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Submission #872492

# Submission time Handle Problem Language Result Execution time Memory
872492 2023-11-13T08:09:39 Z HossamHero7 Cijanobakterije (COCI21_cijanobakterije) C++14
70 / 70
 32 ms 8344 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define endl '\n'
const int N = 1e5+5;
vector<int> adj[N];
int dep[N];
int dep2[N];
int vis[N];
int bfs(int src){
    vis[src] = 1;
    queue<int> q;
    q.push(src);
    pair<int,int> mxDep {0,src};
    while(q.size()){
        int node = q.front();       q.pop();
        for(auto ch : adj[node]){
            if(vis[ch]) continue;
            q.push(ch);
            vis[ch] = 1;
            dep[ch] = dep[node] + 1;
            mxDep = max(mxDep,{dep[ch],ch});
        }
    }
    q.push(mxDep.second);
    vis[mxDep.second] = 2;
    int ret = 1;
    while(q.size()){
        int node = q.front();       q.pop();
        for(auto ch : adj[node]){
            if(vis[ch] == 2) continue;
            q.push(ch);
            vis[ch] = 2;
            dep2[ch] = dep2[node] + 1;
            ret = max(ret , dep2[ch] + 1);
        }
    }
    return ret;
}
void solve(){
    int n,m;
    cin>>n>>m;
    for(int i=0;i<m;i++){
        int a,b;
        cin>>a>>b;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    int ans = 0;
    for(int i=1;i<=n;i++){
        if(vis[i]) continue;
        ans += bfs(i);
    }
    cout<<ans<<endl;
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);      cout.tie(0);
    int t=1;
    //cin>>t;
    while(t--){
        solve();
    }
    return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4444 KB Output is correct
2 Correct 10 ms 5212 KB Output is correct
3 Correct 14 ms 6144 KB Output is correct
4 Correct 19 ms 6748 KB Output is correct
5 Correct 21 ms 7508 KB Output is correct
6 Correct 26 ms 8284 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 8020 KB Output is correct
2 Correct 3 ms 4188 KB Output is correct
3 Correct 5 ms 4836 KB Output is correct
4 Correct 7 ms 5212 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 3676 KB Output is correct
2 Correct 1 ms 3804 KB Output is correct
3 Correct 1 ms 3672 KB Output is correct
4 Correct 1 ms 3676 KB Output is correct
5 Correct 3 ms 4420 KB Output is correct
6 Correct 6 ms 5288 KB Output is correct
7 Correct 8 ms 5956 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 3676 KB Output is correct
2 Correct 1 ms 3676 KB Output is correct
3 Correct 1 ms 3676 KB Output is correct
4 Correct 1 ms 3676 KB Output is correct
5 Correct 1 ms 3676 KB Output is correct
6 Correct 1 ms 3676 KB Output is correct
7 Correct 1 ms 3676 KB Output is correct
8 Correct 1 ms 3804 KB Output is correct
9 Correct 2 ms 3676 KB Output is correct
10 Correct 1 ms 3676 KB Output is correct
11 Correct 1 ms 3768 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4444 KB Output is correct
2 Correct 10 ms 5212 KB Output is correct
3 Correct 14 ms 6144 KB Output is correct
4 Correct 19 ms 6748 KB Output is correct
5 Correct 21 ms 7508 KB Output is correct
6 Correct 26 ms 8284 KB Output is correct
7 Correct 26 ms 8020 KB Output is correct
8 Correct 3 ms 4188 KB Output is correct
9 Correct 5 ms 4836 KB Output is correct
10 Correct 7 ms 5212 KB Output is correct
11 Correct 1 ms 3676 KB Output is correct
12 Correct 1 ms 3804 KB Output is correct
13 Correct 1 ms 3672 KB Output is correct
14 Correct 1 ms 3676 KB Output is correct
15 Correct 3 ms 4420 KB Output is correct
16 Correct 6 ms 5288 KB Output is correct
17 Correct 8 ms 5956 KB Output is correct
18 Correct 1 ms 3676 KB Output is correct
19 Correct 1 ms 3676 KB Output is correct
20 Correct 1 ms 3676 KB Output is correct
21 Correct 1 ms 3676 KB Output is correct
22 Correct 1 ms 3676 KB Output is correct
23 Correct 1 ms 3676 KB Output is correct
24 Correct 1 ms 3676 KB Output is correct
25 Correct 1 ms 3804 KB Output is correct
26 Correct 2 ms 3676 KB Output is correct
27 Correct 1 ms 3676 KB Output is correct
28 Correct 1 ms 3768 KB Output is correct
29 Correct 31 ms 8344 KB Output is correct
30 Correct 10 ms 4956 KB Output is correct
31 Correct 20 ms 7652 KB Output is correct
32 Correct 13 ms 5724 KB Output is correct
33 Correct 23 ms 8064 KB Output is correct
34 Correct 17 ms 6492 KB Output is correct
35 Correct 24 ms 7772 KB Output is correct
36 Correct 20 ms 6920 KB Output is correct
37 Correct 32 ms 8136 KB Output is correct
38 Correct 26 ms 7508 KB Output is correct
39 Correct 23 ms 7816 KB Output is correct