oj.uz

Submission #666282

# Submission time Handle Problem Language Result Execution time Memory
666282 2022-11-28T05:46:56 Z Chal1shkan Cijanobakterije (COCI21_cijanobakterije) C++14
70 / 70
 41 ms 12108 KB 
# include <bits/stdc++.h>

# define pb push_back
# define ff first
# define ss second
# define nl "\n"
# define pii pair <int, int>
# define pll pair <ll, ll>
  
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
  
const ll maxn = 1e5 + 125;
const ll maxl = 20 + 0;
const ll inf = 2e9 + 0;
const ll mod = 998244353;

using namespace std;

ll n, m, vv, uu, cur;
vector <ll> g[maxn];
bool used[maxn];

void dfs (ll v, ll pa, ll d, bool tp)
{
	if (d >= cur)
	{
		cur = d;
		if (!tp)
			vv = v;
		else
			uu = v;
	}
	used[v] = 1;
	for (ll to : g[v])
	{
		if (to != pa)
		{
			dfs(to, v, d + 1, tp);
		}
	}
}



void ma1n ()
{
	cin >> n >> m;
	for (ll i = 1, u, v; i <= m; ++i)
	{
		cin >> u >> v;
		g[u].pb(v);
		g[v].pb(u);
	}
	ll ans = 0;
	for (ll i = 1; i <= n; ++i)
	{
		if (!used[i])
		{
			cur = 0;
			dfs(i, i, 1, 0);
			cur = 0;
			dfs(vv, vv, 1, 1);
			ans += cur;
		//	cout << vv << ' ' << uu << nl;
		}
	}
	cout << ans << nl;
}
    
int main ()
{
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    int ttt = 1;
//  cin >> ttt;
    for (int test = 1; test <= ttt; test++)
    {
//      cout << "Case " << test << ":" << nl;
        ma1n();
    }
    return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 3284 KB Output is correct
2 Correct 11 ms 3960 KB Output is correct
3 Correct 17 ms 4564 KB Output is correct
4 Correct 21 ms 5152 KB Output is correct
5 Correct 30 ms 5868 KB Output is correct
6 Correct 40 ms 6492 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 12108 KB Output is correct
2 Correct 4 ms 3028 KB Output is correct
3 Correct 9 ms 3464 KB Output is correct
4 Correct 7 ms 3796 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 4 ms 3156 KB Output is correct
6 Correct 8 ms 3748 KB Output is correct
7 Correct 11 ms 4320 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 3 ms 2644 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 3284 KB Output is correct
2 Correct 11 ms 3960 KB Output is correct
3 Correct 17 ms 4564 KB Output is correct
4 Correct 21 ms 5152 KB Output is correct
5 Correct 30 ms 5868 KB Output is correct
6 Correct 40 ms 6492 KB Output is correct
7 Correct 27 ms 12108 KB Output is correct
8 Correct 4 ms 3028 KB Output is correct
9 Correct 9 ms 3464 KB Output is correct
10 Correct 7 ms 3796 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 1 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 4 ms 3156 KB Output is correct
16 Correct 8 ms 3748 KB Output is correct
17 Correct 11 ms 4320 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 1 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 2 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 3 ms 2644 KB Output is correct
29 Correct 41 ms 6492 KB Output is correct
30 Correct 9 ms 3540 KB Output is correct
31 Correct 24 ms 5808 KB Output is correct
32 Correct 18 ms 4384 KB Output is correct
33 Correct 28 ms 6168 KB Output is correct
34 Correct 20 ms 4820 KB Output is correct
35 Correct 24 ms 5972 KB Output is correct
36 Correct 25 ms 5364 KB Output is correct
37 Correct 30 ms 6228 KB Output is correct
38 Correct 39 ms 5836 KB Output is correct
39 Correct 26 ms 6044 KB Output is correct