zoj1082 Stockbroker Grapevine

1. //zoj1082 Stockbroker Grapevine
2. //Accepted 1082 C++ 00:00.00 472K
3. #include <stdio.h>
4. #define MAXN 100
5. #define INF 100000000
6. typedef int elem;
7. int n;
8. void floyd(int n,elem m[][MAXN],elem a[][MAXN])
9. {
10.        int i,j,k;
11.        for (i=0; i<n; ++i)
12.               for (j=0; j<n; ++j)
13.                      a[i][j] = m[i][j];
14.        for (k=0; k<n; ++k)
15.               for (i=0; i<n; ++i)
16.                      for (j=0; j<n; ++j)
17.                             if (a[i][j] > a[i][k]+a[k][j])
18.                                    a[i][j] = a[i][k]+a[k][j];
19. }
20. void solve()
21. {
22.        int i,j;
23.        elem m[MAXN][MAXN],a[MAXN][MAXN];
24.        for (i=0; i<n; ++i)
25.               for (j=0; j<n; ++j)
26.                      if (i == j) m[i][j] = 0;
27.                      else m[i][j] = INF;
28.        for (i=0; i<n; ++i) {
29.               int pair;
30.               scanf ("%d",&pair);
31.               for (j=0; j<pair; ++j) {
32.                      int d,time;
33.                      scanf ("%d %d",&d,&time);
34.                      m[i][d-1] = time;
35.               }
36.        }
37.        floyd(n,m,a);
38.        int max, min=INF, md;
39.        for (i=0; i<n; ++i) {
40.               max = 0;
41.               for (j=0; j<n; ++j)
42.                      if (a[i][j] > max)
43.                             max = a[i][j];
44.               if (max < min) {
45.                      min = max;
46.                      md = i+1;
47.               }
48.        }
49.        printf ("%d %d/n",md,min);
50. }
51. int main()
52. {
53. #ifndef ONLINE_JUDGE
54.        freopen("1082.txt","r",stdin);
55. #endif
56.        while (scanf ("%d",&n) != EOF && n)
57.               solve();
58. #ifndef ONLINE_JUDGE
59.        fclose(stdin);
60. #endif
61.        return 0;
62. }
63.