oj.uz

답안 #1046306

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1046306 2024-08-06T12:44:23 Z dilanyan Petrol stations (CEOI24_stations) C++17
0 / 100
 92 ms 20296 KB 
//-------------dilanyan------------\\ 
 
#define _CRT_SECURE_NO_WARNINGS
#include<bits/stdc++.h>
#include<stdio.h>
using namespace std;
 
//------------------Kargpefines--------------------\\ 
 
#define ll long long
#define pb push_back
#define all(u) (u).begin(), (u).end()
#define pqueue priority_queue
#define upper upper_bound
#define lower lower_bound
#define umap unordered_map
#define uset unordered_set
 
void KarginSet(string name = "") {
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    if (name.size()) {
        freopen((name + ".in").c_str(), "r", stdin);
        freopen((name + ".out").c_str(), "w", stdout);
    }
}
 
//-------------------KarginConstants------------------\\ 
 
const ll mod = 1e9 + 7;
const ll inf = 2e9;
 
//-------------------KarginCode-----------------------\\ 
 
const int N = 70005, M = 1000005;

ll n, k;

vector<pair<int, int>> g[N];
ll ans[N];
int s[N];
vector<int> ord;

void dfs(int u, int p) {
    ord.pb(u);
    for (auto it : g[u]) {
        int v = it.first;
        if (v == p) continue;
        dfs(v, u);
    }
}

ll l[N], r[N];
ll prefl[N], sufr[N];
ll pref[N], suf[N];

void KarginSolve() {
    cin >> n >> k;
    map<pair<int, int>, ll> mp;
    for (int i = 0;i < n - 1;i++) {
        int u, v, l;
        cin >> u >> v >> l;
        g[u].pb({ v,l }), g[v].pb({ u,l });
        mp[{u, v}] = mp[{v, u}] = l;
    }
    for (int i = 0;i < n;i++) {
        if (g[i].size() == 1) {
            dfs(i, -1);
            break;
        }
    }
    for (int i = 1;i < n;i++) {
        pref[i] = pref[i - 1] + mp[{ord[i], ord[i - 1]}];
    }
    for (int i = n - 2;i >= 0;i--) {
        suf[i] = suf[i + 1] + mp[{ord[i], ord[i + 1]}];
    }
    l[0] = 0;
    for (int i = 0;i < n - 1;i++) {
        int lx = i + 1, rx = n - 1, j = i + 1;
        while (lx <= rx) {
            int m = (lx + rx) / 2;
            if (pref[m] - pref[i] <= k) {
                lx = m + 1;
                j = m;
            }
            else rx = m - 1;
        }
        l[j] += l[i] + 1;
    }
    r[n - 1] = 0;
    for (int i = n - 1;i > 0;i--) {
        int lx = 0, rx = i - 1, j = i - 1;
        while (lx <= rx) {
            int m = (lx + rx) / 2;
            if (suf[m] - suf[i] <= k) {
                rx = m - 1;
                j = m;
            }
            else lx = m + 1;
        }
        r[j] += r[i] + 1;
    }
    for (int i = 0;i < n;i++) {
        ans[i] = l[i] * (n - 1 - i) + r[i] * i;
    }
    for (int i = 0;i < n;i++) cout << ans[i] << '\n';
}

int main() {
    KarginSet();
    int test = 1;
    //cin >> test;
    while (test--) {
        KarginSolve();
    }
    return 0;
}

Compilation message

Main.cpp:1:1: warning: multi-line comment [-Wcomment]
    1 | //-------------dilanyan------------\\
      | ^
Main.cpp:8:1: warning: multi-line comment [-Wcomment]
    8 | //------------------Kargpefines--------------------\\
      | ^
Main.cpp:27:1: warning: multi-line comment [-Wcomment]
   27 | //-------------------KarginConstants------------------\\
      | ^
Main.cpp:32:1: warning: multi-line comment [-Wcomment]
   32 | //-------------------KarginCode-----------------------\\
      | ^
Main.cpp: In function 'void KarginSet(std::string)':
Main.cpp:22:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         freopen((name + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:23:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 3932 KB Output is correct
2 Correct 1 ms 3956 KB Output is correct

Subtask #1
0.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 3932 KB Output is correct
2 Correct 1 ms 3956 KB Output is correct
3 Incorrect 1 ms 3932 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 3932 KB Output is correct
2 Incorrect 89 ms 20296 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 3932 KB Output is correct
2 Correct 1 ms 3956 KB Output is correct
3 Correct 1 ms 3932 KB Output is correct
4 Incorrect 89 ms 20296 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 3932 KB Output is correct
2 Correct 1 ms 3956 KB Output is correct
3 Incorrect 92 ms 17264 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 3932 KB Output is correct
2 Correct 1 ms 3956 KB Output is correct
3 Incorrect 92 ms 17264 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 3932 KB Output is correct
2 Correct 1 ms 3956 KB Output is correct
3 Incorrect 1 ms 3932 KB Output isn't correct
4 Halted 0 ms 0 KB -