oj.uz

답안 #1009969

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1009969 2024-06-28T08:27:07 Z vjudge1 시간이 돈 (balkan11_timeismoney) C++17
100 / 100
 721 ms 916 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAX = 205;

struct Edge{
    int a, b, x, y;
};
struct Point{
    int x = 0, y = 0;
    vector<Edge> v = vector<Edge>{};
};
bool eq(Point& p1, Point& p2){
    return p1.x == p2.x && p1.y == p2.y;
}

int n, m, boss[MAX];
vector<Edge> edges;

int findBoss(int node){
    if(boss[node] == node) return node;
    return boss[node] = findBoss(boss[node]);
}

Point solve(int xCoeff, int yCoeff){
    for(int i = 0; i < n; i++) boss[i] = i;

    auto v = edges;
    sort(v.begin(), v.end(), [&](const Edge& e1, const Edge& e2){
         return xCoeff*e1.x + yCoeff*e1.y < xCoeff*e2.x + yCoeff*e2.y;
         });

    Point ret;
    ret.x = 0; ret.y = 0;
    for(auto e : v){
        int a = findBoss(e.a), b = findBoss(e.b);
        if(a == b) continue;

        if(rand() % 2) swap(a, b);
        boss[a] = b;

        ret.v.push_back(e);
        ret.x += e.x;
        ret.y += e.y;
    }

    return ret;
}

void print(Point& p){
    cout << p.x << ' ' << p.y << '\n';
    for(auto e : p.v) cout << e.a << ' ' << e.b << '\n';
}

Point best;
void rek(Point& a, Point& b){
    Point novi = solve(a.y - b.y, b.x - a.x);
    if(eq(a, novi) || eq(b, novi)) return;

    /*cout << "a\n";
    cout << a.x << ' ' << a.y << '\n';
    cout << "b\n";
    cout << b.x << ' ' << b.y << '\n';
    cout << "novi\n";
    cout << novi.x << ' ' << novi.y << '\n';*/
    if(novi.x * novi.y < best.x * best.y) best = novi;

    rek(a, novi);
    rek(novi, b);
}

int main(){
    srand(time(0));

    cin >> n >> m;
    for(int i = 0; i < m; i++){
        Edge e;
        cin >> e.a >> e.b >> e.x >> e.y;
        edges.push_back(e);
    }

    Point minX = solve(1, 0);
    Point minY = solve(0, 1);

    best = minX;
    if(best.x * best.y > minY.x * minY.y) best = minY;

    if(!eq(minX, minY)) rek(minX, minY);

    print(best);

    return 0;
}

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 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 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 8 ms 828 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 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 6 ms 476 KB Output is correct
15 Correct 4 ms 348 KB Output is correct
16 Correct 88 ms 348 KB Output is correct
17 Correct 91 ms 348 KB Output is correct
18 Correct 88 ms 600 KB Output is correct
19 Correct 687 ms 916 KB Output is correct
20 Correct 721 ms 824 KB Output is correct