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답안 #803144

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
803144 2023-08-02T23:40:04 Z TB_ Village (BOI20_village) C++17
25 / 100
 54 ms 14340 KB 
#include <bits/stdc++.h>
using namespace std;

// #undef _GLIBCXX_DEBUG                // disable run-time bound checking, etc
// #pragma GCC optimize("Ofast,inline") // Ofast = O3,fast-math,allow-store-data-races,no-protect-parens
// #pragma GCC optimize ("unroll-loops")

// #pragma GCC target("bmi,bmi2,lzcnt,popcnt")                      // bit manipulation
// #pragma GCC target("movbe")                                      // byte swap
// #pragma GCC target("aes,pclmul,rdrnd")                           // encryption
// #pragma GCC target("avx,avx2,f16c,fma,sse3,ssse3,sse4.1,sse4.2") // SIMD

// #include <bits/extc++.h>
// using namespace __gnu_pbds;
// template<class T>using ordered_set = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;
// template<class T>using ordered_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag,tree_order_statistics_node_update>;

#define ll long long
#define INF (ll)1e9+7
#define fo(i, n) for(int i=0;i<((ll)n);i++)
#define deb(x) cout << #x << " = " << x << endl;
#define deb2(x, y) cout << #x << " = " << x << ", " << #y << " = " << y << endl
#define pb push_back
#define mp make_pair
#define F first
#define S second
#define LSOne(S) ((S) & (-S))
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
inline int readint(){ int v = 0; char c; while((c = getchar()) != EOF && c != ' ' && c != '\n'){ v *= 10; v += c - '0'; } return v; }
inline int readintsigned() { int v = 0; int sign = 1; char c = getchar(); if (c == '-') { sign = -1; } else { v += c - '0'; } while ((c = getchar()) != EOF && c != ' ' && c != '\n') { v *= 10; v += c - '0'; } return v * sign; }
inline string readstring() { string s; char c; while ((c = getchar()) != EOF && c != '\n' && c != ' ') { s.push_back(c); } return s; }
template <class result_t=std::chrono::milliseconds,class clock_t=std::chrono::steady_clock,class duration_t = std::chrono::milliseconds>
auto since(std::chrono::time_point<clock_t, duration_t> const& start){return std::chrono::duration_cast<result_t>(clock_t::now() - start);}
typedef pair<int, int> pii;
typedef pair<ll, ll> pl;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpii;
typedef vector<pl> vpl;
typedef vector<vi> vvi;
typedef vector<vl> vvl;
typedef vector<vpii> vvpii;
typedef vector<vpl> vvpl;

vvl adj(100001);
int n, from, to;
int centroid = 0;
vector<pair<int, vi>> fromTree;

int dfs(int pos, int last = -1){
    int total = 1;
    for(auto v : adj[pos]){
        if(last == v) continue;
        total += dfs(v, pos);
    }
    if(total > n/2){
        centroid = pos;
        return 0;
    }
    return total;
}


void dfs2(int u, int last){
    fromTree[fromTree.size()-1].S.pb(u);
    fromTree[fromTree.size()-1].F++;
    for(auto v : adj[u]){
        if(v == last) continue;
        dfs2(v, u);
    }
}

pii dfsAns(int u, int last = -1){
    pii current = {1, 0}; // amount, travel
    for(auto v : adj[u]){
        if(v == last) continue;
        pii res = dfsAns(v, u);
        current.F += res.F;
        current.S += res.S+res.F*2;
    }
    return current;
}

int main() {
    // cout << fixed << setprecision(20);
    // auto start = std::chrono::steady_clock::now(); // since(start).count()
    cin.tie(0)->sync_with_stdio(0);

    cin >> n;
    fo(i, n-1){
        cin >> from >> to;
        adj[--from].pb(--to);
        adj[to].pb(from);
    }

    if(n == 2){
        cout << "2 2\n2 1\n2 1";
        exit(0);
    }

    dfs(0);
    vi hiAns(n);

    for(auto v : adj[centroid]){
        fromTree.pb({0, {}});
        dfs2(v, centroid);
    }
    sort(rall(fromTree));
    int last = centroid;
    int currentSum = 0;
    
    vl villages;
    for(auto subtree : fromTree){
        for(auto v : subtree.S) {
            villages.pb(v);
        }
    }
    villages.pb(centroid);

    
    fo(i, n){
        // deb(i/2+((i%2)^(n%2)?n/2:0));
        int current = villages[i/2+((i%2)^(n%2)?n/2:0)];
        hiAns[current] = last+1;
        last = current;
    }
    cout << "0 " << dfsAns(centroid).S << "\n"; 
    fo(i, n) cout << hiAns[i] << " ";
    cout << "\n";
    fo(i, n) cout << hiAns[i] << " ";
    



    return 0;
}

Compilation message

Village.cpp: In function 'int main()':
Village.cpp:111:9: warning: unused variable 'currentSum' [-Wunused-variable]
  111 |     int currentSum = 0;
      |         ^~~~~~~~~~

Subtask #1
6.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Partially correct 2 ms 2644 KB Partially correct
2 Partially correct 1 ms 2644 KB Partially correct
3 Correct 2 ms 2644 KB Output is correct
4 Partially correct 1 ms 2644 KB Partially correct
5 Partially correct 2 ms 2644 KB Partially correct
6 Partially correct 2 ms 2644 KB Partially correct
7 Partially correct 1 ms 2644 KB Partially correct
8 Partially correct 2 ms 2644 KB Partially correct
9 Partially correct 1 ms 2644 KB Partially correct
10 Partially correct 1 ms 2644 KB Partially correct
11 Partially correct 2 ms 2644 KB Partially correct
12 Partially correct 2 ms 2644 KB Partially correct
13 Partially correct 1 ms 2644 KB Partially correct
14 Partially correct 2 ms 2644 KB Partially correct
15 Partially correct 2 ms 2644 KB Partially correct
16 Partially correct 2 ms 2644 KB Partially correct
17 Partially correct 2 ms 2644 KB Partially correct

Subtask #2
19.0 / 38.0

# 결과 실행 시간 메모리 Grader output
1 Partially correct 2 ms 2644 KB Partially correct
2 Partially correct 2 ms 2644 KB Partially correct
3 Partially correct 2 ms 2644 KB Partially correct
4 Partially correct 2 ms 2644 KB Partially correct
5 Partially correct 2 ms 2644 KB Partially correct
6 Partially correct 2 ms 2684 KB Partially correct
7 Partially correct 2 ms 2772 KB Partially correct
8 Partially correct 2 ms 2644 KB Partially correct
9 Partially correct 2 ms 2680 KB Partially correct
10 Partially correct 2 ms 2680 KB Partially correct
11 Partially correct 2 ms 2672 KB Partially correct
12 Partially correct 2 ms 2772 KB Partially correct
13 Partially correct 2 ms 2692 KB Partially correct
14 Partially correct 2 ms 2644 KB Partially correct
15 Partially correct 2 ms 2680 KB Partially correct
16 Partially correct 2 ms 2644 KB Partially correct
17 Partially correct 2 ms 2692 KB Partially correct
18 Partially correct 2 ms 2644 KB Partially correct
19 Partially correct 2 ms 2772 KB Partially correct
20 Partially correct 2 ms 2644 KB Partially correct
21 Partially correct 2 ms 2680 KB Partially correct
22 Partially correct 2 ms 2644 KB Partially correct
23 Partially correct 2 ms 2644 KB Partially correct
24 Partially correct 2 ms 2644 KB Partially correct
25 Partially correct 2 ms 2644 KB Partially correct
26 Partially correct 2 ms 2644 KB Partially correct
27 Partially correct 1 ms 2644 KB Partially correct
28 Partially correct 2 ms 2644 KB Partially correct
29 Partially correct 2 ms 2644 KB Partially correct
30 Partially correct 2 ms 2644 KB Partially correct

Subtask #3
0.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Partially correct 2 ms 2644 KB Partially correct
2 Partially correct 1 ms 2644 KB Partially correct
3 Correct 2 ms 2644 KB Output is correct
4 Partially correct 1 ms 2644 KB Partially correct
5 Partially correct 2 ms 2644 KB Partially correct
6 Partially correct 2 ms 2644 KB Partially correct
7 Partially correct 1 ms 2644 KB Partially correct
8 Partially correct 2 ms 2644 KB Partially correct
9 Partially correct 1 ms 2644 KB Partially correct
10 Partially correct 1 ms 2644 KB Partially correct
11 Partially correct 2 ms 2644 KB Partially correct
12 Partially correct 2 ms 2644 KB Partially correct
13 Partially correct 1 ms 2644 KB Partially correct
14 Partially correct 2 ms 2644 KB Partially correct
15 Partially correct 2 ms 2644 KB Partially correct
16 Partially correct 2 ms 2644 KB Partially correct
17 Partially correct 2 ms 2644 KB Partially correct
18 Partially correct 2 ms 2644 KB Partially correct
19 Partially correct 2 ms 2644 KB Partially correct
20 Partially correct 2 ms 2644 KB Partially correct
21 Partially correct 2 ms 2644 KB Partially correct
22 Partially correct 2 ms 2644 KB Partially correct
23 Partially correct 2 ms 2684 KB Partially correct
24 Partially correct 2 ms 2772 KB Partially correct
25 Partially correct 2 ms 2644 KB Partially correct
26 Partially correct 2 ms 2680 KB Partially correct
27 Partially correct 2 ms 2680 KB Partially correct
28 Partially correct 2 ms 2672 KB Partially correct
29 Partially correct 2 ms 2772 KB Partially correct
30 Partially correct 2 ms 2692 KB Partially correct
31 Partially correct 2 ms 2644 KB Partially correct
32 Partially correct 2 ms 2680 KB Partially correct
33 Partially correct 2 ms 2644 KB Partially correct
34 Partially correct 2 ms 2692 KB Partially correct
35 Partially correct 2 ms 2644 KB Partially correct
36 Partially correct 2 ms 2772 KB Partially correct
37 Partially correct 2 ms 2644 KB Partially correct
38 Partially correct 2 ms 2680 KB Partially correct
39 Partially correct 2 ms 2644 KB Partially correct
40 Partially correct 2 ms 2644 KB Partially correct
41 Partially correct 2 ms 2644 KB Partially correct
42 Partially correct 2 ms 2644 KB Partially correct
43 Partially correct 2 ms 2644 KB Partially correct
44 Partially correct 1 ms 2644 KB Partially correct
45 Partially correct 2 ms 2644 KB Partially correct
46 Partially correct 2 ms 2644 KB Partially correct
47 Partially correct 2 ms 2644 KB Partially correct
48 Partially correct 46 ms 9860 KB Partially correct
49 Partially correct 44 ms 10512 KB Partially correct
50 Partially correct 42 ms 10556 KB Partially correct
51 Partially correct 40 ms 9016 KB Partially correct
52 Partially correct 42 ms 10560 KB Partially correct
53 Partially correct 41 ms 9676 KB Partially correct
54 Partially correct 28 ms 8592 KB Partially correct
55 Incorrect 54 ms 14340 KB Output isn't correct
56 Halted 0 ms 0 KB -