oj.uz

답안 #955974

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
955974 2024-03-31T18:28:15 Z shezitt Papričice (COCI20_papricice) C++17
15 / 110
 19 ms 468 KB 
#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

using ll = long long;

#define int ll
#define fore(i, a, b) for(int i=a; i<b; ++i)
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define pb(x) push_back(x)
#define vi vector<int>

const int N = 205;

vi adj[N];

int n;

int taken[N];

int dfs(int x, int prev=-1){
    int tam = 1;

    for(int child : adj[x]){
        if(child == prev) continue;
        tam += dfs(child, x);
    }

    if(taken[x]){

        taken[x] = tam;

        tam = 0;
    }   

    return tam;

}

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> n;

    if(n <= 200){
        fore(i, 0, n-1){
            int u, v;
            cin >> u >> v;
            adj[u].pb(v);
            adj[v].pb(u);
        }

        int ans = 1e9;

        taken[1] = 1;

        for(int i=2; i<=n; ++i){
            for(int j=i+1; j<=n; ++j){
                taken[1] = taken[i] = taken[j] = 1;

                dfs(1);
                ans = min(ans, max({taken[1],taken[i],taken[j]}) - min({taken[1],taken[i],taken[j]}));

                taken[1] = taken[i] = taken[j] = 0;
            }
        }

        cout << ans;

        return 0;

    }


}

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 344 KB Output is correct
2 Correct 19 ms 348 KB Output is correct
3 Correct 14 ms 344 KB Output is correct
4 Correct 16 ms 348 KB Output is correct
5 Correct 18 ms 468 KB Output is correct

Subtask #2
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 344 KB Output is correct
2 Correct 19 ms 348 KB Output is correct
3 Correct 14 ms 344 KB Output is correct
4 Correct 16 ms 348 KB Output is correct
5 Correct 18 ms 468 KB Output is correct
6 Incorrect 0 ms 348 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #3
0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 344 KB Output is correct
2 Correct 19 ms 348 KB Output is correct
3 Correct 14 ms 344 KB Output is correct
4 Correct 16 ms 348 KB Output is correct
5 Correct 18 ms 468 KB Output is correct
6 Incorrect 0 ms 348 KB Output isn't correct
7 Halted 0 ms 0 KB -