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Submission #223934

# Submission time Handle Problem Language Result Execution time Memory
223934 2020-04-16T21:42:22 Z super_j6 timeismoney (balkan11_timeismoney) C++14
50 / 100
 648 ms 512 KB 
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>
using namespace std;
#define endl '\n'
#define ll long long
#define pi pair<ll, int>
#define f first
#define s second

const int maxn = 200, maxm = 10000;
int n, m;
int it[maxm], u[maxm], v[maxm], a[maxm], b[maxm];
int par[maxn], rnk[maxn];
vector<pi> ans;

int find(int x){
	return x == par[x] ? x : par[x] = find(par[x]);
}

pi mst(ll x, ll y, bool t = 0){
	for(int i = 0; i < n; i++) par[i] = i, rnk[i] = 0;
	sort(it, it + m, [&](int i, int j){
		return a[i] * x + b[i] * y < a[j] * x + b[j] * y;
	});

	pi ret = {0, 0};
	for(int i = 0; i < m; i++){
		int j = it[i];
		int w = find(u[j]), z = find(v[j]);
		if(w != z){
			ret.f += a[j], ret.s += b[j];
			if(t) ans.push_back({u[j], v[j]});
			if(rnk[w] < rnk[z]) swap(w, z);
			rnk[w] += rnk[w] == rnk[z];
			par[z] = w;
		}
	}
	
	return ret;
}

bool operator<(pi x, pi y){
	return x.f * x.s < y.f * y.s;
}

pi solve(pi l, pi r){
	pi p = mst(r.s - l.s, l.f - r.f);
	if((p.f - l.f) * (r.s - l.s) == (p.s - l.s) * (r.f - l.f)) return min(l, r);
	return min(solve(l, p), solve(p, r));
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	
	cin >> n >> m;
	
	for(int i = 0; i < m; i++){
		cin >> u[i] >> v[i] >> a[i] >> b[i];
		it[i] = i;
	}
	
	pi ret = solve(mst(0, 1), mst(1, 0));
	ret = mst(ret.s, ret.f, 1);
	
	cout << ret.f << " " << ret.s << endl;
	for(pi i : ans) cout << i.f << " " << i.s << endl;
	
	return 0;
}

Subtask #1
50.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 10 ms 512 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Incorrect 5 ms 384 KB Output isn't correct
11 Correct 5 ms 384 KB Output is correct
12 Incorrect 5 ms 384 KB Output isn't correct
13 Incorrect 5 ms 384 KB Output isn't correct
14 Incorrect 8 ms 384 KB Output isn't correct
15 Incorrect 7 ms 384 KB Output isn't correct
16 Incorrect 77 ms 384 KB Output isn't correct
17 Incorrect 84 ms 384 KB Output isn't correct
18 Incorrect 71 ms 384 KB Output isn't correct
19 Incorrect 627 ms 512 KB Output isn't correct
20 Incorrect 648 ms 504 KB Output isn't correct