1 #include <iostream>
2
3 using namespace std;
4
5 int n, m;
6 int minn;
7 int u;
8 int dis[100010], book[100010], t1, t2, t3, e[10010][10010];
9
10 int main(){
11 cin >> n >> m;
12 for(int i = 1; i <= n; i++)
13 for(int j = 1; j <= n; j ++)
14 if(i == j) e[i][j] = 0;
15 else e[i][j] = 999999999;
16 for(int i = 1; i <= m; i ++){
17 cin >> t1 >> t2 >> t3;
18 e[t1][t2] = t3;
19 }
20 for(int i = 1; i <= n; i ++) dis[i] = e[1][i];
21 for(int i = 1; i <= n; i ++) book[i] = 0;
22 book[1] = 1;
23 for(int i = 1; i <= n; i ++){
24 minn = 999999999;
25 for(int j = 1; j <= n; j ++){
26 if(book[j] == 0 && dis[j] < minn){
27 minn = dis[j];
28 u = j;
29 }
30 }
31 book[u] = 1;
32 for(int j = 1; j <= n; j ++){
33 if(e[u][j] < 999999999){
34 if(dis[j] > dis[u] + e[u][j]) dis[j] = dis[u] + e[u][j];
35 }
36 }
37 }
38 for(int i = 1; i <= n; i ++) cout << dis[i];
39 return 0;
40 }
