Submission #1089480

#	Time	Username	Problem	Language	Result	Execution time	Memory
1089480		coldbr3w	Bitaro’s Party (JOI18_bitaro)	C++17	14 / 100	2059 ms	14940 KiB

bitaro

#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define pll pair<long long, long long>
#define pb push_back
#define F first
#define S second  
#define all(x) (x).begin(), (x).end()

const ll N = 3e5 + 100;
const ll inf = 1e18;
const ll mod = 1e9 + 7;
const ll block = 350;
ll n,m,q;
vector<ll>adj[N];
ll dp[N];
void to_thic_cau(){
	cin >> n >> m >> q;
	for(int i = 1; i <= m;i++){
		ll u,v; cin >> u >> v;
		adj[v].pb(u);
	}
	while(q--){
		ll t, sz; cin >> t >> sz;
		for(int i = 1; i <= n;i++) dp[i] = 0;
		for(int i = 1; i <= sz;i++){
			ll x; cin >> x;
			dp[x] = -inf;
		}
		for(int i = 1; i <= n;i++) for(auto j : adj[i]) dp[i] = max(dp[i], dp[j] + 1);
		cout << (dp[t] < 0 ? -1 : dp[t]) << '\n';	
	}
}
 
signed main()   
{ 
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	ll tc = 1;
	//cin >> tc;
	while(tc--) to_thic_cau();
}

• Subtask 1: 7 / 7
• Subtask 2: 7 / 7
• Subtask 3: 0 / 86