poj1125floyd

#include <cstdio>
#include <iostream>
#include <algorithm>
#include <cstring>
#include <cmath>
#include <string>
#include <vector>
#include <map>
#include <queue>
#include <stack>
using namespace std;
const int inf=0x3f3f3f3f;
int d[105][105];
int main()
{
    //freopen("in","r",stdin);
    int n;
    while(cin>>n,n){
        for(int i=0;i<105;i++){
            for(int j=0;j<105;j++)
                d[i][j]=inf;
            d[i][i]=0;
        }
         int m,y,t;
         for(int i=1;i<=n;i++){
            cin>>m;
            for(int j=0;j<m;j++){
                cin>>y>>t;
                d[i][y]=t;
            }
         }
         for(int k=1;k<=n;k++)
            for(int i=1;i<=n;i++)
                if(d[i][k]!=inf) for(int j=1;j<=n;j++)
                    d[i][j]=min(d[i][j],d[i][k]+d[k][j]);
        int ans=inf,num;
        for(int i=1;i<=n;i++){
            int dd=0;
            for(int j=1;j<=n;j++)
                if(dd<d[i][j])
                    dd=d[i][j];
            if(ans>dd){
                ans=dd;
                num=i;
            }
        }
        if(ans==inf){
            cout<<"disjoint"<<endl;
            continue;
        }
        cout<<num<<" "<<ans<<endl;
    }
    return 0;
}