#include<stdio.h>
#include<stdlib.h>

void DFS(int sour,int **mat,int *visited,int V){
    printf("%d",sour);
    visited[sour]=1;
    for(int i=0;i<V;i++){
        if(mat[sour][i]!=0 && visited[i]==0){
            DFS(i,mat,visited,V);
        }
    }
}

int main(){
    int V,E,r,c,itr,u,v,w,sour;
    scanf("%d",&v);
    if(V<0){
        printf("Invalid input");
        return 0;
        
    }
    scanf("%d",&E);
    int **mat;
    int *visited;
    mat=(int**)malloc(V *sizeof(int*));
    for(r=0;r<V;r++)
        mat[r] =(int**) malloc(V *sizeof(int));
    for(itr=1;itr<=E;itr++){
        scanf("%d%d%d",&u,&v,&w);
        mat[u][v]=w;
        
    }
    scanf("%d",&sour);
    visited =(int*)malloc(V *sizeof(int));
    printf("DFS Traversal starting from vertex %d:",sour);
    DFS(sour,mat,visited,V);
    
    return 0;
}