oj.uz

답안 #533530

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
533530 2022-03-06T08:59:26 Z Slavita Parkovi (COCI22_parkovi) C++14
10 / 110
 3000 ms 15868 KB 
#include <bits/stdc++.h>
/*#pragma optimize("O3")
#pragma GCC optimize("-O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("fast-math")*/
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define ve vector<int>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define pi pair<int,int>
#define all(v) v.begin(),v.end()
#define si(v) (int)v.size()
#define en '\n'
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define ordered_muiltiset tree<int, null_type,less_equal<>, rb_tree_tag,tree_order_statistics_node_update>
#define int long long
using namespace std;
//using namespace __gnu_pbds;
typedef long long ll;
typedef unsigned long long ull;

const int N = 2e5 + 228;
const int big = 1e9 + 228;
const ll llbig = 1e18 + 228;
//ordered_set os; // os.order_of_key(4), (*os.find_by_order(5))
int n, m, ans, k, q, d[N];
vector<pair<int, int>> g[N];

void dfs(int v, int dist, int pr){
    if (dist <= d[v]){
        d[v] = dist;
    }

    for (int i = 0; i < si(g[v]); i++){
        int u = g[v][i].fi;
        int cost = g[v][i].se;
        if (u == pr) continue;

        dfs(u, dist + cost, v);
    }
}

bool getbit(int mask, int bit){
    bit--;
    return (mask & (1 << bit)) == (1 << bit);
}

#undef int
int main(){
    #define int long long
    iostream::sync_with_stdio(false); cin.tie(0); ios_base::sync_with_stdio(false); cout.tie(0);
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
    cin >> n >> k;
    for (int i = 1; i <= n - 1; i++){
        int a, b, d;
        cin >> a >> b >> d;
        g[a].pb({b, d});
        g[b].pb({a, d});
    }

    ve ansv;
    int ans = llbig;
    for (int mask = 1; mask <= (1 << n); mask++){
        ve v;
        for (int i = 1; i <= n; i++){
            if (getbit(mask, i)){
                v.pb(i);
            }
        }
        if (si(v) != k) continue;

        for (int i = 1; i <= n; i++) d[i] = llbig;
        for (int i = 0; i < si(v); i++){
            dfs(v[i], 0, -1);
        }

        int mx = -llbig;
        for (int i = 1; i <= n; i++){
            mx = max(mx, d[i]);
        }

        if (mx < ans){
            ans = mx;
            ansv = v;
        }
    }
    cout << ans << en;
    for (int i = 0; i < si(ansv); i++){
        cout << ansv[i] << ' ';
    }
    return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 220 ms 5000 KB Output is correct
2 Correct 213 ms 5004 KB Output is correct
3 Correct 258 ms 4940 KB Output is correct
4 Correct 218 ms 4992 KB Output is correct
5 Correct 233 ms 4996 KB Output is correct
6 Correct 245 ms 4996 KB Output is correct
7 Correct 237 ms 4996 KB Output is correct
8 Correct 240 ms 4992 KB Output is correct
9 Correct 305 ms 4992 KB Output is correct
10 Correct 222 ms 4996 KB Output is correct
11 Correct 266 ms 4996 KB Output is correct
12 Correct 309 ms 4992 KB Output is correct
13 Correct 249 ms 4940 KB Output is correct
14 Correct 304 ms 4940 KB Output is correct

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3083 ms 15372 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3072 ms 15868 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 220 ms 5000 KB Output is correct
2 Correct 213 ms 5004 KB Output is correct
3 Correct 258 ms 4940 KB Output is correct
4 Correct 218 ms 4992 KB Output is correct
5 Correct 233 ms 4996 KB Output is correct
6 Correct 245 ms 4996 KB Output is correct
7 Correct 237 ms 4996 KB Output is correct
8 Correct 240 ms 4992 KB Output is correct
9 Correct 305 ms 4992 KB Output is correct
10 Correct 222 ms 4996 KB Output is correct
11 Correct 266 ms 4996 KB Output is correct
12 Correct 309 ms 4992 KB Output is correct
13 Correct 249 ms 4940 KB Output is correct
14 Correct 304 ms 4940 KB Output is correct
15 Execution timed out 3083 ms 15372 KB Time limit exceeded
16 Halted 0 ms 0 KB -