oj.uz

답안 #480757

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
480757 2021-10-18T03:09:13 Z hollwo_pelw 시간이 돈 (balkan11_timeismoney) C++17
95 / 100
 274 ms 1100 KB 
/*
// is short or still long ???
hollwo_pelw's template(short)
// Note : -Dhollwo_pelw_local
*/

#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/trie_policy.hpp>
// #include <ext/rope>

using namespace std;
// using namespace __gnu_pbds;
// using namespace __gnu_cxx;

void FAST_IO(string filein = "", string fileout = "", string fileerr = ""){
	if (fopen(filein.c_str(), "r")){
		freopen(filein.c_str(), "r", stdin);
		freopen(fileout.c_str(), "w", stdout);
#ifdef hollwo_pelw_local
		freopen(fileerr.c_str(), "w", stderr);
#endif
	}
	cin.tie(0), cout.tie(0) -> sync_with_stdio(0);
}

void Hollwo_Pelw();

signed main(){
#ifdef hollwo_pelw_local
	FAST_IO("input.inp", "output.out", "error.err");
	auto start = chrono::steady_clock::now();
#else
	FAST_IO("balkan11_timeismoney.inp", "balkan11_timeismoney.out");
#endif
	int testcases = 1;
	// cin >> testcases;
	for (int test = 1; test <= testcases; test++){
		// cout << "Case #" << test << ": ";
		Hollwo_Pelw();
	}
#ifdef hollwo_pelw_local
	auto end = chrono::steady_clock::now();
	cout << "\nExcution time : " << chrono::duration_cast<chrono::milliseconds> (end - start).count() << "[ms]" << endl;
#endif
	return 0;
}

const int N = 205;

struct edge {
	int u, v, t, c;
	long double val;
	edge (int _u = 0, int _v = 0, int _t = 0, int _c = 0, long double _val = 0)
		: u(_u), v(_v), t(_t), c(_c), val(_val) {}
	bool operator < (const edge &o) const {
		return val < o.val + 1e-9;
	}
};

vector<edge> ed;
vector<pair<int, int>> choose;

int n, m, par[N];

struct disjoint_set {
	disjoint_set(int _n = N) {
		iota(par, par + n, 0);
	}

	inline int find(int u) {
		return par[u] = par[u] == u ? u : find(par[u]);
	}
	
	inline bool merge(int u, int v) {
		if ((u = find(u)) == (v = find(v)))
			return 0;
		return par[u] = v, 1;
	}
};

inline long long calc(const long double& st, bool print = 0) {
	for (auto &[u, v, t, c, val] : ed)
		val = t * st + c * (1e5 - st);

	sort(ed.begin(), ed.end());

	disjoint_set dsu(n);
	int tott = 0, totc = 0;
	
	for (auto [u, v, t, c, val] : ed) {
		if (dsu.merge(u, v)) {
			tott += t, totc += c;
			if (print)
				choose.emplace_back(u, v);
		}
	}

	if (print) {
		cout << tott << ' ' << totc << '\n';
		for (auto [u, v] : choose)
			cout << u << ' ' << v << '\n';
	}
	return tott * totc;
}

void Hollwo_Pelw() {
	cin >> n >> m;

	ed.resize(m);
	for (auto &[u, v, t, c, val] : ed)
		cin >> u >> v >> t >> c;
	
	long double l = 0, r = 1e5;
	for (int _ = 200; _ --; ) {
		long double lm = (l + l + r) / 3, rm = (l + r + r) / 3;
		(calc(lm) < calc(rm) ? r = rm : l = lm);
	}

	calc(l, 1);
}

Compilation message

timeismoney.cpp: In function 'void FAST_IO(std::string, std::string, std::string)':
timeismoney.cpp:18:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |   freopen(filein.c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
timeismoney.cpp:19:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |   freopen(fileout.c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
95.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 324 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 2 ms 204 KB Output is correct
5 Correct 9 ms 328 KB Output is correct
6 Correct 9 ms 332 KB Output is correct
7 Correct 63 ms 344 KB Output is correct
8 Runtime error 4 ms 1100 KB Execution killed with signal 11
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 2 ms 204 KB Output is correct
13 Correct 2 ms 204 KB Output is correct
14 Correct 8 ms 204 KB Output is correct
15 Correct 7 ms 332 KB Output is correct
16 Correct 47 ms 332 KB Output is correct
17 Correct 43 ms 332 KB Output is correct
18 Correct 46 ms 332 KB Output is correct
19 Correct 274 ms 588 KB Output is correct
20 Correct 267 ms 620 KB Output is correct