oj.uz

Submission #932480

# Submission time Handle Problem Language Result Execution time Memory
932480 2024-02-23T13:34:44 Z Whisper Cijanobakterije (COCI21_cijanobakterije) C++17
70 / 70
 29 ms 18772 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define int long long
#define FOR(i, a, b) for ( int i = a ; i <= b ; i++ )
#define FORD(i, a, b) for (int i = b; i >= a; i --)
#define REP(i, n) for (int i = 0; i < n; ++i)
#define REPD(i, n) for (int i = n - 1; i >= 0; --i)
#define pii pair<int , int>
#define Lg(x) 31 - __builtin_clz(x)

#define MASK(i) (1LL << (i))
#define BIT(x, i) (((x) >> (i)) & 1)

constexpr ll LINF = (1ll << 60);
constexpr int INF = (1ll << 30);
constexpr int MAX = 2e5 + 5;
constexpr int Mod = 1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

void setupIO(){
    #define name "Whisper"
    //Phu Trong from Nguyen Tat Thanh High School for gifted student
    srand(time(NULL));
    cin.tie(nullptr)->sync_with_stdio(false); cout.tie(nullptr);
   // freopen(name".inp", "r", stdin);
   // freopen(name".out", "w", stdout);
    cout << fixed << setprecision(10);
}

template <class X, class Y>
    bool minimize(X &x, const Y &y){
        X eps = 1e-9;
        if (x > y + eps) {x = y; return 1;}
        return 0;
    }

template <class X, class Y>
    bool maximize(X &x, const Y &y){
        X eps = 1e-9;
        if (x + eps < y) {x = y; return 1;}
        return 0;
    }
int numNode, numEdge;
vector<int> adj[MAX];
int vis[MAX];
pair<int, int> dfs(int u, int p, int maxLength){
    vis[u] = 1;
    pair<int, int> ans = {maxLength, u};
    for (int v : adj[u]) if(v ^ p){
        ans = max(ans, dfs(v, u, maxLength + 1));
    }
    return ans;
}
void Whisper(){
    cin >> numNode >> numEdge;
    for (int i = 1; i <= numEdge; ++i){
        int u, v; cin >> u >> v;
        adj[u].push_back(v);
        adj[v].push_back(u);
    }

    int ans = 0;
    for (int i = 1; i <= numNode; ++i) if(!vis[i]){
        int v = dfs(i, 0, 1).second;
        ans += dfs(v, 0, 1).first;
    }
    cout << ans;
}


signed main(){
    setupIO();
    int Test = 1;
//    cin >> Test;
    for ( int i = 1 ; i <= Test ; i++ ){
        Whisper();
        if (i < Test) cout << '\n';
    }
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7260 KB Output is correct
2 Correct 10 ms 8284 KB Output is correct
3 Correct 15 ms 9120 KB Output is correct
4 Correct 19 ms 9820 KB Output is correct
5 Correct 26 ms 10584 KB Output is correct
6 Correct 28 ms 11608 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 18772 KB Output is correct
2 Correct 4 ms 7000 KB Output is correct
3 Correct 6 ms 7516 KB Output is correct
4 Correct 8 ms 8180 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6548 KB Output is correct
5 Correct 4 ms 7260 KB Output is correct
6 Correct 6 ms 7816 KB Output is correct
7 Correct 8 ms 8528 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6488 KB Output is correct
2 Correct 2 ms 6548 KB Output is correct
3 Correct 2 ms 6444 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6488 KB Output is correct
8 Correct 2 ms 6488 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6488 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7260 KB Output is correct
2 Correct 10 ms 8284 KB Output is correct
3 Correct 15 ms 9120 KB Output is correct
4 Correct 19 ms 9820 KB Output is correct
5 Correct 26 ms 10584 KB Output is correct
6 Correct 28 ms 11608 KB Output is correct
7 Correct 28 ms 18772 KB Output is correct
8 Correct 4 ms 7000 KB Output is correct
9 Correct 6 ms 7516 KB Output is correct
10 Correct 8 ms 8180 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 2 ms 6548 KB Output is correct
15 Correct 4 ms 7260 KB Output is correct
16 Correct 6 ms 7816 KB Output is correct
17 Correct 8 ms 8528 KB Output is correct
18 Correct 2 ms 6488 KB Output is correct
19 Correct 2 ms 6548 KB Output is correct
20 Correct 2 ms 6444 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 2 ms 6488 KB Output is correct
25 Correct 2 ms 6488 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 2 ms 6492 KB Output is correct
28 Correct 2 ms 6488 KB Output is correct
29 Correct 29 ms 11400 KB Output is correct
30 Correct 8 ms 7584 KB Output is correct
31 Correct 18 ms 10588 KB Output is correct
32 Correct 12 ms 8536 KB Output is correct
33 Correct 25 ms 11056 KB Output is correct
34 Correct 16 ms 9308 KB Output is correct
35 Correct 24 ms 10604 KB Output is correct
36 Correct 22 ms 10076 KB Output is correct
37 Correct 24 ms 11100 KB Output is correct
38 Correct 27 ms 10584 KB Output is correct
39 Correct 23 ms 10884 KB Output is correct