oj.uz

Submission #212204

# Submission time Handle Problem Language Result Execution time Memory
212204 2020-03-22T13:35:31 Z nvmdava Making Friends on Joitter is Fun (JOI20_joitter2) C++17
100 / 100
 2086 ms 64888 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ff first
#define ss second
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define N 100005
#define INF 0x3f3f3f3f3f3f3f3f
#define MOD 1000000007LL

int p[N], sz[N];
int find(int v){
	return v == p[v] ? v : p[v] = find(p[v]);
}

ll res = 0;

multiset<pair<int, int> > on, in[N], con;
int cnt[N];

void insert(int v, int u){
	int vv = find(v);
	int uu = find(u);
	if(vv == uu) return;
	if(on.count({v, uu})) return;

	if(!con.count({uu, vv})){
		res += sz[uu];
		con.insert({vv, uu});
		on.insert({v, uu});
		++cnt[uu];
		in[vv].insert({v, uu});
		in[uu].insert({v, uu});
		return;
	}
	
	if(in[vv].size() < in[uu].size())
		swap(vv, uu);

	res -= 1LL * sz[vv] * (sz[vv] - 1);
	res -= 1LL * sz[uu] * (sz[uu] - 1);

	for(auto x : in[uu]){
		res -= sz[x.ss];
		con.erase(con.find({find(x.ff), x.ss}));
		on.erase(x);
		--cnt[x.ss];
		if(x.ss == uu)
			in[find(x.ff)].erase(x);
		else
			in[x.ss].erase(x);
	}

	p[uu] = vv;
	res += cnt[vv] * sz[uu];
	sz[vv] += sz[uu];
	res += 1LL * sz[vv] * (sz[vv] - 1);

	for(auto x : in[uu])
		insert(x.ff, x.ss);
	
	in[uu].clear();
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    int n, m;
    cin>>n>>m;
    for(int i = 1; i <= n; ++i){
    	p[i] = i;
    	sz[i] = 1;
    }
    while(m--){
    	int v, u;
    	cin>>v>>u;
    	insert(v, u);
    	cout<<res<<'\n';
    }
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5120 KB Output is correct
2 Correct 7 ms 5120 KB Output is correct
3 Correct 7 ms 5120 KB Output is correct
4 Correct 7 ms 5120 KB Output is correct
5 Correct 7 ms 4992 KB Output is correct
6 Correct 8 ms 4992 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 8 ms 5120 KB Output is correct
9 Correct 8 ms 5120 KB Output is correct
10 Correct 7 ms 4992 KB Output is correct
11 Correct 7 ms 4992 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 7 ms 4992 KB Output is correct
14 Correct 8 ms 5120 KB Output is correct
15 Correct 7 ms 4992 KB Output is correct
16 Correct 7 ms 4992 KB Output is correct
17 Correct 8 ms 5120 KB Output is correct
18 Correct 8 ms 4992 KB Output is correct
19 Correct 7 ms 5120 KB Output is correct
20 Correct 7 ms 5120 KB Output is correct
21 Correct 8 ms 5120 KB Output is correct
22 Correct 7 ms 4992 KB Output is correct
23 Correct 9 ms 5120 KB Output is correct
24 Correct 7 ms 5120 KB Output is correct
25 Correct 8 ms 5120 KB Output is correct
26 Correct 7 ms 5120 KB Output is correct
27 Correct 9 ms 4992 KB Output is correct
28 Correct 7 ms 5120 KB Output is correct
29 Correct 7 ms 4992 KB Output is correct
30 Correct 7 ms 4992 KB Output is correct
31 Correct 8 ms 5120 KB Output is correct
32 Correct 7 ms 4992 KB Output is correct
33 Correct 8 ms 5120 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5120 KB Output is correct
2 Correct 7 ms 5120 KB Output is correct
3 Correct 7 ms 5120 KB Output is correct
4 Correct 7 ms 5120 KB Output is correct
5 Correct 7 ms 4992 KB Output is correct
6 Correct 8 ms 4992 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 8 ms 5120 KB Output is correct
9 Correct 8 ms 5120 KB Output is correct
10 Correct 7 ms 4992 KB Output is correct
11 Correct 7 ms 4992 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 7 ms 4992 KB Output is correct
14 Correct 8 ms 5120 KB Output is correct
15 Correct 7 ms 4992 KB Output is correct
16 Correct 7 ms 4992 KB Output is correct
17 Correct 8 ms 5120 KB Output is correct
18 Correct 8 ms 4992 KB Output is correct
19 Correct 7 ms 5120 KB Output is correct
20 Correct 7 ms 5120 KB Output is correct
21 Correct 8 ms 5120 KB Output is correct
22 Correct 7 ms 4992 KB Output is correct
23 Correct 9 ms 5120 KB Output is correct
24 Correct 7 ms 5120 KB Output is correct
25 Correct 8 ms 5120 KB Output is correct
26 Correct 7 ms 5120 KB Output is correct
27 Correct 9 ms 4992 KB Output is correct
28 Correct 7 ms 5120 KB Output is correct
29 Correct 7 ms 4992 KB Output is correct
30 Correct 7 ms 4992 KB Output is correct
31 Correct 8 ms 5120 KB Output is correct
32 Correct 7 ms 4992 KB Output is correct
33 Correct 8 ms 5120 KB Output is correct
34 Correct 12 ms 5248 KB Output is correct
35 Correct 104 ms 9044 KB Output is correct
36 Correct 154 ms 12012 KB Output is correct
37 Correct 145 ms 12152 KB Output is correct
38 Correct 150 ms 11644 KB Output is correct
39 Correct 9 ms 5120 KB Output is correct
40 Correct 12 ms 5376 KB Output is correct
41 Correct 12 ms 5248 KB Output is correct
42 Correct 9 ms 5120 KB Output is correct
43 Correct 11 ms 5248 KB Output is correct
44 Correct 11 ms 5376 KB Output is correct
45 Correct 9 ms 5120 KB Output is correct
46 Correct 11 ms 5120 KB Output is correct
47 Correct 12 ms 5248 KB Output is correct
48 Correct 14 ms 5248 KB Output is correct
49 Correct 26 ms 6144 KB Output is correct
50 Correct 143 ms 12152 KB Output is correct
51 Correct 18 ms 5632 KB Output is correct
52 Correct 115 ms 10104 KB Output is correct
53 Correct 24 ms 6016 KB Output is correct
54 Correct 128 ms 11128 KB Output is correct
55 Correct 20 ms 5888 KB Output is correct
56 Correct 17 ms 5888 KB Output is correct
57 Correct 17 ms 5888 KB Output is correct
58 Correct 17 ms 5888 KB Output is correct
59 Correct 9 ms 5120 KB Output is correct
60 Correct 96 ms 7416 KB Output is correct
61 Correct 14 ms 5376 KB Output is correct
62 Correct 138 ms 11640 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5120 KB Output is correct
2 Correct 7 ms 5120 KB Output is correct
3 Correct 7 ms 5120 KB Output is correct
4 Correct 7 ms 5120 KB Output is correct
5 Correct 7 ms 4992 KB Output is correct
6 Correct 8 ms 4992 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 8 ms 5120 KB Output is correct
9 Correct 8 ms 5120 KB Output is correct
10 Correct 7 ms 4992 KB Output is correct
11 Correct 7 ms 4992 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 7 ms 4992 KB Output is correct
14 Correct 8 ms 5120 KB Output is correct
15 Correct 7 ms 4992 KB Output is correct
16 Correct 7 ms 4992 KB Output is correct
17 Correct 8 ms 5120 KB Output is correct
18 Correct 8 ms 4992 KB Output is correct
19 Correct 7 ms 5120 KB Output is correct
20 Correct 7 ms 5120 KB Output is correct
21 Correct 8 ms 5120 KB Output is correct
22 Correct 7 ms 4992 KB Output is correct
23 Correct 9 ms 5120 KB Output is correct
24 Correct 7 ms 5120 KB Output is correct
25 Correct 8 ms 5120 KB Output is correct
26 Correct 7 ms 5120 KB Output is correct
27 Correct 9 ms 4992 KB Output is correct
28 Correct 7 ms 5120 KB Output is correct
29 Correct 7 ms 4992 KB Output is correct
30 Correct 7 ms 4992 KB Output is correct
31 Correct 8 ms 5120 KB Output is correct
32 Correct 7 ms 4992 KB Output is correct
33 Correct 8 ms 5120 KB Output is correct
34 Correct 12 ms 5248 KB Output is correct
35 Correct 104 ms 9044 KB Output is correct
36 Correct 154 ms 12012 KB Output is correct
37 Correct 145 ms 12152 KB Output is correct
38 Correct 150 ms 11644 KB Output is correct
39 Correct 9 ms 5120 KB Output is correct
40 Correct 12 ms 5376 KB Output is correct
41 Correct 12 ms 5248 KB Output is correct
42 Correct 9 ms 5120 KB Output is correct
43 Correct 11 ms 5248 KB Output is correct
44 Correct 11 ms 5376 KB Output is correct
45 Correct 9 ms 5120 KB Output is correct
46 Correct 11 ms 5120 KB Output is correct
47 Correct 12 ms 5248 KB Output is correct
48 Correct 14 ms 5248 KB Output is correct
49 Correct 26 ms 6144 KB Output is correct
50 Correct 143 ms 12152 KB Output is correct
51 Correct 18 ms 5632 KB Output is correct
52 Correct 115 ms 10104 KB Output is correct
53 Correct 24 ms 6016 KB Output is correct
54 Correct 128 ms 11128 KB Output is correct
55 Correct 20 ms 5888 KB Output is correct
56 Correct 17 ms 5888 KB Output is correct
57 Correct 17 ms 5888 KB Output is correct
58 Correct 17 ms 5888 KB Output is correct
59 Correct 9 ms 5120 KB Output is correct
60 Correct 96 ms 7416 KB Output is correct
61 Correct 14 ms 5376 KB Output is correct
62 Correct 138 ms 11640 KB Output is correct
63 Correct 1088 ms 64580 KB Output is correct
64 Correct 1107 ms 64888 KB Output is correct
65 Correct 1084 ms 64636 KB Output is correct
66 Correct 108 ms 8312 KB Output is correct
67 Correct 585 ms 17016 KB Output is correct
68 Correct 110 ms 8312 KB Output is correct
69 Correct 417 ms 17656 KB Output is correct
70 Correct 121 ms 8312 KB Output is correct
71 Correct 122 ms 8312 KB Output is correct
72 Correct 660 ms 17144 KB Output is correct
73 Correct 633 ms 17144 KB Output is correct
74 Correct 2086 ms 30284 KB Output is correct
75 Correct 856 ms 23928 KB Output is correct
76 Correct 1531 ms 29952 KB Output is correct
77 Correct 1520 ms 30092 KB Output is correct
78 Correct 277 ms 17144 KB Output is correct
79 Correct 548 ms 19576 KB Output is correct
80 Correct 263 ms 17072 KB Output is correct
81 Correct 420 ms 18680 KB Output is correct
82 Correct 1330 ms 45304 KB Output is correct
83 Correct 1355 ms 45048 KB Output is correct
84 Correct 1324 ms 45332 KB Output is correct
85 Correct 1275 ms 45304 KB Output is correct
86 Correct 112 ms 7544 KB Output is correct
87 Correct 163 ms 8696 KB Output is correct
88 Correct 619 ms 17144 KB Output is correct
89 Correct 1421 ms 29304 KB Output is correct