#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(sour,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;
}