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Submission #922348

# Submission time Handle Problem Language Result Execution time Memory
922348 2024-02-05T12:28:17 Z Shayan86 Cijanobakterije (COCI21_cijanobakterije) C++14
70 / 70
 28 ms 11356 KB 
#include <bits/stdc++.h>
using namespace std;

#pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// Ofast, O0, O1, O2, O3, unroll-loops, fast-math, trapv

typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;

#define Mp          make_pair
#define sep         ' '
#define endl        '\n'
#define F	        first
#define S	        second
#define pb          push_back
#define all(x)      (x).begin(),(x).end()
#define kill(res)	cout << res << '\n', exit(0);
#define set_dec(x)	cout << fixed << setprecision(x);
#define fast_io     ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define file_io     freopen("input.txt", "r", stdin) ; freopen("output.txt", "w", stdout);

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const ll N = 1e5 + 50;
const ll Mod = 1e9 + 7;

ll n, m;

bool mark[N];
vector<int> adj[N];

pii far(int v, int p = 0, int h = 0){
    mark[v] = true;
    pii out = Mp(h, v);
    for(int u: adj[v]){
        if(u == p) continue;
        out = max(out, far(u, v, h+1));
    }
    return out;
}

int main(){
    fast_io;

    cin >> n >> m;

    int u, v;
    for(int i = 1; i <= m; i++){
        cin >> u >> v;
        adj[u].pb(v);
        adj[v].pb(u);
    }

    ll res = 0;
    for(int i = 1; i <= n; i++){
        if(!mark[i]){
            v = far(i).S;
            res += far(v).F + 1;
        }
    }

    cout << res << endl;

}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3420 KB Output is correct
2 Correct 10 ms 4188 KB Output is correct
3 Correct 13 ms 4956 KB Output is correct
4 Correct 18 ms 5724 KB Output is correct
5 Correct 22 ms 6328 KB Output is correct
6 Correct 25 ms 7512 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 11356 KB Output is correct
2 Correct 3 ms 3084 KB Output is correct
3 Correct 5 ms 3796 KB Output is correct
4 Correct 7 ms 4108 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 3 ms 3420 KB Output is correct
6 Correct 6 ms 4084 KB Output is correct
7 Correct 7 ms 4700 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 1 ms 2652 KB Output is correct
9 Correct 1 ms 2648 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 2 ms 2652 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3420 KB Output is correct
2 Correct 10 ms 4188 KB Output is correct
3 Correct 13 ms 4956 KB Output is correct
4 Correct 18 ms 5724 KB Output is correct
5 Correct 22 ms 6328 KB Output is correct
6 Correct 25 ms 7512 KB Output is correct
7 Correct 24 ms 11356 KB Output is correct
8 Correct 3 ms 3084 KB Output is correct
9 Correct 5 ms 3796 KB Output is correct
10 Correct 7 ms 4108 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 3 ms 3420 KB Output is correct
16 Correct 6 ms 4084 KB Output is correct
17 Correct 7 ms 4700 KB Output is correct
18 Correct 2 ms 2648 KB Output is correct
19 Correct 1 ms 2652 KB Output is correct
20 Correct 1 ms 2652 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2652 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2648 KB Output is correct
27 Correct 1 ms 2652 KB Output is correct
28 Correct 2 ms 2652 KB Output is correct
29 Correct 28 ms 7296 KB Output is correct
30 Correct 6 ms 3932 KB Output is correct
31 Correct 24 ms 6568 KB Output is correct
32 Correct 10 ms 4700 KB Output is correct
33 Correct 28 ms 6996 KB Output is correct
34 Correct 15 ms 5468 KB Output is correct
35 Correct 18 ms 6748 KB Output is correct
36 Correct 20 ms 5852 KB Output is correct
37 Correct 22 ms 7004 KB Output is correct
38 Correct 26 ms 6492 KB Output is correct
39 Correct 21 ms 6748 KB Output is correct