Go: package main

import (
	"fmt"
	"container/heap"
)

type Node struct {
	Id int
	Dis int
}

type PriorityQueue []*Node

func (pq PriorityQueue) Len() int { return len(pq) }

func (pq PriorityQueue) Less(i, j int) bool {
	return pq[i].Dis < pq[j].Dis
}

func (pq PriorityQueue) Swap(i, j int) {
	pq[i], pq[j] = pq[j], pq[i]
}

func (pq *PriorityQueue) Push(x interface{}) {
	*pq = append(*pq, x.(*Node))
}

func (pq *PriorityQueue) Pop() interface{} {
	n := len(*pq)
	pop := (*pq)[n-1]
	*pq = (*pq)[0:n-1]
	return pop
}

func main() {
	var n int
	fmt.Scan(&n)

	g := make([][]int, n)
	c := make([][]int, n)
	pq := make(PriorityQueue, 0, n)
	d := make([]int, n)
	for i := 0; i < n; i++ {
		var u,k int
		fmt.Scan(&u)
		fmt.Scan(&k)
		g[u] = make([]int, k)
		c[u] = make([]int, k)
		for j := 0; j < k; j++ {
			fmt.Scan(&g[u][j])
			fmt.Scan(&c[u][j])
		}

		if u == 0 {
			d[u] = 0
		} else {
			d[u] = 1 << 30
		}
		pq.Push(&Node{u, d[u]})
	}
	heap.Init(&pq)

	for pq.Len() > 0 {
		node := heap.Pop(&pq).(*Node)
		for i := 0; i < len(g[node.Id]); i++ {
			nextId := g[node.Id][i]
			nextDis := node.Dis + c[node.Id][i]
			if nextDis < d[nextId] {
				d[nextId] = nextDis
				heap.Push(&pq, &Node{nextId, nextDis})
			}
		}
	}

	for i := 0; i < n; i++ {
		fmt.Println(i, d[i])
	}
}

C++: #include <iostream>
 using namespace std;
 static const int WHITE = 0;
 static const int GRAY = 1;
 static const int BLACK =2;
 static const int MAX = 100;
 static const int INFTY = (1<<21);
 
 int n,M[MAX][MAX];
 
 void dijks(){
 	int minv;
 	int d[MAX],p[MAX];
 	int color[MAX];
 	for(int i=0;i<n;i++){
 		d[i] = INFTY;
 		color[i] = WHITE;
 	}
 	
 	d[0] = 0;
 	color[0] = GRAY;
 	while(1){
 		minv = INFTY;
 		int u=-1;
 		for(int i=0;i<n;i++){
 			if(color[i]!=BLACK&&d[i]<INFTY){
 				minv = d[i];
 				u=i;
 			}
 		}
 		
 		if(u==-1) break;
 		
 		color[u] = BLACK;
 		
 		for(int v=0;v<n;v++){
 			if(color[v]!=BLACK&&M[u][v]<INFTY){
 				if(d[v]>d[u]+M[u][v]){
 					d[v] = d[u]+M[u][v];
 					color[v] = GRAY;
 				}
 			}
 		}
 	}
 	
 	for(int i=0;i<n;i++){
 		cout<<i<<" "<<(d[i]==INFTY?-1:d[i]);
 	}
 }
 
 int main(){
 	cin>>n;
 	
 	for(int i=0;i<n;i++){
 		for(int j=0;j<n;j++){
 			M[i][j] = INFTY;
 		}
 	}
 	
 	int k,u,c,v;
 	for(int i=0;i<n;i++){
 		cin>>u>>k;
 		for(int j=0;j<k;j++){
 			cin>>c>>v;
 			M[u][c] = v;
 		}
 	}
 	dijks();
 	return 0;
 }

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

struct Edge {int to, cost;};

typedef vector<Edge> Edges;
typedef vector<Edges> Graph;

int mind(vector<int> &a,vector<int> &b){
	int n=a.size();
	int min=INT_MAX;
	int ind=0;
	for (int i=0;i<n;i++){
		if((min>a[i])&&(b[i]==0)){
			min=a[i];
			ind=i;
		}
	}
	if(min==INT_MAX){
		return -1;
	}else{
		return ind;
	}
}

int min(vector<int> &a){
	int n=a.size();
	int min=a[0];
	int ind=0;
	for (int i=0;i<n;i++){
		if(min>a[i]){
			min=a[i];
			ind=i;
		}
	}
	return min;
}

void dijkstra(Graph &G,vector<int> &d,int n,int s){
	fill(d.begin(),d.end(),INT_MAX);
	vector<int> c(n,0);
	int t;
	
	d[s]=0;
	
	while((t=mind(d,c))!=-1){
		c[t]=1;
		for(int i=0;i<G[t].size();i++){
			Edge e=G[t][i];
			if(d[e.to] > d[t]+e.cost){
				d[e.to] = d[t]+e.cost;
			}
		}
	}
}

int main(){
	int n,i,j,k;
	vector<int> d(n);
	Edge e;
	
	cin >> n;
	
	Graph G(n);
	
	for (i=0;i<n;i++){
		cin >> k >> k;
		for (j=0;j<k;j++){
			cin >> e.to >> e.cost;
			G[i].push_back(e);
		}
	}
	
	dijkstra(G,d,n,0);
	
	for (i=0;i<n;i++){
		cout << i << " " << d[i] << endl;
	}
	
	return 0;
}