oj.uz

Submission #676268

# Submission time Handle Problem Language Result Execution time Memory
676268 2022-12-30T03:22:09 Z Tangirkul Cijanobakterije (COCI21_cijanobakterije) C++17
70 / 70
 51 ms 11780 KB 
#include<bits/stdc++.h>
  
#define ll long long
#define fi first
#define se second
#define pb push_back
#define sz size
#define Junanna ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
  
using namespace std;
  
const ll K = 32;
const ll INF = 1e9 + 7;
const ll MOD = 1e9 + 7;
const ll N = (1e5 + 125);
 
ll n, m;
vector <ll> g[N];
bool used[N], used1[N];
pair <ll, ll> ans;

void dfs (ll v, ll d)
{
    if (d > ans.fi)
    {
        ans = {d, v};
    }
    used[v] = 1;
    for (ll i = 0; i < g[v].sz (); i++)
    {
        ll to = g[v][i];
        if (!used[to])
        {
            dfs (to, d + 1);
        }
    }
}

void dfss (ll v, ll d)
{
    if (d > ans.fi)
    {
        ans = {d, v};
    }
    used1[v] = 1;
    for (ll i = 0; i < g[v].sz (); i++)
    {
        ll to = g[v][i];
        if (!used1[to])
        {
            dfss (to, d + 1);
        }
    }
}

void ma1n ()
{
    cin >> n >> m;
    for (ll i = 1; i <= m; i++)
    {
        ll x, y;
        cin >> x >> y;
        g[x].pb (y);
        g[y].pb (x);
    }
    ll dis = 0;
    for (ll i = 1; i <= n; i++)
    {
        if (!used[i])
        {
            dfs (i, 1);
            ans.fi = 0;
            dfss (ans.se, 1);
            dis += ans.fi;
            ans = {0, 0};
        }
    }
    cout << dis;
}
    
int main ()
{
    Junanna;
    ll t = 1;
    while (t--)
    {
        ma1n ();
    }
    return 0;
}

Compilation message

Main.cpp: In function 'void dfs(long long int, long long int)':
Main.cpp:29:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for (ll i = 0; i < g[v].sz (); i++)
      |                    ~~^~~~~~~~~~~~
Main.cpp: In function 'void dfss(long long int, long long int)':
Main.cpp:46:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |     for (ll i = 0; i < g[v].sz (); i++)
      |                    ~~^~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 3456 KB Output is correct
2 Correct 15 ms 4272 KB Output is correct
3 Correct 19 ms 5176 KB Output is correct
4 Correct 39 ms 6016 KB Output is correct
5 Correct 32 ms 6904 KB Output is correct
6 Correct 51 ms 7756 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 11780 KB Output is correct
2 Correct 4 ms 3184 KB Output is correct
3 Correct 6 ms 3716 KB Output is correct
4 Correct 9 ms 4128 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 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 5 ms 3332 KB Output is correct
6 Correct 7 ms 3976 KB Output is correct
7 Correct 9 ms 4728 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 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2680 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 3 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 3456 KB Output is correct
2 Correct 15 ms 4272 KB Output is correct
3 Correct 19 ms 5176 KB Output is correct
4 Correct 39 ms 6016 KB Output is correct
5 Correct 32 ms 6904 KB Output is correct
6 Correct 51 ms 7756 KB Output is correct
7 Correct 27 ms 11780 KB Output is correct
8 Correct 4 ms 3184 KB Output is correct
9 Correct 6 ms 3716 KB Output is correct
10 Correct 9 ms 4128 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 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 5 ms 3332 KB Output is correct
16 Correct 7 ms 3976 KB Output is correct
17 Correct 9 ms 4728 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 1 ms 2644 KB Output is correct
21 Correct 2 ms 2680 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 3 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 51 ms 7636 KB Output is correct
30 Correct 8 ms 3924 KB Output is correct
31 Correct 22 ms 6724 KB Output is correct
32 Correct 16 ms 4836 KB Output is correct
33 Correct 35 ms 7352 KB Output is correct
34 Correct 23 ms 5560 KB Output is correct
35 Correct 26 ms 6964 KB Output is correct
36 Correct 30 ms 6124 KB Output is correct
37 Correct 36 ms 7344 KB Output is correct
38 Correct 36 ms 6804 KB Output is correct
39 Correct 25 ms 7044 KB Output is correct