oj.uz

Submission #365316

# Submission time Handle Problem Language Result Execution time Memory
365316 2021-02-11T12:38:21 Z negar_a Making Friends on Joitter is Fun (JOI20_joitter2) C++14
100 / 100
 1467 ms 96748 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
#define pb push_back
#define mp make_pair
#define pii pair <ll, ll>
#define fast_io ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define F first
#define S second

const ll maxn = 3e5 + 10;
ll par[maxn], sz[maxn];
set <ll> in[maxn], inc[maxn];
set <pii> out[maxn];
queue <pii> q;
ll ans = 0;

ll find_par(ll x){
	if(x == par[x])
		return x;
	return par[x] = find_par(par[x]);
}
inline bool add_edge(ll a, ll b){
	b = find_par(b);
	ll p = find_par(a);
	if(p == b || out[p].find(mp(a, b)) != out[p].end()){
		return false;
	}
	out[p].insert({a, b});
	in[b].insert(a);
	inc[b].insert(p);
	if(inc[p].find(b) != inc[p].end()){
		q.push({p, b});
	}
	return true;
}
void update_edges(ll x, ll y){
	vector <pii> add, del;
	for(ll u : in[x]){
		del.pb({u, x});
		if(find_par(u) != y){
			add.pb({u, y});
		}
	}
	for(auto u : out[x]){
		del.pb(u);
		if(find_par(u.S) != y)
			add.pb(u);
	}
	for(auto u : del){
		out[find_par(u.F)].erase(u);
		in[find_par(u.S)].erase(u.F);
	}
	
	ll px = find_par(x);
	ll py = find_par(y);
	par[px] = py;
	sz[py] += sz[px];
	
	for(auto u : add){
		add_edge(u.F, u.S);
	}
}
ll siz(ll y){
//	cout << "innn " << in[y].size() << endl;
	return 1LL * sz[y] * (sz[y] - (ll)1) + sz[y] * (ll)in[y].size();
}

void merge(ll x, ll y){
	if(in[x].size() + out[x].size() > in[y].size() + out[y].size())
		swap(x, y);
	ans -= (siz(y) + siz(x));
//	cout << "annnnn " << ans << endl;
	update_edges(x, y);
	ans += siz(y);
}

int main(){
	fast_io;
	ll n, m;
	cin >> n >> m;
	for(ll i = 0; i < n; i ++){
		sz[i] = 1;
		par[i] = i;
	}
	while(m --){
		ll a, b;
		cin >> a >> b;
		a --; b --;
		if(add_edge(a, b)){
			ans += sz[find_par(b)];
		}
		while(q.size()){
			ll x = find_par(q.front().F);
			ll y = find_par(q.front().S);
//			cout << "!: " << x << " " << y << endl;
			q.pop();
			if(x != y){
				merge(x, y);
			}
		}
		cout << ans << '\n';
	}
	return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 42604 KB Output is correct
2 Correct 28 ms 42604 KB Output is correct
3 Correct 33 ms 42752 KB Output is correct
4 Correct 29 ms 42604 KB Output is correct
5 Correct 29 ms 42604 KB Output is correct
6 Correct 33 ms 42604 KB Output is correct
7 Correct 33 ms 42732 KB Output is correct
8 Correct 34 ms 42732 KB Output is correct
9 Correct 29 ms 42732 KB Output is correct
10 Correct 29 ms 42604 KB Output is correct
11 Correct 28 ms 42604 KB Output is correct
12 Correct 28 ms 42604 KB Output is correct
13 Correct 30 ms 42604 KB Output is correct
14 Correct 33 ms 42604 KB Output is correct
15 Correct 28 ms 42604 KB Output is correct
16 Correct 29 ms 42604 KB Output is correct
17 Correct 29 ms 42604 KB Output is correct
18 Correct 29 ms 42604 KB Output is correct
19 Correct 28 ms 42604 KB Output is correct
20 Correct 29 ms 42604 KB Output is correct
21 Correct 30 ms 42732 KB Output is correct
22 Correct 29 ms 42604 KB Output is correct
23 Correct 29 ms 42732 KB Output is correct
24 Correct 29 ms 42604 KB Output is correct
25 Correct 29 ms 42732 KB Output is correct
26 Correct 33 ms 42604 KB Output is correct
27 Correct 30 ms 42604 KB Output is correct
28 Correct 33 ms 42604 KB Output is correct
29 Correct 28 ms 42604 KB Output is correct
30 Correct 32 ms 42604 KB Output is correct
31 Correct 29 ms 42604 KB Output is correct
32 Correct 29 ms 42732 KB Output is correct
33 Correct 30 ms 42732 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 42604 KB Output is correct
2 Correct 28 ms 42604 KB Output is correct
3 Correct 33 ms 42752 KB Output is correct
4 Correct 29 ms 42604 KB Output is correct
5 Correct 29 ms 42604 KB Output is correct
6 Correct 33 ms 42604 KB Output is correct
7 Correct 33 ms 42732 KB Output is correct
8 Correct 34 ms 42732 KB Output is correct
9 Correct 29 ms 42732 KB Output is correct
10 Correct 29 ms 42604 KB Output is correct
11 Correct 28 ms 42604 KB Output is correct
12 Correct 28 ms 42604 KB Output is correct
13 Correct 30 ms 42604 KB Output is correct
14 Correct 33 ms 42604 KB Output is correct
15 Correct 28 ms 42604 KB Output is correct
16 Correct 29 ms 42604 KB Output is correct
17 Correct 29 ms 42604 KB Output is correct
18 Correct 29 ms 42604 KB Output is correct
19 Correct 28 ms 42604 KB Output is correct
20 Correct 29 ms 42604 KB Output is correct
21 Correct 30 ms 42732 KB Output is correct
22 Correct 29 ms 42604 KB Output is correct
23 Correct 29 ms 42732 KB Output is correct
24 Correct 29 ms 42604 KB Output is correct
25 Correct 29 ms 42732 KB Output is correct
26 Correct 33 ms 42604 KB Output is correct
27 Correct 30 ms 42604 KB Output is correct
28 Correct 33 ms 42604 KB Output is correct
29 Correct 28 ms 42604 KB Output is correct
30 Correct 32 ms 42604 KB Output is correct
31 Correct 29 ms 42604 KB Output is correct
32 Correct 29 ms 42732 KB Output is correct
33 Correct 30 ms 42732 KB Output is correct
34 Correct 31 ms 42860 KB Output is correct
35 Correct 126 ms 48620 KB Output is correct
36 Correct 174 ms 51564 KB Output is correct
37 Correct 164 ms 51692 KB Output is correct
38 Correct 150 ms 51308 KB Output is correct
39 Correct 32 ms 42988 KB Output is correct
40 Correct 32 ms 42988 KB Output is correct
41 Correct 33 ms 42988 KB Output is correct
42 Correct 31 ms 42988 KB Output is correct
43 Correct 33 ms 42988 KB Output is correct
44 Correct 33 ms 42988 KB Output is correct
45 Correct 32 ms 43136 KB Output is correct
46 Correct 32 ms 42988 KB Output is correct
47 Correct 36 ms 43020 KB Output is correct
48 Correct 34 ms 42988 KB Output is correct
49 Correct 43 ms 43884 KB Output is correct
50 Correct 162 ms 51832 KB Output is correct
51 Correct 37 ms 43244 KB Output is correct
52 Correct 135 ms 50028 KB Output is correct
53 Correct 41 ms 43756 KB Output is correct
54 Correct 148 ms 50924 KB Output is correct
55 Correct 36 ms 43372 KB Output is correct
56 Correct 35 ms 43372 KB Output is correct
57 Correct 37 ms 43452 KB Output is correct
58 Correct 35 ms 43500 KB Output is correct
59 Correct 31 ms 42860 KB Output is correct
60 Correct 116 ms 47860 KB Output is correct
61 Correct 33 ms 43116 KB Output is correct
62 Correct 150 ms 51180 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 42604 KB Output is correct
2 Correct 28 ms 42604 KB Output is correct
3 Correct 33 ms 42752 KB Output is correct
4 Correct 29 ms 42604 KB Output is correct
5 Correct 29 ms 42604 KB Output is correct
6 Correct 33 ms 42604 KB Output is correct
7 Correct 33 ms 42732 KB Output is correct
8 Correct 34 ms 42732 KB Output is correct
9 Correct 29 ms 42732 KB Output is correct
10 Correct 29 ms 42604 KB Output is correct
11 Correct 28 ms 42604 KB Output is correct
12 Correct 28 ms 42604 KB Output is correct
13 Correct 30 ms 42604 KB Output is correct
14 Correct 33 ms 42604 KB Output is correct
15 Correct 28 ms 42604 KB Output is correct
16 Correct 29 ms 42604 KB Output is correct
17 Correct 29 ms 42604 KB Output is correct
18 Correct 29 ms 42604 KB Output is correct
19 Correct 28 ms 42604 KB Output is correct
20 Correct 29 ms 42604 KB Output is correct
21 Correct 30 ms 42732 KB Output is correct
22 Correct 29 ms 42604 KB Output is correct
23 Correct 29 ms 42732 KB Output is correct
24 Correct 29 ms 42604 KB Output is correct
25 Correct 29 ms 42732 KB Output is correct
26 Correct 33 ms 42604 KB Output is correct
27 Correct 30 ms 42604 KB Output is correct
28 Correct 33 ms 42604 KB Output is correct
29 Correct 28 ms 42604 KB Output is correct
30 Correct 32 ms 42604 KB Output is correct
31 Correct 29 ms 42604 KB Output is correct
32 Correct 29 ms 42732 KB Output is correct
33 Correct 30 ms 42732 KB Output is correct
34 Correct 31 ms 42860 KB Output is correct
35 Correct 126 ms 48620 KB Output is correct
36 Correct 174 ms 51564 KB Output is correct
37 Correct 164 ms 51692 KB Output is correct
38 Correct 150 ms 51308 KB Output is correct
39 Correct 32 ms 42988 KB Output is correct
40 Correct 32 ms 42988 KB Output is correct
41 Correct 33 ms 42988 KB Output is correct
42 Correct 31 ms 42988 KB Output is correct
43 Correct 33 ms 42988 KB Output is correct
44 Correct 33 ms 42988 KB Output is correct
45 Correct 32 ms 43136 KB Output is correct
46 Correct 32 ms 42988 KB Output is correct
47 Correct 36 ms 43020 KB Output is correct
48 Correct 34 ms 42988 KB Output is correct
49 Correct 43 ms 43884 KB Output is correct
50 Correct 162 ms 51832 KB Output is correct
51 Correct 37 ms 43244 KB Output is correct
52 Correct 135 ms 50028 KB Output is correct
53 Correct 41 ms 43756 KB Output is correct
54 Correct 148 ms 50924 KB Output is correct
55 Correct 36 ms 43372 KB Output is correct
56 Correct 35 ms 43372 KB Output is correct
57 Correct 37 ms 43452 KB Output is correct
58 Correct 35 ms 43500 KB Output is correct
59 Correct 31 ms 42860 KB Output is correct
60 Correct 116 ms 47860 KB Output is correct
61 Correct 33 ms 43116 KB Output is correct
62 Correct 150 ms 51180 KB Output is correct
63 Correct 595 ms 96748 KB Output is correct
64 Correct 653 ms 96680 KB Output is correct
65 Correct 623 ms 96748 KB Output is correct
66 Correct 293 ms 58220 KB Output is correct
67 Correct 445 ms 61036 KB Output is correct
68 Correct 283 ms 58092 KB Output is correct
69 Correct 579 ms 60140 KB Output is correct
70 Correct 286 ms 57964 KB Output is correct
71 Correct 287 ms 57964 KB Output is correct
72 Correct 498 ms 61548 KB Output is correct
73 Correct 589 ms 61420 KB Output is correct
74 Correct 1467 ms 86252 KB Output is correct
75 Correct 852 ms 66668 KB Output is correct
76 Correct 1014 ms 75992 KB Output is correct
77 Correct 1048 ms 76504 KB Output is correct
78 Correct 332 ms 61304 KB Output is correct
79 Correct 605 ms 66156 KB Output is correct
80 Correct 288 ms 61292 KB Output is correct
81 Correct 502 ms 65004 KB Output is correct
82 Correct 1109 ms 80748 KB Output is correct
83 Correct 1136 ms 80492 KB Output is correct
84 Correct 930 ms 79340 KB Output is correct
85 Correct 919 ms 79340 KB Output is correct
86 Correct 244 ms 57388 KB Output is correct
87 Correct 312 ms 59504 KB Output is correct
88 Correct 528 ms 61804 KB Output is correct
89 Correct 1008 ms 74092 KB Output is correct