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답안 #537485

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
537485 2022-03-15T07:14:34 Z maomao90 Paths (RMI21_paths) C++17
48 / 100
 600 ms 10324 KB 
// Hallelujah, praise the one who set me free
// Hallelujah, death has lost its grip on me
// You have broken every chain, There's salvation in your name
// Jesus Christ, my living hope
#include <bits/stdc++.h> 
using namespace std;

template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}
#define REP(i, s, e) for (int i = s; i < e; i++)
#define RREP(i, s, e) for (int i = s; i >= e; i--)
typedef long long ll;
typedef long double ld;
#define MP make_pair
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
#define MT make_tuple
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;

#ifndef DEBUG
#define cerr if (0) cerr
#endif

#define INF 1000000005
#define LINF 1000000000000000005ll
#define MAXN 100005

int n, k;
vii adj[MAXN];

multiset<ll> st;
ll mx[MAXN];
void dfs(int u, int p) {
    mx[u] = 0;
    bool leaf = 1;
    for (auto [v, w] : adj[u]) {
        if (v == p) continue;
        leaf = 0;
        dfs(v, u);
        auto it = st.find(mx[v]);
        st.insert(mx[v] + w);
        if (it != st.end()) {
            st.erase(st.find(mx[v]));
        } else {
            st.erase(st.begin());
        }
        mxto(mx[u], mx[v] + w);
    }
    if (leaf && st.size() < k) {
        st.insert(0);
    }
}

int main() {
#ifndef DEBUG
    ios::sync_with_stdio(0), cin.tie(0);
#endif
    cin >> n >> k;
    REP (i, 1, n) {
        int a, b, c; cin >> a >> b >> c;
        adj[a].pb(MP(b, c));
        adj[b].pb(MP(a, c));
    }
    if (k == 1) {
        vll dist(n + 1, 0);
        vll ans(n + 1, 0);
        auto dfs = [&] (auto &&self, int u, int p) {
            if (0) return -1;
            int mx = u;
            for (auto [v, w] : adj[u]) {
                if (v == p) continue;
                dist[v] = dist[u] + w;
                int x = self(self, v, u);
                if (dist[mx] < dist[x]) {
                    mx = x;
                }
            }
            return mx;
        };
        dist[1] = 0;
        int a = dfs(dfs, 1, -1);
        dist[a] = 0;
        int b = dfs(dfs, a, -1);
        REP (i, 1, n + 1) {
            mxto(ans[i], dist[i]);
        }
        dist[b] = 0;
        dfs(dfs, b, -1);
        REP (i, 1, n + 1) {
            mxto(ans[i], dist[i]);
        }
        REP (i, 1, n + 1) {
            cout << ans[i] << '\n';
        }
        return 0;
    }
    REP (i, 1, n + 1) {
        st.clear();
        dfs(i, -1);
        ll ans = 0;
        for (ll x : st) {
            ans += x;
        }
        cout << ans << '\n';
    }
    return 0;
}

Compilation message

Main.cpp: In function 'void dfs(int, int)':
Main.cpp:58:27: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   58 |     if (leaf && st.size() < k) {
      |                 ~~~~~~~~~~^~~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 6 ms 2688 KB Output is correct
4 Correct 6 ms 2644 KB Output is correct
5 Correct 5 ms 2644 KB Output is correct
6 Correct 5 ms 2644 KB Output is correct
7 Correct 6 ms 2688 KB Output is correct

Subtask #3
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 6 ms 2688 KB Output is correct
4 Correct 6 ms 2644 KB Output is correct
5 Correct 5 ms 2644 KB Output is correct
6 Correct 5 ms 2644 KB Output is correct
7 Correct 6 ms 2688 KB Output is correct
8 Correct 133 ms 2720 KB Output is correct
9 Correct 111 ms 2772 KB Output is correct
10 Correct 130 ms 2736 KB Output is correct
11 Correct 103 ms 2732 KB Output is correct
12 Correct 145 ms 2724 KB Output is correct

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 6 ms 2688 KB Output is correct
4 Correct 6 ms 2644 KB Output is correct
5 Correct 5 ms 2644 KB Output is correct
6 Correct 5 ms 2644 KB Output is correct
7 Correct 6 ms 2688 KB Output is correct
8 Correct 133 ms 2720 KB Output is correct
9 Correct 111 ms 2772 KB Output is correct
10 Correct 130 ms 2736 KB Output is correct
11 Correct 103 ms 2732 KB Output is correct
12 Correct 145 ms 2724 KB Output is correct
13 Execution timed out 888 ms 2796 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 94 ms 9024 KB Output is correct
2 Correct 107 ms 10324 KB Output is correct
3 Correct 59 ms 8688 KB Output is correct
4 Correct 67 ms 8984 KB Output is correct
5 Correct 112 ms 9816 KB Output is correct
6 Correct 68 ms 8984 KB Output is correct

Subtask #6
0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 6 ms 2688 KB Output is correct
4 Correct 6 ms 2644 KB Output is correct
5 Correct 5 ms 2644 KB Output is correct
6 Correct 5 ms 2644 KB Output is correct
7 Correct 6 ms 2688 KB Output is correct
8 Correct 133 ms 2720 KB Output is correct
9 Correct 111 ms 2772 KB Output is correct
10 Correct 130 ms 2736 KB Output is correct
11 Correct 103 ms 2732 KB Output is correct
12 Correct 145 ms 2724 KB Output is correct
13 Execution timed out 888 ms 2796 KB Time limit exceeded
14 Halted 0 ms 0 KB -