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1125.cpp
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#include<iostream>
using namespace std;
int a[110][110]={0},mem[110]={0},mem1[110]={0},time1[110][110]={0},tmax,p;
void checkall(int i)
{
int j;
for(j=1;j<=p;j++)
if(a[i][j]>0&&mem1[j]==0)
{
mem1[j]=1;
checkall(j);
}
}
void delandnew(int i)
{
int j,k,n;
mem[i]=1;
for(j=1;j<=p;j++)
{
time1[j][i]=-1;
if(a[i][j]>0&&time1[i][j]!=-1)time1[i][j]=a[i][j];
}
}
void passtime()
{
int i,j,k,rei[12000]={0},s=0;
tmax++;
for(i=1;i<=p;i++)
for(j=1;j<=p;j++)
{
if(time1[i][j]==1)
{
s++;
rei[s]=j;
}
if(time1[i][j]>0)time1[i][j]--;
}
for(i=1;i<=s;i++)
delandnew(rei[i]);
for(i=1;i<=p;i++)
if(mem[i]==0)
{
j=0;
break;
}
if(j==0)passtime();
}
int main()
{
int i,j,k,c,n,m,tmin[110],t,s;
while(cin>>p&&p!=0)
{
for(i=0;i<=p+1;i++)
{
mem[i]=tmin[i]=0;
for(j=0;j<=p+1;j++)
a[i][j]=time1[i][j]=0;
}
for(i=1;i<=p;i++)
{
cin>>c;
for(j=1;j<=c;j++)
{
cin>>k;
cin>>a[i][k];
}
}
for(i=1;i<=p;i++)
{
for(j=0;j<=p+1;j++)
mem[j]=mem1[j]=0;
s=0;
mem[i]=mem1[i]=1;
checkall(i);
for(j=1;j<=p;j++)
if(mem1[j]==0)
{
s=1;
break;
}
if(s==1)continue;
tmax=0;
for(j=0;j<=p+1;j++)
for(k=0;k<=p+1;k++)
time1[j][k]=0;
delandnew(i);
passtime();
tmin[i]=tmax;
}
k=0;
t=2147481647;
for(i=1;i<=p;i++)
if(tmin[i]<t&&tmin[i]>0)
{
k=i;
t=tmin[i];
}
if(k==0)cout<<"disjoint\n";
else cout<<k<<' '<<t<<endl;
}
return 0;
}