#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,v.size()) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<(x.F)<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first
const int N=505;
int n,k,ans,a[N],deg[N],dp[N][N],pd[N][N];
vector<int> vec,g[N];
void calcdp(int u,int x){
for(auto v : g[u]){
int dist=(v-u+n)%n;
if(dist<=x){
maxm(dp[u][x],dp[v][x-dist]+1);
maxm(dp[u][x],pd[v][dist-1]+1);
}
}
maxm(ans,dp[u][x]+(k==1 && deg[u]));
//cout<<"dp "<<u<<" "<<x<<" -> "<<dp[u][x]<<endl;
}
void calcpd(int u,int x){
for(auto v : g[u]){
int dist=(u-v+n)%n;
if(dist<=x){
maxm(pd[u][x],pd[v][x-dist]+1);
maxm(pd[u][x],dp[v][dist-1]+1);
}
}
maxm(ans,pd[u][x]+(k==1 && deg[u]));
//cout<<"pd "<<u<<" "<<x<<" -> "<<pd[u][x]<<endl;
}
int main(){
ios:: sync_with_stdio(0), cin.tie(0), cout.tie(0);
cin>>n>>k;
f(i,0,n){
int x;
cin>>x;
while(x>0){
deg[x-1]=1;
g[i].pb(x-1);
cin>>x;
}
}
f(t,1,n){
f(i,0,n){
calcdp(i,t);
calcpd(i,t);
}
}
int res=0;
if(k==0){
f(i,0,n) if(dp[i][n-1]==ans || pd[i][n-1]==ans) res=i+1;
}
else{
f(i,0,n){
if(dp[i][n-1]+(deg[i]>0)==ans || pd[i][n-1]+(deg[i]>0)==ans){
if(deg[i]==0){
res=i+1;
}
else{
f(j,0,n){
for(auto v : g[j]){
if(v==i){
res=j+1;
}
}
}
}
break;
}
}
}
if(k==1) assert(0);
cout<<ans<<endl<<res;
}
/*
7 1
5 0
5 0
7 0
3 0
4 0
4 3 0
2 1 0
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
332 KB |
Output is correct |
| 2 |
Runtime error |
1 ms |
588 KB |
Execution killed with signal 6 |
| 3 |
Runtime error |
1 ms |
716 KB |
Execution killed with signal 6 |
| 4 |
Runtime error |
2 ms |
844 KB |
Execution killed with signal 6 |
| 5 |
Correct |
1 ms |
460 KB |
Output is correct |
| 6 |
Runtime error |
3 ms |
964 KB |
Execution killed with signal 6 |
| 7 |
Correct |
4 ms |
716 KB |
Output is correct |
| 8 |
Runtime error |
2 ms |
1100 KB |
Execution killed with signal 6 |
| 9 |
Correct |
5 ms |
708 KB |
Output is correct |
| 10 |
Correct |
12 ms |
716 KB |
Output is correct |
| 11 |
Correct |
5 ms |
744 KB |
Output is correct |
| 12 |
Runtime error |
17 ms |
2124 KB |
Execution killed with signal 6 |
| 13 |
Runtime error |
30 ms |
2960 KB |
Execution killed with signal 6 |
| 14 |
Correct |
47 ms |
1868 KB |
Output is correct |
| 15 |
Runtime error |
161 ms |
4736 KB |
Execution killed with signal 6 |
| 16 |
Runtime error |
268 ms |
4976 KB |
Execution killed with signal 6 |
| 17 |
Runtime error |
164 ms |
4736 KB |
Execution killed with signal 6 |
| 18 |
Correct |
64 ms |
2320 KB |
Output is correct |
| 19 |
Runtime error |
274 ms |
4992 KB |
Execution killed with signal 6 |
| 20 |
Runtime error |
260 ms |
4932 KB |
Execution killed with signal 6 |
