#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <string>
#include <algorithm>
#include <cmath>
#include <ctime>
#include <vector>
#include <queue>
#include <map>
#include <stack>
#include <set>
#include <bitset>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define ms(a, b) memset(a, b, sizeof(a))
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define eps 0.0000000001
#define IOS ios::sync_with_stdio(0);cin.tie(0);
#define random(a, b) rand()*rand()%(b-a+1)+a
#define pi acos(-1)
//const ll INF = 0x3f3f3f3f3f3f3f3fll;
const int inf = 1e9;
const int maxn = 1000 + 10;
const int maxm = 100000 + 10;
const int mod = 1000000007;
int head[maxn],nxt[maxm],head1[maxn],nxt1[maxm];
int dis[maxn];
bool vis[maxn];
int n,m,e,st,en,k,t;
struct note{int u,v,c;note(){}note(int u,int v,int c):u(u),v(v),c(c){}
}p[maxm];
struct POJ{int v,c;POJ(){}POJ(int v,int c):v(v),c(c){}bool operator < (const POJ& other)const{return c+dis[v]>other.c+dis[other.v];}
};
void addnote(int u,int v,int c){p[e]=note(u,v,c);nxt[e]=head[u];head[u]=e;nxt1[e]=head1[v];head1[v]=e++;
}
void dij(int src){memset(vis,0,sizeof(vis));for(int i=1;i<=n;i++) dis[i]=inf;dis[src]=0;priority_queue<POJ> que;que.push(POJ(src,0));while(!que.empty()){POJ pre=que.top();que.pop();vis[pre.v]=true;for(int i=head1[pre.v];i+1;i=nxt1[i]){if(dis[p[i].u]>dis[pre.v]+p[i].c){dis[p[i].u]=dis[pre.v]+p[i].c;que.push(POJ(p[i].u,0));}}while(!que.empty()&&vis[que.top().v]) que.pop();}
}
int a_star(int src){priority_queue<POJ> que;que.push(POJ(src,0));k--;while(!que.empty()){POJ pre=que.top();que.pop();if(pre.v==en){if(k) k--;else return pre.c;}for(int i=head[pre.v];i+1;i=nxt[i])if(pre.c+p[i].c<=t)que.push(POJ(p[i].v,pre.c+p[i].c));}return -1;
}
int main(){
#ifdef LOCALfreopen("input.txt", "r", stdin);
//    freopen("output.txt", "w", stdout);
#endifwhile(~scanf("%d%d",&n,&m)){scanf("%d%d%d%d",&st,&en,&k,&t);memset(head,-1,sizeof(head));memset(head1,-1,sizeof(head1));e=0;for(int i=0;i<m;i++){int u,v,c;scanf("%d%d%d",&u,&v,&c);addnote(u,v,c);}dij(en);if(dis[st]==inf){puts("Whitesnake!");continue;}
//        if(st==en) k++;int ans=a_star(st);if(ans==-1||ans>t){puts("Whitesnake!");}else{puts("yareyaredawa");}
//        printf("%d\n",a_star(st));
    }return 0;
}