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Submission #948851

# Submission time Handle Problem Language Result Execution time Memory
948851 2024-03-18T15:32:29 Z vin Cijanobakterije (COCI21_cijanobakterije) C++17
0 / 70
 21 ms 11096 KB 
#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define mp make_pair
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>

const int INF = 2147483645;
const int maxN = (int)1e5+5;
const ll LLINF = LLONG_MAX;
//const ll mod = 998244353;
const ll mod = 1000000007;

vector<int> adj[maxN];
int dist[maxN];
bool vis[maxN], bck[maxN];

void dfs(int s) {
	for (auto i: adj[s]) {
		if (vis[i]) continue;
		vis[i] = true;
		dist[i] = dist[s]+1;
		dfs(i);
	}
}

void solv() {
	int n, m, a, b, mx=0;
	cin>>n>>m;
	for (int i=0;i<m;i++) {
		cin>>a>>b;
		bck[b] = true;
		adj[a].pb(b);
	}
	for (int i=1;i<=n;i++) {
		if (!bck[i]) {
			dfs(i);
		}
	}
	for (int i=1;i<=n;i++) {
		mx = max(mx, dist[i]);
	}
	cout<<mx+1<<'\n';
}

int main() {
    ios::sync_with_stdio(0); cin.tie(0);
    int t=1;
//    cin>>t;
    while (t--) solv();
}

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 3672 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 21 ms 11096 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 3160 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 3164 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 3672 KB Output isn't correct
2 Halted 0 ms 0 KB -