/*************************************
* author: marvinthang *
* created: 18.07.2023 14:10:28 *
*************************************/
#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define left ___left
#define right ___right
#define TIME (1.0 * clock() / CLOCKS_PER_SEC)
#define MASK(i) (1LL << (i))
#define BIT(x, i) ((x) >> (i) & 1)
#define __builtin_popcount __builtin_popcountll
#define ALL(v) (v).begin(), (v).end()
#define REP(i, n) for (int i = 0, _n = (n); i < _n; ++i)
#define REPD(i, n) for (int i = (n); i--; )
#define FOR(i, a, b) for (int i = (a), _b = (b); i < _b; ++i)
#define FORD(i, b, a) for (int i = (b), _a = (a); --i >= _a; )
#define FORE(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i)
#define FORDE(i, b, a) for (int i = (b), _a = (a); i >= _a; --i)
#define scan_op(...) istream & operator >> (istream &in, __VA_ARGS__ &u)
#define print_op(...) ostream & operator << (ostream &out, const __VA_ARGS__ &u)
#ifdef LOCAL
#include "debug.h"
#else
#define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
#define DB(...) 23
#define db(...) 23
#define debug(...) 23
#endif
template <class U, class V> scan_op(pair <U, V>) { return in >> u.first >> u.second; }
template <class T> scan_op(vector <T>) { for (size_t i = 0; i < u.size(); ++i) in >> u[i]; return in; }
template <class U, class V> print_op(pair <U, V>) { return out << '(' << u.first << ", " << u.second << ')'; }
template <size_t i, class T> ostream & print_tuple_utils(ostream &out, const T &tup) { if constexpr(i == tuple_size<T>::value) return out << ")"; else return print_tuple_utils<i + 1, T>(out << (i ? ", " : "(") << get<i>(tup), tup); }
template <class ...U> print_op(tuple<U...>) { return print_tuple_utils<0, tuple<U...>>(out, u); }
template <class Con, class = decltype(begin(declval<Con>()))> typename enable_if <!is_same<Con, string>::value, ostream&>::type operator << (ostream &out, const Con &con) { out << '{'; for (__typeof(con.begin()) it = con.begin(); it != con.end(); ++it) out << (it == con.begin() ? "" : ", ") << *it; return out << '}'; }
struct Point {
long long x, y;
Point(long long x = 0, long long y = 0): x(x), y(y) {}
friend scan_op(Point) { return in >> u.x >> u.y; }
friend print_op(Point) { return out << make_pair(u.x, u.y); }
bool operator < (const Point &other) const { return make_pair(x, y) < make_pair(other.x, other.y); }
Point & operator += (const Point &other) {x += other.x; y += other.y; return *this; }
Point & operator -= (const Point &other) { x -= other.x; y -= other.y; return *this; }
Point operator + (const Point &other) const { return Point(*this) += other; }
Point operator - (const Point &other) const { return Point(*this) -= other; }
long long dot(const Point &other) const { return x * other.x + y * other.y; }
long long cross(const Point &other) const { return x * other.y - y * other.x; }
long long norm(void) const { return x * x + y * y; }
long long cross(const Point &a, const Point &b) const { return (a - *this).cross(b - *this); }
};
int sgn(long long val) { return val < 0 ? -1 : !!val; }
int ccw(const Point &a, const Point &b, const Point &c) { return sgn(a.cross(b, c)); }
struct Edge {
int u, v, t, c;
};
struct DisjointSet {
int n, *lab = nullptr;
DisjointSet(int _n = 0) {
resize(_n);
}
void reset(void) {
memset(lab, -1, (n + 1) * sizeof(int));
}
void resize(int _n) {
if (lab != nullptr) delete[] lab;
n = _n;
lab = new int[n + 1];
reset();
}
int find(int u) {
assert(u <= n);
return lab[u] < 0 ? u : lab[u] = find(lab[u]);
}
bool connected(int u, int v) { return find(u) == find(v); }
bool isRoot(int u) { return lab[u] < 0; }
int size(int u) { return -lab[find(u)]; }
bool join(int u, int v) {
if ((u = find(u)) == (v = find(v))) return false;
if (lab[u] > lab[v]) swap(u, v);
lab[u] += lab[v];
lab[v] = u;
return true;
}
};
using DSU = DisjointSet;
// end of template
const int MAX = 1e4 + 4;
int N, M;
Edge edges[MAX];
void init(void) {
cin >> N >> M;
REP(i, M) cin >> edges[i].u >> edges[i].v >> edges[i].t >> edges[i].c;
}
Point res(1e9, 1e9);
int pa, pb;
Point solve_mst(int a, int b, bool trace = false) {
sort(edges, edges + M, [&] (Edge x, Edge y) { return x.t * a + x.c * b < y.t * a + y.c * b; });
DSU dsu(N);
Point p;
REP(i, M) if (dsu.join(edges[i].u, edges[i].v)) {
if (trace) cout << edges[i].u << ' ' << edges[i].v << '\n';
p += Point(edges[i].t, edges[i].c);
}
if (res.x * res.y > p.x * p.y) {
res = p;
pa = a;
pb = b;
}
return p;
}
void solve(Point l, Point r) {
if (l.x == r.x || l.y == r.y) return;
Point m = solve_mst(l.y - r.y, r.x - l.x);
if (!ccw(l, m, r)) return;
solve(l, m);
solve(m, r);
}
void process(void) {
solve(solve_mst(1, 0), solve_mst(0, 1));
cout << res.x << ' ' << res.y << '\n';
solve_mst(pa, pb, true);
}
int main(void) {
ios_base::sync_with_stdio(false); cin.tie(nullptr); // cout.tie(nullptr);
file("D");
init();
process();
cerr << "Time elapsed: " << TIME << " s.\n";
return (0^0);
}
Compilation message
timeismoney.cpp: In function 'int main()':
timeismoney.cpp:30:61: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
30 | #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
timeismoney.cpp:155:2: note: in expansion of macro 'file'
155 | file("D");
| ^~~~
timeismoney.cpp:30:94: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
30 | #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
timeismoney.cpp:155:2: note: in expansion of macro 'file'
155 | file("D");
| ^~~~
| # |
결과 |
실행 시간 |
메모리 |
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 |
0 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
3 ms |
476 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
0 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 |
404 KB |
Output is correct |
| 15 |
Correct |
2 ms |
468 KB |
Output is correct |
| 16 |
Correct |
41 ms |
840 KB |
Output is correct |
| 17 |
Correct |
41 ms |
792 KB |
Output is correct |
| 18 |
Correct |
40 ms |
820 KB |
Output is correct |
| 19 |
Correct |
343 ms |
1176 KB |
Output is correct |
| 20 |
Correct |
362 ms |
1112 KB |
Output is correct |
