oj.uz

답안 #999464

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
999464 2024-06-15T14:25:29 Z Andrei_ierdnA 시간이 돈 (balkan11_timeismoney) C++17
65 / 100
 13 ms 920 KB 
#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

#define MAXN 200
#define MAXM 10000
#define BULAN 50

struct Edge
{
    int index, x, y;
    long long t, c;
    int other(int node)
    {
        return (node == x) ? y : x;
    }
    static bool indexCmp(const Edge &a, const Edge &b)
    {
        return (a.index < b.index);
    }
};

struct Apm
{
    long long t = 1000000, c = 1000000;
    int eid[MAXN+3];
    bool operator < (const Apm &other) const
    {
        return t * c < other.t * other.c;
    }
};

struct Dsu
{
    int p[MAXN+3], nrdsu;
    void init(int n)
    {
        nrdsu = n;
        for (int i = 1; i <= n; i++) {
            p[i] = -1;
        }
    }
    int getRoot(int node)
    {
        if (p[node] < 0) return node;
        return p[node] = getRoot(p[node]);
    }
    bool dsuMerge(int a, int b)
    {
        a = getRoot(a);
        b = getRoot(b);
        if (a == b) return false;
        if (p[a] > p[b]) swap(a, b);
        p[a] += p[b];
        p[b] = a;
        nrdsu--;
        return true;
    }
} dsu;

long long tm = 1, cm = 1;
int n, m;
Edge edges[10010];
Apm apms[2];
int ansapm = 0;

bool operator < (const Edge &a, const Edge &b)
{
    return (a.t - b.t) * tm + (a.c - b.c) * cm < 0;
}

void genApm(Apm &apm)
{
    sort(edges+1, edges+m+1);
    apm.t = apm.c = 0;
    dsu.init(n);
    int k = 0;
    for (int i = 1; k < n-1; i++) {
        if (dsu.dsuMerge(edges[i].x, edges[i].y)) {
            apm.t += edges[i].t;
            apm.c += edges[i].c;
            apm.eid[++k] = edges[i].index;
        }
    }
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin >> n >> m;
    for (int i = 1; i <= m; i++) {
        edges[i].index = i;
        cin >> edges[i].x >> edges[i].y;
        edges[i].x++;
        edges[i].y++;
        cin >> edges[i].t >> edges[i].c;
    }
    tm = cm = 1;
    for (int cnt = 1; cnt <= BULAN; cnt++) {
        genApm(apms[ansapm^1]);
        tm = apms[ansapm^1].c;
        cm = apms[ansapm^1].t;
        if (apms[ansapm^1] < apms[ansapm]) {
            ansapm ^= 1;
        }
    }
    sort(edges+1, edges+m+1, Edge::indexCmp);
    cout << apms[ansapm].t << ' ' << apms[ansapm].c << '\n';
    for (int i = 1; i < n; i++) {
        cout << edges[apms[ansapm].eid[i]].x - 1 << ' ' << edges[apms[ansapm].eid[i]].y - 1 << '\n';
    }
    return 0;
}

Subtask #1
65.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 344 KB Output is correct
7 Correct 3 ms 348 KB Output is correct
8 Correct 10 ms 920 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Incorrect 0 ms 348 KB Output isn't correct
12 Correct 0 ms 352 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Incorrect 1 ms 348 KB Output isn't correct
16 Incorrect 3 ms 560 KB Output isn't correct
17 Incorrect 2 ms 348 KB Output isn't correct
18 Incorrect 3 ms 348 KB Output isn't correct
19 Incorrect 13 ms 916 KB Output isn't correct
20 Incorrect 12 ms 856 KB Output isn't correct