oj.uz

답안 #993823

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
993823 2024-06-06T13:08:31 Z prvocislo Designated Cities (JOI19_designated_cities) C++17
30 / 100
 2000 ms 47956 KB 
#include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <cmath>
#include <deque>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <string>
#include <vector>
typedef long long ll;
typedef long double ld;
using namespace std;

struct edge
{
    int u, v;
    ll cuv, cvu, c2;
};
vector<vector<edge> > g;
vector<ll> dps, dp, d, v;
void dfs1a(int u, int p = -1)
{
    for (edge e : g[u]) if (e.v != p)
    {
        dfs1a(e.v, u);
        dps[u] += dps[e.v] + e.cvu;
    }
}
void dfs1b(int u, int p = -1, ll nad = 0)
{
    dp[u] = dps[u] + nad;
    for (edge e : g[u]) if (e.v != p)
    {
        dfs1b(e.v, u, nad + dps[u] - dps[e.v] - e.cvu + e.cuv);
    }
}
ll dfs(int u, int p = -1)
{
    vector<ll> my;
    for (edge e : g[u]) if (e.v != p)
    {
        my.push_back(dfs(e.v, u) + e.cuv);
    }
    sort(my.begin(), my.end(), greater<ll>());
    for (int i = 1; i < my.size(); i++) v.push_back(my[i]);
    if (my.empty()) my.push_back(0);
    return my[0];
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    g.assign(n, {}), dps.assign(n, 0), dp.assign(n, 0), d.assign(n, 0), v.clear();
    ll sum = 0;
    for (int i = 0; i < n - 1; i++)
    {
        edge e;
        cin >> e.u >> e.v >> e.cuv >> e.cvu;
        e.u--, e.v--, e.c2 = e.cuv + e.cvu;
        g[e.u].push_back(e);
        swap(e.u, e.v), swap(e.cuv, e.cvu);
        g[e.u].push_back(e);
        sum += e.c2;
    }
    dfs1a(0);
    dfs1b(0);
    vector<ll> ans(n + 1, 0);
    ans[1] = *max_element(dp.begin(), dp.end());
    bool f = false;
    int q;
    cin >> q;
    while (q--)
    {
        int x;
        cin >> x;
        if (x == 1) cout << (sum - ans[x]) << "\n";
        else
        {
            if (!f)
            {
                for (int a = 0; a < n; a++) if (g[a].size() == 1)
                {
                    v.clear();
                    v.push_back(dfs(a));
                    sort(v.begin(), v.end(), greater<ll>());
                    ll s = dp[a];
                    for (int i = 0; i < v.size(); i++) s += v[i], ans[i + 2] = max(ans[i + 2], s);
                }
                for (int i = 1; i <= n; i++) ans[i] = max(ans[i], ans[i - 1]);
                f = true;
            }
            cout << (sum - ans[x]) << "\n";
        }
    }
    return 0;
}

Compilation message

designated_cities.cpp: In function 'll dfs(int, int)':
designated_cities.cpp:50:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for (int i = 1; i < my.size(); i++) v.push_back(my[i]);
      |                     ~~^~~~~~~~~~~
designated_cities.cpp: In function 'int main()':
designated_cities.cpp:94:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   94 |                     for (int i = 0; i < v.size(); i++) s += v[i], ans[i + 2] = max(ans[i + 2], s);
      |                                     ~~^~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 452 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 145 ms 34832 KB Output is correct
3 Correct 175 ms 47860 KB Output is correct
4 Correct 122 ms 33480 KB Output is correct
5 Correct 113 ms 34752 KB Output is correct
6 Correct 127 ms 36948 KB Output is correct
7 Correct 129 ms 33980 KB Output is correct
8 Correct 194 ms 47956 KB Output is correct
9 Correct 85 ms 33452 KB Output is correct

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Execution timed out 2093 ms 36136 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 452 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 92 ms 808 KB Output is correct
14 Correct 2 ms 856 KB Output is correct
15 Correct 85 ms 600 KB Output is correct
16 Correct 91 ms 604 KB Output is correct
17 Correct 94 ms 848 KB Output is correct
18 Correct 92 ms 812 KB Output is correct
19 Correct 100 ms 604 KB Output is correct
20 Correct 101 ms 828 KB Output is correct
21 Correct 93 ms 600 KB Output is correct
22 Correct 72 ms 600 KB Output is correct
23 Correct 155 ms 820 KB Output is correct
24 Correct 302 ms 856 KB Output is correct
25 Correct 25 ms 860 KB Output is correct
26 Correct 430 ms 1104 KB Output is correct

Subtask #5
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 145 ms 34832 KB Output is correct
3 Correct 175 ms 47860 KB Output is correct
4 Correct 122 ms 33480 KB Output is correct
5 Correct 113 ms 34752 KB Output is correct
6 Correct 127 ms 36948 KB Output is correct
7 Correct 129 ms 33980 KB Output is correct
8 Correct 194 ms 47956 KB Output is correct
9 Correct 85 ms 33452 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Execution timed out 2093 ms 36136 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #6
0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 452 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 145 ms 34832 KB Output is correct
14 Correct 175 ms 47860 KB Output is correct
15 Correct 122 ms 33480 KB Output is correct
16 Correct 113 ms 34752 KB Output is correct
17 Correct 127 ms 36948 KB Output is correct
18 Correct 129 ms 33980 KB Output is correct
19 Correct 194 ms 47956 KB Output is correct
20 Correct 85 ms 33452 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Execution timed out 2093 ms 36136 KB Time limit exceeded
23 Halted 0 ms 0 KB -