Go: package main

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

const (
	white int = iota
	gray
	black
)

type node struct {
	id     int
	parent int
	edge   []int
	weight []int
	color  int
}

type graph struct {
	nodes    []node
	distance []int
}

var infty = 1 << 32
var null = -1

func constructgraph() *graph {
	sc := bufio.NewScanner(os.Stdin)
	sc.Split(bufio.ScanWords)
	n := nextInt(sc)

	g := &graph{make([]node, n), make([]int, n)}

	for i := 0; i < n; i++ {
		id := nextInt(sc)
		edges := nextInt(sc)
		n := node{}
		n.id = id
		n.edge = make([]int, edges)
		n.weight = make([]int, edges)
		n.color = white
		for j := 0; j < edges; j++ {
			to := nextInt(sc)
			w := nextInt(sc)
			n.edge[j] = to
			n.weight[j] = w
		}
		g.nodes[id] = n
	}
	return g
}

func nextInt(sc *bufio.Scanner) int {
	sc.Scan()
	v, _ := strconv.Atoi(sc.Text())
	return v
}

func (g *graph) preparedijkstra(s int) {
	for i := 0; i < len(g.nodes); i++ {
		g.nodes[i].color = white
		g.nodes[i].parent = null
		g.distance[i] = infty
	}
	g.distance[s] = 0
}

func (g *graph) dijkstra(s int) []int {
	g.preparedijkstra(s)

	for {
		var u int
		mincost := infty
		for i, d := range g.distance {
			if g.nodes[i].color != black && mincost > d {
				mincost = d
				u = i
			}
		}

		if mincost == infty {
			break
		}

		g.nodes[u].color = black

		for i, e := range g.nodes[u].edge {
			if g.nodes[e].color != black {
				if g.distance[e] > g.distance[u]+g.nodes[u].weight[i] {
					g.distance[e] = g.distance[u] + g.nodes[u].weight[i]
					g.nodes[e].parent = u
					g.nodes[e].color = gray
				}
			}
		}
	}
	return g.distance
}

func printShortestPath(d []int) {
	for i, v := range d {
		fmt.Printf("%d %d\n", i, v)
	}
}

func main() {
	g := constructgraph()
	d := g.dijkstra(0)
	printShortestPath(d)
}

C++: aa

C++: #include<iostream>
#include<vector>
#include<algorithm>
#define MAX_V 100
#define INF 1e9
using namespace std;
int cost[MAX_V][MAX_V];
int d[MAX_V];
bool used[MAX_V];
int V;
void dijkstra(int s)
{
	for (int i = 0; i < MAX_V; i++)

	{
		d[i] = INF;
		used[i] = false;
	}
	d[s] = 0;

	while (true)
	{
		int v = -1;
		for (int u = 0; u < V; u++)
		{
			if (!used[u] && (v == -1 || d[u] < d[v]))
			{
				v = u;
			}
		}
		if (v == -1)
		{
			break;
		}
		used[v] = true;

		for (int u = 0; u < V; u++)
		{
			d[u] = min(d[u], d[v] + cost[v][u]);
		}


	}
}
int main()
{
	for (int i = 0; i < V; i++)
	{
		int u;
		cin >> u;
		int k;
		cin >>  k;
		for (int j = 0; j < k; j++)

		{
			int v;
			cin >> v;
			int c;
			cin >> c;
			cost[u][v] = c;

		}
	}

	dijkstra(0);

	for (int i = 0; i < V; i++)
	{
		cout << i << " " <<d[i]<< endl;
	}
	return 0;

}

C++: #include<iostream>
#include<vector>
#include<algorithm>
#include<queue>
#define N 100000
const int INF = 1 << 30; // > 10^9
int n;
using namespace std;
struct edge : vector<pair<int, int> > {
    void add_edge(int to, int cost) {
        push_back(pair<int, int>(to, cost));
    }
} info[N];
void bfs();
int hoge[N];
int main() {
    cin >> n;
    for (int i = 0; i < n; i++) {
        int u, k;
        cin >> u >> k;
        while (k--) {
            int v, c;
            cin >> v >> c;
            info[u].add_edge(v, c);
        }
    }
    bfs();
    for (int i = 0; i < n; i++) {
        cout << i << " " << hoge[i] << endl;
    }
}
void bfs() {
    fill_n(hoge, n, INF); //hoge ~ hoge + v <- INF
    queue<int> que;
    que.push(0);
    hoge[0] = 0;
    while (!que.empty()) {
        int p = que.front();
        que.pop();
        for (int i = 0; i < info[p].size(); i++) {
            if (info[p][i].second + hoge[p] < hoge[info[p][i].first]) {
                que.push(info[p][i].first);
                hoge[info[p][i].first] = info[p][i].second + hoge[p];
            }
        }
    }
    
}

C++: #include <stdio.h>
#include <vector>
#include <utility>
#define rep(i, n) for(int i = 0; i < n; ++i)
using namespace std;

int main(void) {
  int n, ans = 0;
  scanf("%d", &n);
  int dis[n];
  rep(i, n) dis[i] = 10e7;
  dis[0] = 0;
  vector< pair<int, int> > vec[n];
  rep(i, n) {
    int u, k;
    scanf("%d%d", &u, &k);
    rep(j, k) {
      int c, v;
      scanf("%d%d", &v, &c);
      pair<int, int> p = make_pair(v, c);
      vec[u].push_back(p);
    }
  }
  /*rep(i, n) {
    vector< pair<int, int> >::iterator it;
    for(it = vec[i].begin(); it != vec[i].end(); ++it) printf("%d:%d ", (*it).first, (*it).second);
    printf("\n");
  }*/
  rep(i, n - 1) {
    rep(j, n) {
      vector< pair<int, int> >::iterator it;
      for(it = vec[j].begin(); it != vec[j].end(); ++it) {
        if(dis[(*it).first] > dis[j] + (*it).second) dis[(*it).first] = dis[j] + (*it).second;
      }
    }
    /*rep(j, n) printf("%d ", dis[j]);
    printf("\n");*/
  }
  rep(i, n) printf("%d %d\n", i, dis[i]);
  return 0;
}

C++: #include <iostream>
#include <stdio.h>
#include <vector>

#define inf 500000
using namespace std;

int main() {
    int n, tmp, tweight, kazu;
    int g[100][100] = {};//与えられるグラフ
    cin >> n;

    //初期化
    int d[100] = {};
    for (int i = 1; i < n; ++i) {
        d[i] = inf;
    }
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            g[i][j] = -1;
        }
    }
    for (int i = 0; i < n; ++i) {
        g[i][i] = 0;
    }

    //入力を受け取る
    for (int i = 0; i < n; ++i) {
        cin >> tmp;
        cin >> kazu;
        for (int j = 0; j < kazu; ++j) {
            cin >> tmp >> tweight;
            g[i][tmp] = tweight;
        }
    }
    /*
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            cout << g[i][j] << " ";
        }
        cout << endl;
    }
     */

    for (int k = 0; k < n; ++k) {

        for (int i = 0; i < n; ++i) { // i 今最短経路を求めているノード
            /*
            for (int l = 0; l < n; ++l) {
                cout << d[i] << " ";
            }
            cout << endl;
             */
            for (int j = 0; j < n; ++j) { // j k の組でその２点間の重み
                //cout << i << " " << d[i] << " " << d[j] << " " << g[j][i] << endl;
                if (d[i] > d[j] + g[j][i] && g[j][i] != -1) {
                    d[i] = d[j] + g[j][i];

                }
            }
        }

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

    return 0;
}

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

using namespace std;
using graph = vector<vector<int>>;


int main() {
    int n;
    cin >> n;

    graph G(n, vector<int>(n, -1));
    for (int i = 0; i < n; ++i) {
        int u, k;
        cin >> u >> k;

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

    // Dijkstra's algorithm
    vector<int> d(n, -1);
    vector<bool> visited(n, false);

    d[0] = 0;
    visited[0] = true;
    while (1) {
        int u = -1;
        int v = -1;
        int minw = numeric_limits<int>::max();
        for (int i = 0; i < n; ++i) {
            if (!visited[i])
                continue;
            for (int j = 0; j < n; ++j) {
                if (G[i][j] < 0)
                    continue;
                int w = G[i][j] + d[i];
                if (!visited[j] && w < minw) {
                    u = i;
                    v = j;
                    minw = w;
                }
            }
        }
        if (v < 0) {
            break;
        }
        d[v] = minw;
        visited[v] = true;
    }

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

    return 0;
}