oj.uz

Submission #586986

# Submission time Handle Problem Language Result Execution time Memory
586986 2022-07-01T07:37:55 Z 8e7 Reconstruction Project (JOI22_reconstruction) C++17
42 / 100
 5000 ms 206600 KB 
//Challenge: Accepted
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
using namespace std;
#ifdef zisk
void debug(){cout << endl;}
template<class T, class ... U> void debug(T a, U ... b){cout << a << " ", debug(b...);}
template<class T> void pary(T l, T r) {
	while (l != r) cout << *l << " ", l++;
	cout << endl;
}
#else
#define debug(...) 0
#define pary(...) 0
#endif
#define ll long long
#define maxn 505
#define pii pair<int, int>
#define ff first
#define ss second
#define io ios_base::sync_with_stdio(0);cin.tie(0);
const int inf = 1<<30;
struct edge{
	int u, v, w;
	edge(){u = v = w = 0;}
	edge(int a, int b, int c){u = a, v = b, w = c;}
};

inline void del(vector<pii> &v, pii x) {
	v.erase(find(v.begin(), v.end(), x));
}
inline void del(vector<int> &v, int x) {
	v.erase(find(v.begin(), v.end(), x));
}
struct graph{
	vector<int> ed; //first < second
	vector<pii> adj[maxn];
	pii best;
	int bid, t;
	void init(int n) {
		ed.clear();
		t = 0;
		for (int i = 0;i <= n;i++) adj[i].clear();
	}
	bool getpath(int n, int par, int goal) {
		if (n == goal) return 1;
		for (auto [v, id]:adj[n]) {
			if (v != par && getpath(v, n, goal)) {
				if (id < bid) {
					bid = id;
					best = {n, v};
				}
				return 1;
			}
		}
		return 0;
	}
	void upd(int u, int v) {
		bid = inf;
		t++;
		if (u > v) swap(u, v);
		if (getpath(u, 0, v)) {
			if (best.ff > best.ss) swap(best.ff, best.ss);	
			del(adj[best.ff], make_pair(best.ss, bid));
			del(adj[best.ss], make_pair(best.ff, bid));
			del(ed, bid);
		}
		adj[u].push_back({v, t});
		adj[v].push_back({u, t});
		ed.push_back(t);
	}
} g;
vector<int> tree[100005];


struct DSU{
	int par[maxn], siz[maxn];	
	void init(int n) {
		for (int i = 1;i <= n;i++) par[i] = i, siz[i] = 1;
	}
	int find(int a) {
		return a == par[a] ? a : (par[a] = find(par[a]));
	}
	bool Union(int a, int b) {
		a = find(a), b = find(b);
		if (a == b) return 0;
		if (siz[a] < siz[b]) par[a] = b;
		else par[b] = a;
		return 1;
	}
} dsu;
int main() {
	io
	int n, m;
	cin >> n >> m;
	vector<edge> ed;
	for (int i = 0;i < m;i++) {
		int u, v, w;
		cin >> u >> v >> w;
		ed.push_back(edge(u, v, w));	
	}
	sort(ed.begin(), ed.end(), [&] (edge x, edge y){return x.w < y.w;});

	int q;
	cin >> q;
	vector<int> que(q);
	for (int i = 0;i < q;i++) {
		cin >> que[i];
	}
	//for (int i = m - 1;i >= 0;i--) debug(ed[i].u, ed[i].v, ed[i].w);

	g.init(n);
	for (int i = m - 1;i >= 0;i--) {
		g.upd(ed[i].u, ed[i].v);
		tree[i] = g.ed;
	}
	g.init(n);
	int ind = 0;
	auto answer = [&] (int L, int id) {
		while (ind < q && que[ind] < L) {
			ll ans = 0;
			vector<int> &lef = g.ed, &rig = tree[id];
			dsu.init(n);
			int p = (int)rig.size() - 1;

			auto addedge = [&] (edge &e) {
				if (dsu.Union(e.u, e.v)) ans += abs(e.w - que[ind]);
			};
			for (int i = (int)lef.size()-1;i >= 0;i--) {
				while (p >= 0 && abs(ed[m-rig[p]].w-que[ind]) < abs(ed[lef[i]-1].w-que[ind])) {
					addedge(ed[m-rig[p]]);
					p--;
				}
				addedge(ed[lef[i]-1]);
			}
			while (p >= 0) {
				addedge(ed[m-rig[p]]);
				p--;
			}
			cout << ans << "\n";	
			ind++;
		}
	};
	for (int i = 0;i < m;i++) {	
		answer(ed[i].w, i);
		g.upd(ed[i].u, ed[i].v);
	}
	answer(inf, m);
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 1 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 1 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 1 ms 2644 KB Output is correct
20 Correct 1315 ms 200508 KB Output is correct
21 Correct 773 ms 190124 KB Output is correct
22 Correct 1097 ms 198420 KB Output is correct
23 Correct 1195 ms 199964 KB Output is correct
24 Correct 1093 ms 200320 KB Output is correct
25 Correct 1224 ms 200524 KB Output is correct
26 Correct 1276 ms 200560 KB Output is correct
27 Correct 1291 ms 200456 KB Output is correct
28 Correct 1267 ms 200512 KB Output is correct
29 Correct 1307 ms 200580 KB Output is correct
30 Correct 1515 ms 200676 KB Output is correct
31 Correct 1369 ms 200536 KB Output is correct
32 Correct 1311 ms 200592 KB Output is correct
33 Correct 1307 ms 200572 KB Output is correct
34 Correct 1282 ms 200636 KB Output is correct
35 Correct 1265 ms 200612 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2600 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Execution timed out 5055 ms 206600 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 1 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 1 ms 2644 KB Output is correct
20 Execution timed out 5081 ms 13216 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 1 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 1 ms 2644 KB Output is correct
20 Correct 1315 ms 200508 KB Output is correct
21 Correct 773 ms 190124 KB Output is correct
22 Correct 1097 ms 198420 KB Output is correct
23 Correct 1195 ms 199964 KB Output is correct
24 Correct 1093 ms 200320 KB Output is correct
25 Correct 1224 ms 200524 KB Output is correct
26 Correct 1276 ms 200560 KB Output is correct
27 Correct 1291 ms 200456 KB Output is correct
28 Correct 1267 ms 200512 KB Output is correct
29 Correct 1307 ms 200580 KB Output is correct
30 Correct 1515 ms 200676 KB Output is correct
31 Correct 1369 ms 200536 KB Output is correct
32 Correct 1311 ms 200592 KB Output is correct
33 Correct 1307 ms 200572 KB Output is correct
34 Correct 1282 ms 200636 KB Output is correct
35 Correct 1265 ms 200612 KB Output is correct
36 Correct 1934 ms 200772 KB Output is correct
37 Correct 1262 ms 191428 KB Output is correct
38 Correct 1677 ms 198404 KB Output is correct
39 Correct 1752 ms 200292 KB Output is correct
40 Correct 1714 ms 200800 KB Output is correct
41 Correct 2059 ms 200744 KB Output is correct
42 Correct 1947 ms 200896 KB Output is correct
43 Correct 1966 ms 200968 KB Output is correct
44 Correct 1749 ms 200832 KB Output is correct
45 Correct 1535 ms 200988 KB Output is correct
46 Correct 1937 ms 200752 KB Output is correct
47 Correct 1948 ms 200892 KB Output is correct
48 Correct 1947 ms 200888 KB Output is correct
49 Correct 1942 ms 200888 KB Output is correct
50 Correct 1449 ms 200848 KB Output is correct
51 Correct 1621 ms 201008 KB Output is correct

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 1 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 1 ms 2644 KB Output is correct
20 Correct 1315 ms 200508 KB Output is correct
21 Correct 773 ms 190124 KB Output is correct
22 Correct 1097 ms 198420 KB Output is correct
23 Correct 1195 ms 199964 KB Output is correct
24 Correct 1093 ms 200320 KB Output is correct
25 Correct 1224 ms 200524 KB Output is correct
26 Correct 1276 ms 200560 KB Output is correct
27 Correct 1291 ms 200456 KB Output is correct
28 Correct 1267 ms 200512 KB Output is correct
29 Correct 1307 ms 200580 KB Output is correct
30 Correct 1515 ms 200676 KB Output is correct
31 Correct 1369 ms 200536 KB Output is correct
32 Correct 1311 ms 200592 KB Output is correct
33 Correct 1307 ms 200572 KB Output is correct
34 Correct 1282 ms 200636 KB Output is correct
35 Correct 1265 ms 200612 KB Output is correct
36 Correct 2 ms 2644 KB Output is correct
37 Correct 2 ms 2600 KB Output is correct
38 Correct 2 ms 2644 KB Output is correct
39 Execution timed out 5055 ms 206600 KB Time limit exceeded
40 Halted 0 ms 0 KB -