oj.uz

답안 #1010564

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1010564 2024-06-29T08:07:20 Z vjudge1 시간이 돈 (balkan11_timeismoney) C++17
85 / 100
 301 ms 2900 KB 
// ^^
// <{:3
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4.1,sse4.2,popcnt,tune=native")
//#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math")
#pragma GCC optimize("O3")
#include<bits/stdc++.h>
#define int long signed long int
#define ld long double
using namespace std;
const int maxn = 202;
vector<tuple<ld, ld, int, int>> edges; // c t x y
pair<int, ld> ans; // val, k
int p[maxn];
int n, m;

inline void rt() { for(int i = 0; i <= n; ++i) p[i] = i; }

int f(int x)
{
    if(p[x] == x) return x;
    return p[x] = f(p[x]);
}

inline void u(int x, int y)
{
    x = f(x); y = f(y);
    if(x == y) return;
    p[x] = y;
}

pair<int, int> mst(ld k)
{
    vector<tuple<ld, ld, ld, int, int>> v;
    rt();

    for(auto [c, t, x, y] : edges) v.emplace_back(t+k*c, c, t, x, y);
    sort(v.begin(), v.end());

    pair<int, int> ret(0, 0);
    for(auto [val, c, t, x, y] : v)
    {
        if(f(x) != f(y))
        {
            ret.first += c;
            ret.second += t;
            u(x, y);
        }
    }

    return ret;
}

void rec(ld x1, ld y1, ld x2, ld y2, int dep)
{
    if(x1 == x2) return;

    //cout << x1 << " " << y1 << " " << x2 << " " << y2 << " bananus" << endl;
    if(dep > 6) return;

    ld k = (y1 - y2) / (x1 - x2);
    ld c = y1 - (k * x1);

    pair<int, int> novi = mst(-k);

    ld y = (k*novi.first) + c;

    //cout << novi.first << " " << novi.second << " " << k << " dbdb\n";

    if(novi.second >= y) return;

    if(novi.first * novi.second < ans.first)
    {
        ans.first = novi.first * novi.second;
        ans.second = k;
    }

    rec(x1, y1, novi.first, novi.second, dep+1);
    rec(x2, y2, novi.first, novi.second, dep+1);
}

signed main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    //freopen("19-timeismoney.in", "r", stdin);
    ans = {1e9, 0};

    cin >> n >> m;

    for(int i = 0; i < m; ++i)
    {
        ld t, c;
        int x, y;
        cin >> x >> y >> t >> c;
        edges.emplace_back(t, c, x, y);
    }

    rt();
    vector<pair<int, int>> minte, mince;
    sort(edges.begin(), edges.end());
    pair<int, int> mint(0, 0);
    for(auto &[t, c, x, y] : edges)
    {
        int xtr = f(x), ytr = f(y);
        if(xtr != ytr)
        {
            mint.first += c;
            mint.second += t;
            minte.emplace_back(x, y);
            u(xtr, ytr);
        }
        swap(t, c);
    }

    rt();
    sort(edges.begin(), edges.end());
    pair<int, int> minc(0, 0);
    for(auto &[c, t, x, y] : edges)
    {
        int xtr = f(x), ytr = f(y);
        if(xtr != ytr)
        {
            minc.first += c;
            minc.second += t;
            mince.emplace_back(x, y);
            u(xtr, ytr);
        }
    }

    rec(minc.first, minc.second, mint.first, mint.second, 0);

    if(minc.first * minc.second < ans.first)
    {
        swap(minc.first, minc.second);
        cout << minc.first << " " << minc.second << "\n";
        for(auto [x, y] : mince) cout << x << " " << y << "\n";
        return 0;
    }
    if(mint.first * mint.second < ans.first)
    {
        swap(mint.first, mint.second);
        cout << mint.first << " " << mint.second << "\n";
        for(auto [x, y] : minte) cout << x << " " << y << "\n";
        return 0;
    }


    rt();
    ld k = -ans.second;
    vector<tuple<ld, ld, ld, int, int>> v;
    for(auto [c, t, x, y] : edges) v.emplace_back(t+k*c, c, t, x, y);

    sort(v.begin(), v.end());

    pair<int, int> ret(0, 0);
    vector<pair<int, int>> ansedge;
    for(auto [val, c, t, x, y] : v)
    {
        if(f(x) != f(y))
        {
            ret.first += c;
            ret.second += t;
            u(x, y);
            ansedge.emplace_back(x, y);
        }
    }

    swap(ret.first, ret.second);
    cout << ret.first << " " << ret.second << "\n";
    for(auto [x, y] : ansedge) cout << x << " " << y << "\n";
}

Subtask #1
85.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 2 ms 604 KB Output is correct
8 Correct 6 ms 1368 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 1 ms 492 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 8 ms 348 KB Output is correct
15 Correct 7 ms 560 KB Output is correct
16 Incorrect 45 ms 864 KB Output isn't correct
17 Correct 45 ms 856 KB Output is correct
18 Correct 45 ms 860 KB Output is correct
19 Incorrect 301 ms 2900 KB Output isn't correct
20 Incorrect 272 ms 2652 KB Output isn't correct