Submission #49629

#	Time	Username	Problem	Language	Result	Execution time	Memory
49629		Alexa2001	timeismoney (balkan11_timeismoney)	C++17	100 / 100	600 ms	876 KiB

timeismoney

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
const int Nmax = 1e4 + 5;

int n, m, i, A, B, coef1, coef2, t[Nmax];
ll ans = LLONG_MAX;

struct edge
{
    int x, y, c, d;
    bool operator < (const edge &other) const
    {
        return c * A + d * B < other.c * A + other.d * B;
    }
} a[Nmax];

struct point
{
    int x, y;
    bool operator == (const point &other)
    {
        return x == other.x && y == other.y;
    }
};

inline ll parr(point A)
{
    return (ll) A.x * A.y;
}

int boss(int x)
{
    if(t[x] == x) return x;
    return t[x] = boss(t[x]);
}

point apm(int _A, int _B)
{
    A = _A, B = _B;
    sort(a+1, a+m+1);

    point ans = {0, 0};

    int i;
    for(i=0; i<n; ++i) t[i] = i;

    for(i=1; i<=m; ++i)
        if(boss(a[i].x) != boss(a[i].y))
        {
            ans.x += a[i].c;
            ans.y += a[i].d;
            t[t[a[i].x]] = t[a[i].y];
        }
    return ans;
}

void print_sol(int _A, int _B)
{
    A = _A, B = _B;
    sort(a+1, a+m+1);

    point ans = {0, 0};
    vector<point> v;

    int i;
    for(i=0; i<n; ++i) t[i] = i;

    for(i=1; i<=m; ++i)
        if(boss(a[i].x) != boss(a[i].y))
        {
            ans.x += a[i].c;
            ans.y += a[i].d;
            t[t[a[i].x]] = t[a[i].y];
            v.push_back({a[i].x, a[i].y});
        }

    cout << ans.x << ' ' << ans.y << '\n';
    for(auto e : v)
        cout << e.x << ' ' << e.y << '\n';
}

ll det(point A, point B, point C)
{
    return (ll) A.x * (B.y - C.y) + (ll) B.x * (C.y - A.y) + (ll) C.x * (A.y - B.y);
}

void solve(point A, point B)
{
    int p = A.y - B.y, q = B.x - A.x;
    point C = apm(p, q);

    if(!det(A, B, C)) return;

    if(parr(C) < ans)
        coef1 = p, coef2 = q, ans = parr(C);

    solve(A, C);
    solve(C, B);
}

int main()
{
 //   freopen("input", "r", stdin);
  //  freopen("output", "w", stdout);

    cin.sync_with_stdio(false);

    cin >> n >> m;
    for(i=1; i<=m; ++i)
        cin >> a[i].x >> a[i].y >> a[i].c >> a[i].d;

    point A = apm(1, 0);
    point B = apm(0, 1);

    if(parr(A) < ans)
        coef1 = 1, coef2 = 0, ans = parr(A);

    if(parr(B) < ans)
        coef1 = 0, coef2 = 1, ans = parr(B);

    if(A == B);
        else solve(A, B);

    print_sol(coef1, coef2);
    return 0;
}

• Subtask 1: 100 / 100