,pair<T,K>p);
template<class T,class K>ostream&operator<<(ostream&os,map<T,K>mp);
template<class T,class K>ostream&operator<<(ostream&os,unordered_map<T,K>mp);
template<int I,class TPL>void DBG(ostream&os,TPL t){}
template<int I,class TPL,class H,class...Ts>void DBG(ostream&os,TPL t){os<<(I==0?"":", ")<<get<I>(t);DBG<I+1,TPL,Ts...>(os,t);}
template<class T,class K>void DBG(ostream&os,pair<T,K>p,string delim){os<<"("<<p.first<<delim<<p.second<<")";}
template<class...Ts>ostream&operator<<(ostream&os,tuple<Ts...>t){os<<"(";DBG<0,tuple<Ts...>,Ts...>(os,t);os<<")";return os;}
template<class T,class K>ostream&operator<<(ostream&os,pair<T,K>p){DBG(os,p,", ");return os;}
template<class T>ostream&operator<<(ostream&os,vector<T>v){DBG_B(forr(t,v){os<<DBG_DLM(i)<<t;});}
template<class T>ostream&operator<<(ostream&os,set<T>s){DBG_B(forr(t,s){os<<DBG_DLM(i)<<t;});}
template<class T>ostream&operator<<(ostream&os,queue<T>q){DBG_B(for(;q.size();q.pop()){os<<DBG_DLM(i)<<q.front();});}
template<class T>ostream&operator<<(ostream&os,priority_queue<T>q){DBG_B(for(;q.size();q.pop()){os<<DBG_DLM(i)<<q.top();});}
template<class T,class K>ostream&operator<<(ostream&os,map<T,K>m){DBG_B(forr(p,m){os<<DBG_DLM(i);DBG(os,p,"->");});}
template<class T,class K>ostream&operator<<(ostream&os,unordered_map<T,K>m){DBG_B(forr(p,m){os<<DBG_DLM(i);DBG(os,p,"->");});}
#define DBG_OVERLOAD(_1,_2,_3,_4,_5,_6,macro_name,...)macro_name
#define DBG_LINE(){char s[99];sprintf(s,"line:%3d | ",__LINE__);cerr<<s;}
#define DBG_OUTPUT(v){cerr<<(#v)<<"="<<(v);}
#define DBG1(v,...){DBG_OUTPUT(v);}
#define DBG2(v,...){DBG_OUTPUT(v);cerr<<", ";DBG1(__VA_ARGS__);}
#define DBG3(v,...){DBG_OUTPUT(v);cerr<<", ";DBG2(__VA_ARGS__);}
#define DBG4(v,...){DBG_OUTPUT(v);cerr<<", ";DBG3(__VA_ARGS__);}
#define DBG5(v,...){DBG_OUTPUT(v);cerr<<", ";DBG4(__VA_ARGS__);}
#define DBG6(v,...){DBG_OUTPUT(v);cerr<<", ";DBG5(__VA_ARGS__);}
#define DEBUG0(){DBG_LINE();cerr<<endl;}
#ifdef LOCAL
#define out(...){DBG_LINE();DBG_OVERLOAD(__VA_ARGS__,DBG6,DBG5,DBG4,DBG3,DBG2,DBG1)(__VA_ARGS__);cerr<<endl;}
#else
#define out(...)
#endif

using ll=long long;
using pii=pair<int,int>;using pll=pair<ll,ll>;using pil=pair<int,ll>;using pli=pair<ll,int>;
using vs=vector<string>;using vvs=vector<vs>;using vvvs=vector<vvs>;
using vb=vector<bool>;using vvb=vector<vb>;using vvvb=vector<vvb>;
using vi=vector<int>;using vvi=vector<vi>;using vvvi=vector<vvi>;
using vl=vector<ll>;using vvl=vector<vl>;using vvvl=vector<vvl>;
using vd=vector<double>;using vvd=vector<vd>;using vvvd=vector<vvd>;
using vpii=vector<pii>;using vvpii=vector<vpii>;using vvvpii=vector<vvpii>;
template<class A,class B>bool amax(A&a,const B&b){return b>a?a=b,1:0;}
template<class A,class B>bool amin(A&a,const B&b){return b<a?a=b,1:0;}
ll ri(){ll l;cin>>l;return l;} string rs(){string s;cin>>s;return s;}

using Weight = int;
struct Edge {
	int dst;
	Weight weight;
	Edge() : dst(0), weight(0) {}
	Edge(int d, Weight w = 1) : dst(d), weight(w) {}
};
ostream &operator<<(ostream &os, const Edge &e) { return os << e.dst; }
using Edges = vector<Edge>;
using Graph = vector<Edges>;

ll solve() {
	int n = ri(), m = ri(), k = ri(), s = ri(), t = ri();

	vi A(m), B(m), C(m);

	vvi V(n);
	rep(i, m) {
		int a = ri() - 1, b = ri(), c = ri();
		A[i] = a;
		B[i] = b;
		C[i] = c;
		V[a].emplace_back(b);
		V[a+1].emplace_back(c);
	}

	V[0].emplace_back(s);
	V[n-1].emplace_back(t);

	int cnt = 0;
	vector<map<int, int>> I(n);

	rep(i, n) {
		sort(all(V[i]));
		V[i].erase(unique(V[i].begin(), V[i].end()), V[i].end());
		rep(j, sz(V[i])) {
			I[i][V[i][j]] = cnt++;
		}
	}

	Graph G(cnt);

	rep(i, m) {
		int a = A[i], b = B[i], c = C[i];
		int v1 = I[a][b];
		int v2 = I[a+1][c];
		G[v1].emplace_back(v2, 0);
		out(v1, v2);
	}

	rep(i, n) {
		int nv = sz(V[i]);
		rep(j, nv-1) {
			int f1 = V[i][j];
			int f2 = V[i][j+1];
			int v1 = I[i][f1];
			int v2 = I[i][f2];
			G[v1].emplace_back(v2, abs(f1 - f2));
			G[v2].emplace_back(v1, abs(f1 - f2));
			out(v1, v2);
		}
	}

	int start = I[0][s];
	int goal = I[n-1][t];

	out(G);
	out(start);
	out(goal);

	vl D(cnt, 1e18);
	{
		priority_queue<pli, vector<pli>, greater<pli>> q;
		D[start] = 0;
		q.emplace(0, start);
	
		while (!q.empty()) {
			ll c; int v;
			tie(c, v) = q.top(); q.pop();
			out(c, v);
	
			if (v == goal) {
				return D[v];
			}
			if (D[v] < c) continue;
	
			forr(edg, G[v]) {
				int nv = edg.dst;
				ll nc = c + edg.weight;
				if (D[nv] > nc) {
					D[nv] = nc;
					q.emplace(nc, nv);
				}
			}
		}
	}
	out(D);
	return -1;
}

void Main() {
	cout << solve() << endl;
}

signed main() {
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	Main();
	return 0;
}