oj.uz

Submission #734044

# Submission time Handle Problem Language Result Execution time Memory
734044 2023-05-01T14:25:06 Z lukameladze Making Friends on Joitter is Fun (JOI20_joitter2) C++14
100 / 100
 974 ms 114064 KB 
# include <bits/stdc++.h>
using namespace std;
#define f first
#define s second
 #define int long long
#define pii pair <int, int>
#define pb push_back
const int N = 3e5 + 5;
int t,n,a[N],p[N],m;
long long ans, sz[N];
set <int> g[N], rg[N],v[N],comp[N];
int get(int sz) {
	return sz * (sz - 1);
}
int get_col(int a) {
	if (a == p[a]) return a;
	else return p[a] = get_col(p[a]);
}
void col(int a, int b) {
	a = get_col(a); b = get_col(b);
	if (a == b) return ;
	if (comp[a].size() < comp[b].size()) swap(a,b); 
	ans -= get(sz[a]);
	ans -= get(sz[b]);
	
	ans -= v[a].size() * sz[a];
	ans -= v[b].size() * sz[b];
	ans += get(sz[a] + sz[b]);
	

	for (int x : v[b]) {
		if (get_col(x) != a) v[a].insert(x); 
	}
	for (int x : comp[b]) {
		if (v[a].count(x)) {
			v[a].erase(x);
		}
		comp[a].insert(x); p[x] = a;
	}
	comp[b].clear();
	ans += v[a].size() * (sz[a] + sz[b]);
	v[b].clear();
	p[b] = a;
	sz[a] += sz[b]; sz[b] = 0;
	vector <pii> vec;
	for (int to : g[b]) {
		rg[to].erase(b); if (get_col(to) != a) { rg[to].insert(a), g[a].insert(to); if (g[to].count(a)) vec.pb({to, a}); }
	}
	for (int to : rg[b]) {
		g[to].erase(b); if (get_col(to) != a) { g[to].insert(a), rg[a].insert(to); if (g[a].count(to)) vec.pb({to, a}); }
	}
	for (pii sth : vec) {
		col(sth.f, sth.s);
	}
	/*
	while (s[x].lower_bound({y, 0}) != s[x].end()){ 
		pii sth = *s[x].lowesr_bound({y, 0});
		if (sth.f != y) break;
		s[x].erase(sth);
	}
	while (s[y].lower_bound({x, 0}) != s[y].end()) {
		pii sth = *s[y].lower_bound({x, 0});
		if (sth.f != x) break;
		s[y].erase(sth);
	}
	*/
	
}
main() {
	std::ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
	cin>>n>>m;
  	
	for (int i = 1; i <= n; i++) {
		p[i] = i; sz[i] = 1; comp[i].insert(i);
	}
	for (int i = 1; i <= m; i++) {
		int a, b;
		cin>>a>>b;
		int x = get_col(a), y = get_col(b);
		if (x == y) {
			 cout<<ans<<'\n';
			continue;
		}
		if (v[y].count(a)) {
			 cout<<ans<<'\n';
			continue;
		}
		g[x].insert(y); rg[y].insert(x); v[y].insert(a);
		ans += sz[y];
		if (g[x].count(y) && g[y].count(x)) {
			col(x, y);
		} 
		cout<<ans<<'\n';
	}
}

Compilation message

joitter2.cpp:69:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   69 | main() {
      | ^~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 56660 KB Output is correct
2 Correct 29 ms 56644 KB Output is correct
3 Correct 25 ms 56700 KB Output is correct
4 Correct 28 ms 56660 KB Output is correct
5 Correct 25 ms 56688 KB Output is correct
6 Correct 31 ms 56752 KB Output is correct
7 Correct 26 ms 56692 KB Output is correct
8 Correct 27 ms 56660 KB Output is correct
9 Correct 27 ms 56700 KB Output is correct
10 Correct 25 ms 56668 KB Output is correct
11 Correct 27 ms 56716 KB Output is correct
12 Correct 25 ms 56636 KB Output is correct
13 Correct 25 ms 56584 KB Output is correct
14 Correct 25 ms 56784 KB Output is correct
15 Correct 26 ms 56648 KB Output is correct
16 Correct 26 ms 56664 KB Output is correct
17 Correct 26 ms 56660 KB Output is correct
18 Correct 28 ms 56668 KB Output is correct
19 Correct 29 ms 56604 KB Output is correct
20 Correct 26 ms 56720 KB Output is correct
21 Correct 27 ms 56660 KB Output is correct
22 Correct 26 ms 56720 KB Output is correct
23 Correct 26 ms 56684 KB Output is correct
24 Correct 26 ms 56644 KB Output is correct
25 Correct 26 ms 56652 KB Output is correct
26 Correct 27 ms 56704 KB Output is correct
27 Correct 25 ms 56708 KB Output is correct
28 Correct 27 ms 56660 KB Output is correct
29 Correct 26 ms 56696 KB Output is correct
30 Correct 28 ms 56620 KB Output is correct
31 Correct 26 ms 56644 KB Output is correct
32 Correct 28 ms 56696 KB Output is correct
33 Correct 26 ms 56748 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 56660 KB Output is correct
2 Correct 29 ms 56644 KB Output is correct
3 Correct 25 ms 56700 KB Output is correct
4 Correct 28 ms 56660 KB Output is correct
5 Correct 25 ms 56688 KB Output is correct
6 Correct 31 ms 56752 KB Output is correct
7 Correct 26 ms 56692 KB Output is correct
8 Correct 27 ms 56660 KB Output is correct
9 Correct 27 ms 56700 KB Output is correct
10 Correct 25 ms 56668 KB Output is correct
11 Correct 27 ms 56716 KB Output is correct
12 Correct 25 ms 56636 KB Output is correct
13 Correct 25 ms 56584 KB Output is correct
14 Correct 25 ms 56784 KB Output is correct
15 Correct 26 ms 56648 KB Output is correct
16 Correct 26 ms 56664 KB Output is correct
17 Correct 26 ms 56660 KB Output is correct
18 Correct 28 ms 56668 KB Output is correct
19 Correct 29 ms 56604 KB Output is correct
20 Correct 26 ms 56720 KB Output is correct
21 Correct 27 ms 56660 KB Output is correct
22 Correct 26 ms 56720 KB Output is correct
23 Correct 26 ms 56684 KB Output is correct
24 Correct 26 ms 56644 KB Output is correct
25 Correct 26 ms 56652 KB Output is correct
26 Correct 27 ms 56704 KB Output is correct
27 Correct 25 ms 56708 KB Output is correct
28 Correct 27 ms 56660 KB Output is correct
29 Correct 26 ms 56696 KB Output is correct
30 Correct 28 ms 56620 KB Output is correct
31 Correct 26 ms 56644 KB Output is correct
32 Correct 28 ms 56696 KB Output is correct
33 Correct 26 ms 56748 KB Output is correct
34 Correct 30 ms 56772 KB Output is correct
35 Correct 91 ms 62804 KB Output is correct
36 Correct 116 ms 65932 KB Output is correct
37 Correct 112 ms 65960 KB Output is correct
38 Correct 111 ms 65532 KB Output is correct
39 Correct 28 ms 57044 KB Output is correct
40 Correct 31 ms 57148 KB Output is correct
41 Correct 33 ms 57116 KB Output is correct
42 Correct 28 ms 57032 KB Output is correct
43 Correct 32 ms 57012 KB Output is correct
44 Correct 30 ms 57088 KB Output is correct
45 Correct 28 ms 57036 KB Output is correct
46 Correct 29 ms 56948 KB Output is correct
47 Correct 29 ms 57064 KB Output is correct
48 Correct 29 ms 57164 KB Output is correct
49 Correct 35 ms 58060 KB Output is correct
50 Correct 119 ms 66008 KB Output is correct
51 Correct 33 ms 57300 KB Output is correct
52 Correct 100 ms 64236 KB Output is correct
53 Correct 35 ms 57976 KB Output is correct
54 Correct 103 ms 65048 KB Output is correct
55 Correct 36 ms 57420 KB Output is correct
56 Correct 31 ms 57428 KB Output is correct
57 Correct 31 ms 57764 KB Output is correct
58 Correct 33 ms 57848 KB Output is correct
59 Correct 28 ms 56992 KB Output is correct
60 Correct 87 ms 61964 KB Output is correct
61 Correct 29 ms 57140 KB Output is correct
62 Correct 108 ms 65364 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 56660 KB Output is correct
2 Correct 29 ms 56644 KB Output is correct
3 Correct 25 ms 56700 KB Output is correct
4 Correct 28 ms 56660 KB Output is correct
5 Correct 25 ms 56688 KB Output is correct
6 Correct 31 ms 56752 KB Output is correct
7 Correct 26 ms 56692 KB Output is correct
8 Correct 27 ms 56660 KB Output is correct
9 Correct 27 ms 56700 KB Output is correct
10 Correct 25 ms 56668 KB Output is correct
11 Correct 27 ms 56716 KB Output is correct
12 Correct 25 ms 56636 KB Output is correct
13 Correct 25 ms 56584 KB Output is correct
14 Correct 25 ms 56784 KB Output is correct
15 Correct 26 ms 56648 KB Output is correct
16 Correct 26 ms 56664 KB Output is correct
17 Correct 26 ms 56660 KB Output is correct
18 Correct 28 ms 56668 KB Output is correct
19 Correct 29 ms 56604 KB Output is correct
20 Correct 26 ms 56720 KB Output is correct
21 Correct 27 ms 56660 KB Output is correct
22 Correct 26 ms 56720 KB Output is correct
23 Correct 26 ms 56684 KB Output is correct
24 Correct 26 ms 56644 KB Output is correct
25 Correct 26 ms 56652 KB Output is correct
26 Correct 27 ms 56704 KB Output is correct
27 Correct 25 ms 56708 KB Output is correct
28 Correct 27 ms 56660 KB Output is correct
29 Correct 26 ms 56696 KB Output is correct
30 Correct 28 ms 56620 KB Output is correct
31 Correct 26 ms 56644 KB Output is correct
32 Correct 28 ms 56696 KB Output is correct
33 Correct 26 ms 56748 KB Output is correct
34 Correct 30 ms 56772 KB Output is correct
35 Correct 91 ms 62804 KB Output is correct
36 Correct 116 ms 65932 KB Output is correct
37 Correct 112 ms 65960 KB Output is correct
38 Correct 111 ms 65532 KB Output is correct
39 Correct 28 ms 57044 KB Output is correct
40 Correct 31 ms 57148 KB Output is correct
41 Correct 33 ms 57116 KB Output is correct
42 Correct 28 ms 57032 KB Output is correct
43 Correct 32 ms 57012 KB Output is correct
44 Correct 30 ms 57088 KB Output is correct
45 Correct 28 ms 57036 KB Output is correct
46 Correct 29 ms 56948 KB Output is correct
47 Correct 29 ms 57064 KB Output is correct
48 Correct 29 ms 57164 KB Output is correct
49 Correct 35 ms 58060 KB Output is correct
50 Correct 119 ms 66008 KB Output is correct
51 Correct 33 ms 57300 KB Output is correct
52 Correct 100 ms 64236 KB Output is correct
53 Correct 35 ms 57976 KB Output is correct
54 Correct 103 ms 65048 KB Output is correct
55 Correct 36 ms 57420 KB Output is correct
56 Correct 31 ms 57428 KB Output is correct
57 Correct 31 ms 57764 KB Output is correct
58 Correct 33 ms 57848 KB Output is correct
59 Correct 28 ms 56992 KB Output is correct
60 Correct 87 ms 61964 KB Output is correct
61 Correct 29 ms 57140 KB Output is correct
62 Correct 108 ms 65364 KB Output is correct
63 Correct 454 ms 110696 KB Output is correct
64 Correct 453 ms 110620 KB Output is correct
65 Correct 457 ms 110676 KB Output is correct
66 Correct 217 ms 76828 KB Output is correct
67 Correct 493 ms 81132 KB Output is correct
68 Correct 245 ms 76716 KB Output is correct
69 Correct 474 ms 77864 KB Output is correct
70 Correct 214 ms 76828 KB Output is correct
71 Correct 210 ms 76692 KB Output is correct
72 Correct 505 ms 80400 KB Output is correct
73 Correct 465 ms 81056 KB Output is correct
74 Correct 974 ms 105608 KB Output is correct
75 Correct 599 ms 83948 KB Output is correct
76 Correct 750 ms 94508 KB Output is correct
77 Correct 748 ms 94636 KB Output is correct
78 Correct 253 ms 79300 KB Output is correct
79 Correct 398 ms 83188 KB Output is correct
80 Correct 245 ms 79152 KB Output is correct
81 Correct 397 ms 82668 KB Output is correct
82 Correct 715 ms 95180 KB Output is correct
83 Correct 717 ms 95220 KB Output is correct
84 Correct 729 ms 114064 KB Output is correct
85 Correct 686 ms 114036 KB Output is correct
86 Correct 352 ms 77572 KB Output is correct
87 Correct 353 ms 79820 KB Output is correct
88 Correct 484 ms 80880 KB Output is correct
89 Correct 726 ms 91688 KB Output is correct