oj.uz

Submission #37116

# Submission time Handle Problem Language Result Execution time Memory
37116 2017-12-21T13:13:21 Z Angelos timeismoney (balkan11_timeismoney) C++11
100 / 100
 869 ms 2176 KB 
#include <bits/stdc++.h>

using namespace std;

typedef pair<int,int> pi;

struct edge{int s,e,x,y;}adj[10004];

int N , M;
typedef long long lint;
int mc1 , mc2 , mx = 1e9 , my = 1e9 , CUR1 , CUR2;

struct disj{
    int pa[204];
    void init(int n){for(int i=0; i<n; i++) pa[i] = i;}
    int findd(int x){return pa[x] = (pa[x] == x ? x : findd(pa[x]));}
    bool uni(int p , int q){
        p = findd(p) , q = findd(q);
        if(p == q) return 0;
        pa[q] = p;return 1;
    }
}disj;

bool ccw(pi a, pi b, pi c){
	int dx1 = b.first - a.first;
	int dy1 = b.second - a.second;
	int dx2 = c.first - a.first;
	int dy2 = c.second - a.second;
	return 1ll * dx1 * dy2 >= 1ll * dy1 * dx2;
}

bool cmp(const edge &aa , const edge &bb){
    return (1ll * aa.x * CUR1) + (1ll * aa.y * CUR2) < (1ll * bb.x * CUR1) + (1ll * bb.y * CUR2);
}

pi get_mst(int c1 , int c2 , int is){
    disj.init(N);
    CUR1 = c1 , CUR2 = c2;
    sort(adj , adj+M , cmp);

    pi tmp(0,0);
    for(int i=0; i<M; i++){
        if(disj.uni(adj[i].s , adj[i].e)){
            tmp.first += adj[i].x;
            tmp.second += adj[i].y;
            if(is) cout << adj[i].s << " " << adj[i].e << endl;
        }
    }
    if(1ll * mx * my > 1ll * tmp.first * tmp.second){
        mx = tmp.first  , my = tmp.second;
        mc1 = c1 , mc2 = c2;
    }


    return tmp;
}

void solve(pi u , pi l){
    pi n = get_mst(u.second - l.second , l.first - u.first , 0);
    if(!ccw(l,n,u)) solve(u,n) , solve(n,l);
}

int main(){
    cin >> N >> M;

    for(int i=0; i<M; i++) cin >> adj[i].s >> adj[i].e >> adj[i].x >> adj[i].y;

    pi upper = get_mst(1,0,0);
    pi lower = get_mst(0,1,0);

    solve(upper , lower);

    cout << mx << " " << my << endl;
    get_mst(mc1 , mc2 , 1);
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2176 KB Output is correct
2 Correct 0 ms 2176 KB Output is correct
3 Correct 0 ms 2176 KB Output is correct
4 Correct 0 ms 2176 KB Output is correct
5 Correct 0 ms 2176 KB Output is correct
6 Correct 3 ms 2176 KB Output is correct
7 Correct 3 ms 2176 KB Output is correct
8 Correct 13 ms 2176 KB Output is correct
9 Correct 0 ms 2176 KB Output is correct
10 Correct 0 ms 2176 KB Output is correct
11 Correct 0 ms 2176 KB Output is correct
12 Correct 0 ms 2176 KB Output is correct
13 Correct 0 ms 2176 KB Output is correct
14 Correct 6 ms 2176 KB Output is correct
15 Correct 3 ms 2176 KB Output is correct
16 Correct 109 ms 2176 KB Output is correct
17 Correct 103 ms 2176 KB Output is correct
18 Correct 96 ms 2176 KB Output is correct
19 Correct 839 ms 2176 KB Output is correct
20 Correct 869 ms 2176 KB Output is correct