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

void DFS(int sour,int **mat,int *visited,int V){
    printf("%d ",sour);
    visited[sour]=1;
    for(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,u,v,w,sour,i;
    scanf("%d",&V);
    if(V<0){
        printf("Invalid input");
        return 0;
    }
    scanf("%d",&E);
    if(E<0){
        printf("Invalid input");
        return 0;
    }
    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=0;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;
}