Submission #1120042

#	Time	Username	Problem	Language	Result	Execution time	Memory
1120042		Insert_Username_Here	Bitaro’s Party (JOI18_bitaro)	C++14	14 / 100	56 ms	9348 KiB

bitaro

#include <bits/stdc++.h>
#define f first
#define s second
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
// const ll mod = 1e9 + 7;
// #include <brawlstars>
// FOR PAIN OR FOR GLORYYY ELLL PRIMOOOOOO

const int N = 1e5 + 1;
vector<int> adj[N];
int vis[N], dis[N];

signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n, m, q;
	cin >> n >> m >> q;
	if(q > 1) {
		for(int i = 0; i < q; i++) cout << "-1\n";
		return 0;
	}
	int u, v;
	for(int i = 0; i < m; i++) {
		cin >> u >> v;
		u--, v--;
		adj[v].push_back(u);
	}
	cin >> u >> q;
	for(int i = 0; i < q; i++) {
		cin >> v;
		vis[v - 1] = 1;
	}
	for(int i = 0; i < n; i++) dis[i] = -1;
	dis[u - 1] = 0;
	for(int i = n - 1; i >= 0; i--) {
		if(dis[i] < 0) continue;
		for(int j : adj[i]) dis[j] = max(dis[j], dis[i] + 1);
	}
	v = -1;
	for(int i = 0; i < n; i++) {
		if(!vis[i]) v = max(v, dis[i]);
	}
	cout << v << "\n";
}

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