#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize ("Ofast")
#define int long long
int n, m;
array <int, 4> e[10002];
pair <int, int> mn;
vector <pair <int, int>> ee;
struct DSU {
int sze[201], par[201];
void init () {
for (int i = 1; i <= n; i++) {
sze[i] = 1; par[i] = i;
}
}
int find (int x) {
return par[x] == x ? x : par[x] = find(par[x]);
}
bool merge (int x, int y) {
x = find(x); y = find(y);
if (x == y) return 0;
if (sze[x] > sze[y]) {
swap(x, y);
}
sze[y] += sze[x]; par[x] = y;
return 1;
}
} cur;
pair <int, int> get (int a, int b) {
sort(e + 1, e + m + 1, [&] (auto x, auto y) {
return a * x[2] + b * x[3] == a * y[2] + b * y[3] ? x[2] < y[2] : a * x[2] + b * x[3] < a * y[2] + b * y[3];
});
cur.init();
int sum1 = 0, sum2 = 0;
vector <pair <int, int>> ii;
for (int i = 1; i <= m; i++) {
if (cur.merge(e[i][0], e[i][1])) {
sum1 += e[i][2];
sum2 += e[i][3];
ii.push_back({e[i][0], e[i][1]});
}
}
if (sum1 * sum2 < mn.first * mn.second) {
mn = {sum1, sum2};
ee = ii;
}
return {sum1, sum2};
}
void recurse (pair <int, int> a, pair <int, int> b) {
//cout << a.first << " " << a.second << " || " << b.first << " " << b.second << '\n';
int x = a.second - b.second, y = a.first - b.first;
int g = __gcd(x, y);
x /= g; y /= g;
if (y < 0) {
y *= -1; x *= -1;
}
//cout << x << " " << y << '\n';
//cout << "OK\n";
if (x == 0 || y == 0) {
return;
}
x *= -1;
auto h = get(x, y);
if (h == a || h == b || (h.second - a.second) * (h.first - b.first) == (h.second - b.second) * (h.first - a.first)) {
return;
}
recurse(a, h); recurse(h, b);
}
void solve () {
cin >> n >> m;
for (int i = 1; i <= m; i++) {
for (int j = 0; j < 4; j++) {
cin >> e[i][j];
}
e[i][0]++; e[i][1]++;
}
mn = {(int)1e9, (int)1e9};
auto x = get(0, 1), y = get(1, 0);
recurse(x, y);
cout << mn.first << " " << mn.second << '\n';
for (auto [x, y] : ee) {
cout << x - 1 << " " << y - 1 << '\n';
}
}
signed main () {
ios::sync_with_stdio(0); cin.tie(0);
int tc = 1; //cin >> tc;
while (tc--) solve();
}
Compilation message
timeismoney.cpp: In function 'void solve()':
timeismoney.cpp:81:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
81 | for (auto [x, y] : ee) {
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
468 KB |
Output is correct |
| 5 |
Correct |
0 ms |
604 KB |
Output is correct |
| 6 |
Correct |
1 ms |
348 KB |
Output is correct |
| 7 |
Correct |
1 ms |
348 KB |
Output is correct |
| 8 |
Correct |
4 ms |
860 KB |
Output is correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
6 ms |
476 KB |
Output is correct |
| 15 |
Correct |
3 ms |
348 KB |
Output is correct |
| 16 |
Correct |
59 ms |
344 KB |
Output is correct |
| 17 |
Correct |
63 ms |
540 KB |
Output is correct |
| 18 |
Correct |
59 ms |
544 KB |
Output is correct |
| 19 |
Correct |
551 ms |
860 KB |
Output is correct |
| 20 |
Correct |
566 ms |
1104 KB |
Output is correct |
