膜拜膜拜 70分大佬
by outstanding_c @ 2018-10-07 12:59:09
```
#include<iostream>
using namespace std;
int n,m,a[1001][1001],r[10001],ans=0,book[1001][1001];
int main(){
cin>>m>>n;
for(int i=1;i<=m;i++)r[i]=1;
for(int i=1;i<=n;i++){
cin>>a[i][0];
for(int j=1;j<=a[i][0];j++){
cin>>a[i][j];
book[i][a[i][j]]=1;
}
}
while(1){
bool fl=1;
for(int i=1;i<=n;i++){
int maxx=0;
for(int j=a[i][1];j<=a[i][a[i][0]];j++){
if(book[i][j])continue;
if(r[j]>maxx){
maxx=r[j];
}
}
for(int j=1;j<=a[i][0];j++){
if(r[a[i][j]]<=maxx){
r[a[i][j]]=maxx+1;
fl=0;
}
}
}
if(fl)break;
}
int ans=1;
for(int i=1;i<=m;i++){
if(r[i]>ans)ans=r[i];
}
cout<<ans;
return 0;
}
```
by outstanding_c @ 2018-10-07 13:01:52
ac了
by outstanding_c @ 2018-10-07 13:05:27
（上 答 作 废）
by 蒻得不行 @ 2018-10-17 13:58:46