Go: package main

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

const (
	MAX_N      = 100
	MAX_WEIGHT = 100000
)

type Edge struct {
	start  int
	end    int
	weight int
}

type ShortestInfo struct {
	edges    []Edge
	shortest int
}

func main() {
	sc := bufio.NewScanner(os.Stdin)
	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{1}, shortestList, adjacentMatrix)
	for _, v := range shortestList {
		fmt.Printf("%d %d\n", v.getEnd()-1, v.shortest)
	}
}

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

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-1] = shortestInfo
}

func findAdjacents(currentNode int, adjacentMatrix [][]int) []Edge {
	adjacents := adjacentMatrix[currentNode-1]
	edges := []Edge{}
	for i, v := range adjacents {
		if v > 0 {
			edges = append(edges, Edge{start: currentNode, end: i + 1, weight: v})
		}
	}
	return edges
}

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

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

#define INF 1000000

int n;
int cost[110][110], d[110];
bool used[110];

void dijkstra(int s){

  //initialization
  for(int i = 0;i < n;i++) d[i] = INF;
  for(int i = 0;i < n;i++) used[i] = false;

  //distance of starting position is 0
  d[s] = 0;
  
  while(true){
    int v = -1;
    
    for(int u = 0;u < n;u++){
      if(!used[u] && (v == -1 || d[u] < d[v])) v = u;
    }
    
    if(v == -1) break; //finish
    used[v] = true; //use v

    //update distance
    for(int u = 0;u < n;u++){
      d[u] = min(d[u], d[v] + cost[v][u]);
    }
  }
}

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

  //input and initialization
  cin >> n;
  for(int i = 0;i < n;i++){
    for(int j = 0;j < n;j++){
      cost[i][j] = INF;
    }
  }
  for(int i = 0;i < n;i++){
    cin >> u >> k;
    for(int j = 0;j < k;j++){
      cin >> v >> c;
      cost[u][v] = min(cost[u][v], c);
    }
  }
  
  dijkstra(0);

  //output
  for(int i = 0;i < n;i++) cout << i << " " << d[i] << endl;
  
  return 0;
}

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

static const int MAX = 100;
static const int INFTY = (1<<21);
static const int WHITE = 0;
static const int GRAY = 1;
static const int BLACK = 2;

int n, M[MAX][MAX];

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

  d[0] = 0;
  color[0] = GRAY;
  while (true) {
    minv = INFTY;
    int u = -1;
    for (int i = 0; i < n; i ++) {
      if (minv > d[i] && color[i] != BLACK) {
        u = i;
        minv = d[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]) << endl;
  }
}

int main() {
  cin >> n;
  for (int i = 0; i < n; i ++) {
    for (int j = 0; j < n; j ++) M[i][j] = INFTY;
  }

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

  dijkstra();

  return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
#define MAX 100

int n;
long d[MAX], C[MAX][MAX];
vector<int> M[MAX];

struct Edge{
    int u;
    Edge(int u): u(u){}
    bool operator < (const Edge &e) const {
        if(d[u] != d[e.u]) return d[u] < d[e.u];
        else return u < e.u;
    }
};

void dijkstra(){
    bool seen[n], todo[n];
    list<Edge> E;
    fill(seen, seen + n, false);
    fill(todo, todo + n, false);
    seen[0] = true;
    E.push_front(Edge(0));
    
    while(!E.empty()){
        E.sort();
        int u = E.begin()->u;
        seen[u] = true;
        E.pop_front();
        vector<int>::iterator it;
        
        for(it = M[u].begin(); it != M[u].end(); it++){
            int v = *it;
            if(!seen[v]) d[v] = min(d[v], d[u] + C[u][v]);
            if(!seen[v] && !todo[v]){
                E.push_back(Edge(v));
                todo[v] = true;
            }
        }
    }
    return;
}

int main(){
    cin >> n;
    fill(d, d + n, LONG_MAX);
    d[0] = 0;
    for(int i = 0; i < n; i++){
        fill(C[i], C[i] + n, LONG_MAX);
        int u, q, v, cost;
        cin >> u >> q;
        for(int j = 0; j < q; j++){
            cin >> v >> cost;
            C[u][v] = cost;
            M[u].push_back(v);
        }
    }
    dijkstra();
    for(int i = 0; i < n; i++)
        cout << i << " " << d[i] << endl;
    return 0;
}

C++: #include<iostream>
#define INF 1e9
using namespace std;

int n,mp[101][101],D[101];
void dijkstra(){
  bool used[101]={};
  for(int i=0;i<101;i++)D[i]=INF;
  D[0]=0;
 
  while(1){
    int cost=INF,pos=-1;
    for(int i=0;i<n;i++) if(!used[i]&&D[i]<cost) pos=i,cost=D[i];//もし使用していなくて格納されているものよりコストが大きれればpositionをずらし、コストに今入っているDを入れる
    if(pos==-1)return ;
    used[pos]=1;//positionをずらしたら見たことになるので１に書き換える    
    for(int i=0;i<n;i++)D[i]=min(D[i],cost+mp[pos][i]);
  }
}

int main(){
     cin>>n;
  for(int i=0;i<101;i++)
    for(int j=0;j<101;j++) mp[i][j]=INF;
   
  for(int i=0,a,m;i<n;i++){
    cin>>a>>m;//aが頂点mが次数
    for(int j=0,b,c;j<m;j++)cin>>b>>c,mp[a][b]=c;
  }
  dijkstra();
  for(int i=0;i<n;i++)cout <<i<<" "<<D[i]<<endl;
   
  return 0;
}