#include<stdio.h>

void DFS(int sour,int**mat,int *visited) {
    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;
}