Go: package main

import (
	"bufio"
	"fmt"
	"io"
	"os"
	"strconv"
)

const (
	MAX_N      = 10000
	MAX_WEIGHT = 100000
)

type Edge struct {
	start  int
	end    int
	weight int
}

type ShortestInfo struct {
	edges    []Edge
	shortest int
}

func main() {
	doMain(os.Stdin)
}

func doMain(reader io.Reader) {
	sc := bufio.NewScanner(reader)
	sc.Split(bufio.ScanWords)

	n, err := nextInt(sc)
	if err != nil {
		panic(err)
	}

	shortestList := make([]ShortestInfo, n)
	for i := 1; i < n; i++ {
		shortestList[i] = ShortestInfo{edges: []Edge{}, shortest: MAX_N*MAX_WEIGHT + 1}
	}

	adjacentMatrix, err := createAdjacentMatrix(n, sc)
	if err != nil {
		panic(err)
	}

	sssp([]int{0}, shortestList, adjacentMatrix)
	for _, v := range shortestList {
		fmt.Println(v.getEnd(), v.shortest)
	}
}

func (si ShortestInfo) getEnd() int {
	if len(si.edges) == 0 {
		return 0
	} else {
		return si.edges[len(si.edges)-1].end
	}
}

func createAdjacentMatrix(n int, sc *bufio.Scanner) ([][]int, error) {
	adjacentMatrix := make([][]int, n)
	for i := 0; i < n; i++ {
		id, err := nextInt(sc)
		if err != nil {
			return nil, err
		}
		adjacentMatrix[id] = make([]int, n)
		for j := 0; j < n; j++ {
			adjacentMatrix[id][j] = -1
		}
		vertexNum, err := nextInt(sc)
		if err != nil {
			return nil, err
		}
		for j := 0; j < vertexNum; j++ {
			v, err := nextInt(sc)
			if err != nil {
				return nil, err
			}
			c, err := nextInt(sc)
			if err != nil {
				return nil, err
			}
			adjacentMatrix[id][v] = c
		}
	}
	return adjacentMatrix, nil
}

func sssp(nodeStack []int, shortestList []ShortestInfo, adjacentMatrix [][]int) {
	for len(nodeStack) > 0 {
		currentNode := nodeStack[0]
		nodeStack = nodeStack[1:]
		currentShortest := getShortest(currentNode, shortestList)
		adjacents := findAdjacents(currentNode, adjacentMatrix)
		for i := 0; i < len(adjacents); i++ {
			adj := adjacents[i]
			if currentShortest.shortest+adj.weight < getShortest(adj.end, shortestList).shortest {
				setShortest(adj.end, adj, currentShortest, shortestList)
				nodeStack = append(nodeStack, adj.end)
			}
		}
	}
}

func getShortest(node int, shortestList []ShortestInfo) ShortestInfo {
	return shortestList[node]
}

func setShortest(node int, edge Edge, currentShortest ShortestInfo, shortestList []ShortestInfo) {
	newEdges := make([]Edge, len(currentShortest.edges)+1)
	for i := 0; i < len(newEdges)-1; i++ {
		newEdges[i] = currentShortest.edges[i]
	}
	newEdges[len(newEdges)-1] = edge
	shortestInfo := ShortestInfo{edges: newEdges, shortest: currentShortest.shortest + edge.weight}
	shortestList[node] = shortestInfo
}

func findAdjacents(currentNode int, adjacentMatrix [][]int) []Edge {
	adjacents := adjacentMatrix[currentNode]
	edges := []Edge{}
	for i, v := range adjacents {
		if v >= 0 {
			edges = append(edges, Edge{start: currentNode, end: i, weight: v})
		}
	}
	return edges
}

func nextInt(sc *bufio.Scanner) (int, error) {
	sc.Scan()
	return strconv.Atoi(sc.Text())
}

C++: #include<iostream>
#include<algorithm>
#include<queue>

using namespace std;

static const int MAX = 10000;
static const int INFTY = (1<<20);
static const int WHITE = 0;
static const int GRAY = 1;
static const int BLACK = 2;

int n;
vector<pair<int,  int> > adj[MAX];

void dijkstra(){
priority_queue<pair<int, int> > PQ;
int color[MAX];
int d[MAX];
for(int i=0; i<n; i++){
d[i] = INFTY;
color[i] = WHITE;
}

d[0] = 0;
PQ.push(make_pair(0, 0));
color[0] = GARY;

while( !PQ.empty() ) {
pair<int, int> f = PQ.top(); PQ.pop();
int u = f.second;

color[u] = BLACK;

if(d[u] < f.first * (-1) ) continue;

for(int j=0; j<adj[u].size(); j++) {
int v = adj[u][j].first;
if(color[v] == BLACK) continue;
if(d[v] > d[u] + adj[u][j].second){
d[v] = d[u] + adj[u][j].second;

PQ.push(make_pair(d[v] * (-1), v));
color[v] = GARY;
}
}
}

for(int i=0; i<n; i++){
cout << i << " " << (d[i] == INFTY ? - 1 : d[i]) << endl;
}
}

int main(){
int k, u, v, c;

cin >> n;
for(int i=0; i<n; i++){
cin >> u >> k;
for(int j=0; j<k; j++){
cin >> v >> c;
adj[u].push_back(make_pair(v, c));
}
}

dijkstra();

return 0;
}

C++: #include <iostream>
#include <vector>
#include <limits>
#include <queue>

using namespace std;

struct Node {
  int label;
  int weight;

  bool operator>(const Node& other) const{
    return weight > other.weight;
  }
};

using ListGraph = vector<vector<Node>>;


const int max_num = numeric_limits<int>::max();


// priority_queueはpriorityが大きいのもから取り出す。
// デフォルトでは < (less<T>)を要素の比較に用いる。
// lessの場合要素が小さい時に入れ替える、つまりmaxHeapであり、priortyが大きいものから取り出される。

vector<int> shortest_cost(ListGraph &list_graph, int started_label) {
  vector<bool> visited_vertices(list_graph.size() ,false);
  vector<int> costs(list_graph.size(), max_num);
  priority_queue<Node, vector<Node>, greater<Node>> adjacency_costs;

  costs[started_label] = 0;
  adjacency_costs.push({started_label, costs[started_label]});

  while(!adjacency_costs.empty()) {
    Node nearest_node = adjacency_costs.top();
    adjacency_costs.pop();

    if(nearest_node.weight != costs[nearest_node.label]) {
      continue;
    }

    for(int i = 0; i < list_graph[nearest_node.label].size(); i++) {
      Node adjacency = list_graph[nearest_node.label][i];
      if(visited_vertices[adjacency.label]) {
        continue;
      }

      if(costs[nearest_node.label] + adjacency.weight < costs[adjacency.label]) {
        costs[adjacency.label] = costs[nearest_node.label] + adjacency.weight;
        adjacency_costs.push({adjacency.label, costs[adjacency.label]});
      }
    }
  }

  return costs;
}

int main() {
  int vertex_num;
  ListGraph list_graph;
  cin >> vertex_num;
  list_graph.resize(vertex_num);

  for(int i = 0; i < vertex_num; i++) {
    int label, degree;
    cin >> label >> degree;
    list_graph[i].resize(degree);

    for(int j = 0; j < degree; j++) {
      Node adjacency;
      cin >> adjacency.label >> adjacency.weight;

      list_graph[i][j] = adjacency;
    }
  }

  vector<int> costs = shortest_cost(list_graph, 0);

  for(int i = 0; i < costs.size(); i++) {
    cout << i << ' ' << costs[i] << endl;
  }
}

C++: #include <cstdio>
#include <iostream>
#include <queue>
#include <vector>
using namespace std;

const int N=10000;
const long INF=1000000000;

int main(){
	int n;
	vector<pair<int,long> > adj[N]; //????????????????????°???????????£??\???????????¨???
	
	//??\???
	scanf(" %d", &n);
	for(int i=0; i<n; ++i){
		int u, k;
		scanf(" %d %d", &u, &k);
		
		for(int j=0; j<k; ++j){
			int v;
			long c;
			scanf(" %d %ld", &v, &c);
			adj[u].push_back(make_pair(v,c)); //v??¨??£??\????????????????????¨??????????????????c
		} 	
	}
		
	//PriorityQueue?????¨??????Dijkstra???
	priority_queue<pair<long,int> > pq;
	
	int visit[N]={0};
	
	long cost[N];
	for(int i=0; i<N; ++i) cost[i]=INF;
	cost[0]=0; //?§?????????????????????§?§??????????	
	pq.push(make_pair(0, 0));
	visit[0]=-1; //?¨??????????
	
	while(!pq.empty()){
		pair<long,int> p=pq.top(); //pq??????????????§cost???????°?????????????????????????
		pq.pop();
		
		long u=p.second;
		visit[u]=-1; //????????????????¨???????????????????
		
		//????°??????¨???????????????????????§???????????°??????
		if(cost[u] < p.first*(-1)) continue;	
		
		//??£??\???????????????????????????
		for(int j=0; j<adj[u].size(); ++j){
			long v=adj[u][j].first; //u?????£??\????????????
			if(visit[v]==-1) continue;
			
			if(cost[v] > cost[u]+adj[u][j].second){
				cost[v] = cost[u]+adj[u][j].second;
				pq.push(make_pair(cost[v]*(-1), v));
				visit[v]=1;
			}
		}
		
	}
	
	for(int i=0; i<n; ++i)
		printf("%d %ld\n", i, (cost[i]==INF ? -1 : cost[i]));
}