#include <stdio.h>
#include <stdlib.h>
#define MAXN 100010


int inserir(int atual, int arestas, FILE* arq);

typedef struct node {
	int num;
	int peso;
	node* next;
	node* head;
}node;

int N;
node grafo[MAXN];

int main(){
	FILE* arq;
	int n;

	arq=fopen("input1.txt", "r");
  	if(arq==NULL){
  		return 0;
	}
  	fscanf(arq, "%d", &N);
  	for(int i=1;i<=N;i++){
    		grafo[i].next=NULL;
  		fscanf(arq, "%d",&n );
    		inserir(i, n, arq);
  	}
  	fclose(arq);
  	return 0;
}

int inserir(int atual, int arestas, FILE* arq){
	int v, w;
	node* aux;
	node* last;
	for(int i=0;i<arestas;i++){
	   	fscanf(arq, "%d %d", &v, &w);
     		last = grafo+atual;
    		while(last->next!=NULL){
      			last= last->next;
    		}
    		aux = (node*) malloc((int)sizeof(node));
  		aux->num = v;
  		aux->next = NULL;
    		aux->peso = w;
    		if(grafo[atual].next==NULL){
      			grafo[atual].next=aux;
    		}
    		else{
    			last=grafo[atual].next;
    			while(last->next!=NULL){
    	  			last= last->next;
    			}
    			last->next = aux;
     		}
  	}
}