oj.uz

Submission #311825

# Submission time Handle Problem Language Result Execution time Memory
311825 2020-10-11T20:27:50 Z YJU Making Friends on Joitter is Fun (JOI20_joitter2) C++14
100 / 100
 1116 ms 64504 KB 
#include<bits/stdc++.h>
using namespace std;
 
#define fast ios::sync_with_stdio(false); cin.tie(0);
#define fi first
#define se second
#define all(v) (v).begin(), (v).end()
#define em emplace
#define eb emplace_back
#define mp make_pair
 
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll INF = 1e18;
const int inf = 1e9;
const ll Mod = 1e9 + 7;
 
int n, m;
int a, b;
int p[100010];
ll sz[100010];
set<int> in[100010], out[100010], c[100010];
ll ans;
vector<pii> q;
 
int Find(int a) {
	return p[a] = a == p[a] ? a : Find(p[a]);
}
 
void Union(int a, int b) {
	a = Find(a);
	b = Find(b);
	if(a == b) return;
 
	if(sz[a] < sz[b]) swap(a, b);
 
	ans -= sz[a] * (sz[a]-1) + sz[b] * (sz[b] - 1);
	ans -= sz[a] * in[a].size();
	ans -= sz[b] * in[b].size();
 
	p[b] = a;
	sz[a] += sz[b];
	sz[b] = 0;
 
	ans += sz[a] * (sz[a] - 1);
 
	for(auto i : out[b]) {
		if(Find(i) == a) continue;
 
		out[a].insert(Find(i));
		
		if(out[Find(i)].find(a) != out[Find(i)].end()) {
			q.eb(a, Find(i));
		}
	}
	out[b].clear();
 
	for(auto i : in[b]) {
		if(Find(i) == a) continue;
 
		in[a].insert(i);
		out[Find(i)].insert(a);
 
		if(out[a].find(Find(i)) != out[a].end()) {
			q.eb(a, Find(i));
		}
	}
	in[b].clear();
 
	vector<int> v;
 
	for(auto i : c[b]) {
		if(in[a].find(i) != in[a].end()) v.eb(i);
 
		c[a].insert(i);
	}
 
	for(auto i : v) {
		in[a].erase(i);
	}
 
	ans += sz[a] * in[a].size();
}
 
int main() {
	fast;
 
	cin >> n >> m;
 
	for(int i=1; i<=n; i++)
		p[i] = i, sz[i] = 1, c[i].insert(i);
 
	for(int i=1; i<=m; i++) {
		cin >> a >> b;
 
		if(Find(a) == Find(b) || in[Find(b)].find(a) != in[Find(b)].end()) {
			cout << ans << "\n";
			continue;
		}
 
		in[Find(b)].insert(a);
		out[Find(a)].insert(Find(b));
		ans += sz[Find(b)];
 
		if(out[Find(b)].find(Find(a)) != out[Find(b)].end()) {
			q.eb(a, b);
		}
 
		while(q.size()) {
			auto x = q.back();
			q.pop_back();
 
			Union(x.fi, x.se);
		}
 
		cout << ans << "\n";
	}
 
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 10 ms 14464 KB Output is correct
4 Correct 10 ms 14464 KB Output is correct
5 Correct 10 ms 14464 KB Output is correct
6 Correct 10 ms 14404 KB Output is correct
7 Correct 11 ms 14464 KB Output is correct
8 Correct 11 ms 14464 KB Output is correct
9 Correct 11 ms 14464 KB Output is correct
10 Correct 10 ms 14464 KB Output is correct
11 Correct 10 ms 14464 KB Output is correct
12 Correct 11 ms 14464 KB Output is correct
13 Correct 10 ms 14464 KB Output is correct
14 Correct 10 ms 14464 KB Output is correct
15 Correct 10 ms 14464 KB Output is correct
16 Correct 10 ms 14464 KB Output is correct
17 Correct 10 ms 14464 KB Output is correct
18 Correct 10 ms 14464 KB Output is correct
19 Correct 10 ms 14464 KB Output is correct
20 Correct 10 ms 14464 KB Output is correct
21 Correct 13 ms 14464 KB Output is correct
22 Correct 10 ms 14464 KB Output is correct
23 Correct 12 ms 14464 KB Output is correct
24 Correct 11 ms 14464 KB Output is correct
25 Correct 11 ms 14464 KB Output is correct
26 Correct 10 ms 14464 KB Output is correct
27 Correct 10 ms 14464 KB Output is correct
28 Correct 10 ms 14464 KB Output is correct
29 Correct 10 ms 14464 KB Output is correct
30 Correct 10 ms 14464 KB Output is correct
31 Correct 10 ms 14464 KB Output is correct
32 Correct 10 ms 14464 KB Output is correct
33 Correct 10 ms 14464 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 10 ms 14464 KB Output is correct
4 Correct 10 ms 14464 KB Output is correct
5 Correct 10 ms 14464 KB Output is correct
6 Correct 10 ms 14404 KB Output is correct
7 Correct 11 ms 14464 KB Output is correct
8 Correct 11 ms 14464 KB Output is correct
9 Correct 11 ms 14464 KB Output is correct
10 Correct 10 ms 14464 KB Output is correct
11 Correct 10 ms 14464 KB Output is correct
12 Correct 11 ms 14464 KB Output is correct
13 Correct 10 ms 14464 KB Output is correct
14 Correct 10 ms 14464 KB Output is correct
15 Correct 10 ms 14464 KB Output is correct
16 Correct 10 ms 14464 KB Output is correct
17 Correct 10 ms 14464 KB Output is correct
18 Correct 10 ms 14464 KB Output is correct
19 Correct 10 ms 14464 KB Output is correct
20 Correct 10 ms 14464 KB Output is correct
21 Correct 13 ms 14464 KB Output is correct
22 Correct 10 ms 14464 KB Output is correct
23 Correct 12 ms 14464 KB Output is correct
24 Correct 11 ms 14464 KB Output is correct
25 Correct 11 ms 14464 KB Output is correct
26 Correct 10 ms 14464 KB Output is correct
27 Correct 10 ms 14464 KB Output is correct
28 Correct 10 ms 14464 KB Output is correct
29 Correct 10 ms 14464 KB Output is correct
30 Correct 10 ms 14464 KB Output is correct
31 Correct 10 ms 14464 KB Output is correct
32 Correct 10 ms 14464 KB Output is correct
33 Correct 10 ms 14464 KB Output is correct
34 Correct 12 ms 14592 KB Output is correct
35 Correct 93 ms 19976 KB Output is correct
36 Correct 118 ms 22264 KB Output is correct
37 Correct 114 ms 22136 KB Output is correct
38 Correct 112 ms 22008 KB Output is correct
39 Correct 13 ms 14848 KB Output is correct
40 Correct 15 ms 14976 KB Output is correct
41 Correct 15 ms 14976 KB Output is correct
42 Correct 13 ms 14848 KB Output is correct
43 Correct 14 ms 14848 KB Output is correct
44 Correct 14 ms 14848 KB Output is correct
45 Correct 13 ms 14848 KB Output is correct
46 Correct 13 ms 14848 KB Output is correct
47 Correct 15 ms 14848 KB Output is correct
48 Correct 15 ms 14848 KB Output is correct
49 Correct 21 ms 15360 KB Output is correct
50 Correct 115 ms 22260 KB Output is correct
51 Correct 17 ms 14976 KB Output is correct
52 Correct 104 ms 20984 KB Output is correct
53 Correct 20 ms 15352 KB Output is correct
54 Correct 124 ms 21572 KB Output is correct
55 Correct 15 ms 14976 KB Output is correct
56 Correct 15 ms 14976 KB Output is correct
57 Correct 15 ms 14976 KB Output is correct
58 Correct 15 ms 14976 KB Output is correct
59 Correct 15 ms 15104 KB Output is correct
60 Correct 96 ms 20052 KB Output is correct
61 Correct 16 ms 14848 KB Output is correct
62 Correct 109 ms 21756 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14464 KB Output is correct
2 Correct 10 ms 14464 KB Output is correct
3 Correct 10 ms 14464 KB Output is correct
4 Correct 10 ms 14464 KB Output is correct
5 Correct 10 ms 14464 KB Output is correct
6 Correct 10 ms 14404 KB Output is correct
7 Correct 11 ms 14464 KB Output is correct
8 Correct 11 ms 14464 KB Output is correct
9 Correct 11 ms 14464 KB Output is correct
10 Correct 10 ms 14464 KB Output is correct
11 Correct 10 ms 14464 KB Output is correct
12 Correct 11 ms 14464 KB Output is correct
13 Correct 10 ms 14464 KB Output is correct
14 Correct 10 ms 14464 KB Output is correct
15 Correct 10 ms 14464 KB Output is correct
16 Correct 10 ms 14464 KB Output is correct
17 Correct 10 ms 14464 KB Output is correct
18 Correct 10 ms 14464 KB Output is correct
19 Correct 10 ms 14464 KB Output is correct
20 Correct 10 ms 14464 KB Output is correct
21 Correct 13 ms 14464 KB Output is correct
22 Correct 10 ms 14464 KB Output is correct
23 Correct 12 ms 14464 KB Output is correct
24 Correct 11 ms 14464 KB Output is correct
25 Correct 11 ms 14464 KB Output is correct
26 Correct 10 ms 14464 KB Output is correct
27 Correct 10 ms 14464 KB Output is correct
28 Correct 10 ms 14464 KB Output is correct
29 Correct 10 ms 14464 KB Output is correct
30 Correct 10 ms 14464 KB Output is correct
31 Correct 10 ms 14464 KB Output is correct
32 Correct 10 ms 14464 KB Output is correct
33 Correct 10 ms 14464 KB Output is correct
34 Correct 12 ms 14592 KB Output is correct
35 Correct 93 ms 19976 KB Output is correct
36 Correct 118 ms 22264 KB Output is correct
37 Correct 114 ms 22136 KB Output is correct
38 Correct 112 ms 22008 KB Output is correct
39 Correct 13 ms 14848 KB Output is correct
40 Correct 15 ms 14976 KB Output is correct
41 Correct 15 ms 14976 KB Output is correct
42 Correct 13 ms 14848 KB Output is correct
43 Correct 14 ms 14848 KB Output is correct
44 Correct 14 ms 14848 KB Output is correct
45 Correct 13 ms 14848 KB Output is correct
46 Correct 13 ms 14848 KB Output is correct
47 Correct 15 ms 14848 KB Output is correct
48 Correct 15 ms 14848 KB Output is correct
49 Correct 21 ms 15360 KB Output is correct
50 Correct 115 ms 22260 KB Output is correct
51 Correct 17 ms 14976 KB Output is correct
52 Correct 104 ms 20984 KB Output is correct
53 Correct 20 ms 15352 KB Output is correct
54 Correct 124 ms 21572 KB Output is correct
55 Correct 15 ms 14976 KB Output is correct
56 Correct 15 ms 14976 KB Output is correct
57 Correct 15 ms 14976 KB Output is correct
58 Correct 15 ms 14976 KB Output is correct
59 Correct 15 ms 15104 KB Output is correct
60 Correct 96 ms 20052 KB Output is correct
61 Correct 16 ms 14848 KB Output is correct
62 Correct 109 ms 21756 KB Output is correct
63 Correct 473 ms 53880 KB Output is correct
64 Correct 476 ms 53880 KB Output is correct
65 Correct 479 ms 54136 KB Output is correct
66 Correct 298 ms 34296 KB Output is correct
67 Correct 541 ms 51704 KB Output is correct
68 Correct 297 ms 34296 KB Output is correct
69 Correct 528 ms 34168 KB Output is correct
70 Correct 309 ms 34100 KB Output is correct
71 Correct 329 ms 34180 KB Output is correct
72 Correct 579 ms 36856 KB Output is correct
73 Correct 578 ms 38136 KB Output is correct
74 Correct 1116 ms 48368 KB Output is correct
75 Correct 675 ms 37496 KB Output is correct
76 Correct 851 ms 42872 KB Output is correct
77 Correct 847 ms 43128 KB Output is correct
78 Correct 250 ms 33016 KB Output is correct
79 Correct 451 ms 37496 KB Output is correct
80 Correct 283 ms 33016 KB Output is correct
81 Correct 520 ms 36856 KB Output is correct
82 Correct 712 ms 42744 KB Output is correct
83 Correct 718 ms 42744 KB Output is correct
84 Correct 639 ms 42744 KB Output is correct
85 Correct 625 ms 42744 KB Output is correct
86 Correct 399 ms 62160 KB Output is correct
87 Correct 442 ms 64504 KB Output is correct
88 Correct 574 ms 37368 KB Output is correct
89 Correct 814 ms 41592 KB Output is correct