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Submission #726883

# Submission time Handle Problem Language Result Execution time Memory
726883 2023-04-19T13:39:56 Z josanneo22 timeismoney (balkan11_timeismoney) C++17
100 / 100
 66 ms 952 KB 
#include <bits/stdc++.h>
#define sz(x) ((int)x.size())
#define fi first
#define se second
#define pb push_back
using namespace std;
typedef long long ll;
typedef long double ld;
struct edge {
	int u, v;
	int v1, v2;
	ld val;
	bool operator<(const edge& b)const {
		return val < b.val;
	}
};
const ld R = 1e5;
int n, m;
int par[210];
vector<edge> e;

int pn(int u) { return u == par[u] ? u : (par[u] = pn(par[u])); }

void us(int a, int b) {
	a = pn(a), b = pn(b);
	par[b] = a;
}
pair<ll, vector<edge>> f(ld x) {
	for (int i = 0; i <= n; i++)par[i] = i;
	for (auto& it : e)it.val = it.v1 * x + it.v2 * (R - x);
	sort(e.begin(), e.end());
	ll s1 = 0, s2 = 0;
	vector<edge> r;
	for (auto& it : e) {
		if (pn(it.u) != pn(it.v)) {
			us(it.u, it.v);
			s1 += it.v1;
			s2 += it.v2;
			r.pb(it);
		}
	}
	return { s1 * s2,r };
}
int main() {
	ios::sync_with_stdio(stdin); cin.tie(0);
	cin >> n >> m;
	for (int i = 0; i < m; i++) {
		int x, y, v1, v2;
		cin >> x >> y >> v1 >> v2;
		e.pb({ x,y,v1,v2 });
	}
	ld lo = 0, hi = R;
	while (abs(lo - hi) > 1e-4) {
		ld m1 = (lo * 2 + hi) / 3;
		ld m2 = (lo + hi * 2) / 3;
		if (f(m1).fi < f(m2).fi) hi = m2;
		else lo = m1;
	}
	vector<edge> r = f(lo).se;
	ll s1 = 0, s2 = 0;
	for (auto& it : r) {
		s1 += it.v1;
		s2 += it.v2;
	}
	cout << s1 << ' ' << s2 << '\n';
	for (auto& it : r)cout << it.u << ' ' << it.v << '\n';
	return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 2 ms 212 KB Output is correct
6 Correct 2 ms 212 KB Output is correct
7 Correct 10 ms 340 KB Output is correct
8 Correct 48 ms 848 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 3 ms 332 KB Output is correct
15 Correct 2 ms 212 KB Output is correct
16 Correct 12 ms 340 KB Output is correct
17 Correct 12 ms 424 KB Output is correct
18 Correct 11 ms 340 KB Output is correct
19 Correct 65 ms 848 KB Output is correct
20 Correct 66 ms 952 KB Output is correct