oj.uz

Submission #480776

# Submission time Handle Problem Language Result Execution time Memory
480776 2021-10-18T03:30:01 Z daongocha timeismoney (balkan11_timeismoney) C++14
60 / 100
 1154 ms 976 KB 
#include <bits/stdc++.h>

#define int long long

#define fileopen(a, b) freopen(((std::string)a + ".inp").c_str(), "r", stdin); freopen(((std::string)b + ".out").c_str(), "w", stdout);
#define fileopen1(a) freopen(((std::string)a + ".inp").c_str(), "r", stdin); freopen(((std::string)a + ".out").c_str(), "w", stdout);
 
using namespace std;

const int MAXN = 205;

struct edge {
	int u, v, t, c;
};

#define ld long double
const ld EPS = 1e-9;
ld q;

ld num(edge a) {
	return a.t * q + a.c * (1e6 - q);
}

bool cmp(edge a, edge b) {
	return num(a) + EPS < num(b);
}

vector<edge> edges;
int n, m;

int dsu[MAXN];

int Find(int u) {
	if (u == dsu[u]) return u;
	return dsu[u] = Find(dsu[u]);
}

void Union(int u, int v) {
	u = Find(u), v = Find(v);
	if (u != v) dsu[v] = u;
}

int solve(ld okayge) {
	q = okayge;
	sort(edges.begin(), edges.end(), cmp);
	for (int i = 1; i <= n; i++) dsu[i] = i;
	int tott = 0, totc = 0;
	for (auto e: edges) {
		int u = e.u, v = e.v;
		if (Find(u) != Find(v)) {
			Union(u, v);
			tott += e.t;
			totc += e.c;
		}
	}
	return tott * totc;
}

void print(ld okayge) {
	q = okayge;
	sort(edges.begin(), edges.end(), cmp);
	for (int i = 1; i <= n; i++) dsu[i] = i;
	int tott = 0, totc = 0;
	for (auto e: edges) {
		int u = e.u, v = e.v;
		if (Find(u) != Find(v)) {
			Union(u, v);
			tott += e.t;
			totc += e.c;
		}
	}
	cout << tott << ' ' << totc << '\n';
	for (int i = 1; i <= n; i++) dsu[i] = i;
	for (auto e: edges) {
		int u = e.u, v = e.v;
		if (Find(u) != Find(v)) {
			Union(u, v);
			cout << u - 1 << ' ' << v - 1 << '\n';
		}
	}
}

signed main() {
	#ifndef PICHU_LOCAL_DEF
		//fileopen1("LAH");
	#endif

	cin.tie(0)->sync_with_stdio(0);

	cin >> n >> m;

	q = 0.1;

	for (int i = 1, u, v, t, c; i <= m; i++) {
		cin >> u >> v >> t >> c;
		u++; v++;
		edges.push_back({u, v, t, c});
	}

	ld l = 0, r = 1e6;
	for (int i = 1; i <= 400; i++) {
		ld lm = l + (r - l) / 3, rm = r - (r - l) / 3;
		if (solve(lm) > solve(rm)) l = rm;
		else r = lm;
	}

	print(l);
}

Subtask #1
60.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 204 KB Output is correct
2 Correct 2 ms 204 KB Output is correct
3 Correct 2 ms 204 KB Output is correct
4 Correct 4 ms 204 KB Output is correct
5 Correct 27 ms 332 KB Output is correct
6 Correct 21 ms 340 KB Output is correct
7 Correct 141 ms 420 KB Output is correct
8 Correct 925 ms 976 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 3 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Incorrect 5 ms 204 KB Output isn't correct
13 Incorrect 5 ms 204 KB Output isn't correct
14 Correct 33 ms 336 KB Output is correct
15 Incorrect 21 ms 344 KB Output isn't correct
16 Incorrect 145 ms 332 KB Output isn't correct
17 Incorrect 174 ms 332 KB Output isn't correct
18 Incorrect 144 ms 420 KB Output isn't correct
19 Incorrect 1004 ms 976 KB Output isn't correct
20 Incorrect 1154 ms 976 KB Output isn't correct