oj.uz

답안 #88565

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
88565 2018-12-06T15:59:50 Z memikakizaki 시간이 돈 (balkan11_timeismoney) C++14
100 / 100
 1125 ms 1148 KB 
/**
 * code generated by JHelper
 * More info: https://github.com/AlexeyDmitriev/JHelper
 * @author szawinis
 */
 
#include <iostream>
#include <fstream>
 
#include <bits/stdc++.h>
using namespace std;
#define all(a) begin(a), end(a)
#define csz(a) (int) a.size()
#define load(a, v) fill(begin(a), end(a), v)
#define load_mem(a, v) memset(a, v, sizeof(a));
#define iostream_optimize() ios::sync_with_stdio(false); cin.tie(0);
#define long long long
const long MOD = 1e9+7, LINF = 1e18 + 1e16;
const int INF = 1e9+1;
const double EPS = 1e-10;
const int dx[4] = {-1, 0, 1, 0}, dy[4] = {0, 1, 0, -1};
 
struct edge {
	int u, v;
	long t, c;
};
 
class TimeIsMoney {
public:
	int n, m, cnt;
	vector<edge> edges;
	pair<long, pair<long, long> > res = {LINF, {LINF, LINF}};
	istream* cin_ptr;
	ostream* cout_ptr;
 
	void tracer(long T, long C, vector<edge> trace_ls) {
		ostream& cout = *cout_ptr;
		cout << T << ' ' << C << '\n';
		for(edge e: trace_ls) cout << e.u << ' ' << e.v << '\n';
	}
 
	pair<long, long> gen_mst(long a, long b, bool trace) {
      	++cnt;
      	assert(cnt <= 1000);
		vector<edge> ls = edges, trace_ls;
		sort(ls.begin(), ls.end(), [a, b] (auto x, auto y) { return x.t * a + x.c * b < y.t * a + y.c * b; });
		vector<int> dsu(n, -1);
		function<int(int)> root;
		root = [&root, &dsu] (int v) { return (dsu[v] < 0 ? v : dsu[v] = root(dsu[v])); };
		pair<long, long> ret = {0, 0};
 
		for(edge e: ls) {
			int u = root(e.u), v = root(e.v);
			if (u == v) continue;
			dsu[u] += dsu[v];
			dsu[v] = u;
			ret.first += e.t;
			ret.second += e.c;
			if(trace) trace_ls.push_back(e);
		}
 
		res = min(make_pair(ret.first * ret.second, make_pair(a, b)), res);
		if(trace) tracer(ret.first, ret.second, trace_ls);
 
		return ret;
	}
 
	bool ccw(pair<long, long> p1, pair<long, long> p2, pair<long, long> p3) {
		pair<long, long> v1 = {p2.first - p1.first, p2.second - p1.second};
		pair<long, long> v2 = {p3.first - p2.first, p3.second - p2.second};
		long cross = v1.first * v2.second - v1.second * v2.first;
		return cross > 0;
	}
 
	void rec(pair<long, long> p1, pair<long, long> p2) {
		res.first = min(p1.first * p1.second, res.first);
		res.first = min(p2.first * p2.second, res.first);
		long b = abs(p2.first - p1.first);
		long a = abs(p2.second - p1.second);
		auto opt = gen_mst(a, b, 0);
		if(ccw(p1, opt, p2)) rec(p1, opt), rec(opt, p2);
	}
 
	void solve(istream& in, ostream& out) {
      	cnt = 0;
		cin_ptr = &in;
		cout_ptr = &out;
		istream& cin = *cin_ptr;
		ostream& cout = *cout_ptr;
		cin >> n >> m;
		for(int i = 0; i < m; i++) {
			edge e;
			cin >> e.u >> e.v >> e.t >> e.c;
			edges.push_back(e);
		}
		auto leftmost = gen_mst(1, 0, 0);
		auto bottommost = gen_mst(0, 1, 0);
		rec(leftmost, bottommost);
		gen_mst(res.second.first, res.second.second, 1);
	}
};
 
int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	TimeIsMoney solver;
	std::istream& in(std::cin);
	std::ostream& out(std::cout);
	solver.solve(in, out);
	return 0;
}

Compilation message

timeismoney.cpp: In member function 'void TimeIsMoney::solve(std::istream&, std::ostream&)':
timeismoney.cpp:89:12: warning: unused variable 'cout' [-Wunused-variable]
   ostream& cout = *cout_ptr;
            ^~~~

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 440 KB Output is correct
3 Correct 2 ms 448 KB Output is correct
4 Correct 2 ms 464 KB Output is correct
5 Correct 2 ms 464 KB Output is correct
6 Correct 2 ms 464 KB Output is correct
7 Correct 4 ms 592 KB Output is correct
8 Correct 10 ms 1012 KB Output is correct
9 Correct 2 ms 1012 KB Output is correct
10 Correct 2 ms 1012 KB Output is correct
11 Correct 2 ms 1012 KB Output is correct
12 Correct 2 ms 1012 KB Output is correct
13 Correct 2 ms 1012 KB Output is correct
14 Correct 10 ms 1012 KB Output is correct
15 Correct 7 ms 1012 KB Output is correct
16 Correct 135 ms 1012 KB Output is correct
17 Correct 145 ms 1012 KB Output is correct
18 Correct 135 ms 1012 KB Output is correct
19 Correct 1098 ms 1148 KB Output is correct
20 Correct 1125 ms 1148 KB Output is correct