oj.uz

Submission #640870

# Submission time Handle Problem Language Result Execution time Memory
640870 2022-09-15T12:17:20 Z SanguineChameleon timeismoney (balkan11_timeismoney) C++14
100 / 100
 535 ms 684 KB 
// BEGIN BOILERPLATE CODE

#include <bits/stdc++.h>
using namespace std;

#ifdef KAMIRULEZ
	const bool kami_loc = true;
	const long long kami_seed = 69420;
#else
	const bool kami_loc = false;
	const long long kami_seed = chrono::steady_clock::now().time_since_epoch().count();
#endif

const string kami_fi = "kamirulez.inp";
const string kami_fo = "kamirulez.out";
mt19937_64 kami_gen(kami_seed);

long long rand_range(long long rmin, long long rmax) {
	uniform_int_distribution<long long> rdist(rmin, rmax);
	return rdist(kami_gen);
}

void file_io(string fi, string fo) {
	if (fi != "" && (!kami_loc || fi == kami_fi)) {
		freopen(fi.c_str(), "r", stdin);
	}
	if (fo != "" && (!kami_loc || fo == kami_fo)) {
		freopen(fo.c_str(), "w", stdout);
	}
}

void set_up() {
	if (kami_loc) {
		file_io(kami_fi, kami_fo);
	}
	ios_base::sync_with_stdio(0);
	cin.tie(0);
}

void just_do_it();

void just_exec_it() {
	if (kami_loc) {
		auto pstart = chrono::steady_clock::now();
		just_do_it();
		auto pend = chrono::steady_clock::now();
		long long ptime = chrono::duration_cast<chrono::milliseconds>(pend - pstart).count();
		string bar(50, '=');
		cout << '\n' << bar << '\n';
		cout << "Time: " << ptime << " ms" << '\n';
	}
	else {
		just_do_it();
	}
}

int main() {
	set_up();
	just_exec_it();
	return 0;
}

// END BOILERPLATE CODE

// BEGIN MAIN CODE

const int ms = 1e4 + 20;
const int st = 2e2 + 20;
int de[st];
int par[st];
long long res = (long long)1e18 + 20;
long long fa;
long long fb;
int n, m;

struct point {
	long long x, y;
};

point fp;

int root(int u) {
	if (par[u] == -1) {
		return u;
	}
	return root(par[u]);
}

bool update(int u, int v) {
	int ru = root(u);
	int rv = root(v);
	if (ru == rv) {
		return false;
	}
	if (de[ru] > de[rv]) {
		swap(ru, rv);
	}
	par[ru] = rv;
	if (de[ru] == de[rv]) {
		de[rv]++;
	}
	return true;
}

struct edge {
	int u, v;
	long long x, y;
};

struct cmp {
	long long pa;
	long long pb;
	cmp(long long a, long long b) {
		pa = a;
		pb = b;
	}
	bool operator()(edge e1, edge e2) {
		return e1.x * pa + e1.y * pb < e2.x * pa + e2.y * pb;
	}
};

edge e[ms];

point mst(long long a, long long b, bool f = false) {
	long long sx = 0;
	long long sy = 0;
	for (int i = 0; i < n; i++) {
		de[i] = 0;
		par[i] = -1;
	}
	sort(e, e + m, cmp(a, b));
	for (int i = 0; i < m; i++) {
		int u = e[i].u;
		int v = e[i].v;
		if (update(u, v)) {
			if (f) {
				cout << u << " " << v << '\n';
			}
			sx += e[i].x;
			sy += e[i].y;
		}
	}
	long long cr = sx * sy;
	if (cr < res) {
		res = cr;
		fp = point({sx, sy});
		fa = a;
		fb = b;
	}
	return point({sx, sy});
}

void solve(point p1, point p2) {
	if (p1.x == p2.x || p1.y == p2.y) {
		return;
	}
	long long dx = p2.x - p1.x;
	long long dy = p1.y - p2.y;
	point p3 = mst(dy, dx);
	if ((p1.y - p2.y) * (p3.x - p1.x) == (p1.y - p3.y) * (p2.x - p1.x)) {
		return;
	}
	solve(p1, p3);
	solve(p3, p2);
}

void just_do_it() {
	cin >> n >> m;
	for (int i = 0; i < m; i++) {
		cin >> e[i].u >> e[i].v >> e[i].x >> e[i].y;
	}
	point p1 = mst(1, 0);
	point p2 = mst(0, 1);
	solve(p1, p2);
	cout << fp.x << " " << fp.y << '\n';
	mst(fa, fb, 1);
}

// END MAIN CODE

Compilation message

timeismoney.cpp: In function 'void file_io(std::string, std::string)':
timeismoney.cpp:25:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |   freopen(fi.c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
timeismoney.cpp:28:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |   freopen(fo.c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 4 ms 596 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 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 4 ms 340 KB Output is correct
15 Correct 3 ms 332 KB Output is correct
16 Correct 62 ms 340 KB Output is correct
17 Correct 64 ms 388 KB Output is correct
18 Correct 59 ms 340 KB Output is correct
19 Correct 513 ms 684 KB Output is correct
20 Correct 535 ms 680 KB Output is correct