oj.uz

Submission #269470

# Submission time Handle Problem Language Result Execution time Memory
269470 2020-08-17T07:15:41 Z 임성재(#5102) Making Friends on Joitter is Fun (JOI20_joitter2) C++17
17 / 100
 5000 ms 41124 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];
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));
		}
	}

	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));
		}
	}

	vector<int> v;

	for(auto i : in[a]) {
		if(Find(i) == a) v.eb(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;

	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 7 ms 9760 KB Output is correct
2 Correct 9 ms 9728 KB Output is correct
3 Correct 7 ms 9728 KB Output is correct
4 Correct 6 ms 9728 KB Output is correct
5 Correct 8 ms 9728 KB Output is correct
6 Correct 9 ms 9728 KB Output is correct
7 Correct 9 ms 9832 KB Output is correct
8 Correct 9 ms 9728 KB Output is correct
9 Correct 10 ms 9728 KB Output is correct
10 Correct 7 ms 9728 KB Output is correct
11 Correct 9 ms 9728 KB Output is correct
12 Correct 8 ms 9728 KB Output is correct
13 Correct 10 ms 9728 KB Output is correct
14 Correct 8 ms 9728 KB Output is correct
15 Correct 7 ms 9728 KB Output is correct
16 Correct 9 ms 9760 KB Output is correct
17 Correct 10 ms 9728 KB Output is correct
18 Correct 7 ms 9728 KB Output is correct
19 Correct 7 ms 9728 KB Output is correct
20 Correct 7 ms 9728 KB Output is correct
21 Correct 8 ms 9728 KB Output is correct
22 Correct 15 ms 9728 KB Output is correct
23 Correct 8 ms 9728 KB Output is correct
24 Correct 8 ms 9820 KB Output is correct
25 Correct 9 ms 9832 KB Output is correct
26 Correct 8 ms 9704 KB Output is correct
27 Correct 15 ms 9728 KB Output is correct
28 Correct 8 ms 9728 KB Output is correct
29 Correct 8 ms 9760 KB Output is correct
30 Correct 8 ms 9728 KB Output is correct
31 Correct 9 ms 9712 KB Output is correct
32 Correct 9 ms 9728 KB Output is correct
33 Correct 15 ms 9844 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9760 KB Output is correct
2 Correct 9 ms 9728 KB Output is correct
3 Correct 7 ms 9728 KB Output is correct
4 Correct 6 ms 9728 KB Output is correct
5 Correct 8 ms 9728 KB Output is correct
6 Correct 9 ms 9728 KB Output is correct
7 Correct 9 ms 9832 KB Output is correct
8 Correct 9 ms 9728 KB Output is correct
9 Correct 10 ms 9728 KB Output is correct
10 Correct 7 ms 9728 KB Output is correct
11 Correct 9 ms 9728 KB Output is correct
12 Correct 8 ms 9728 KB Output is correct
13 Correct 10 ms 9728 KB Output is correct
14 Correct 8 ms 9728 KB Output is correct
15 Correct 7 ms 9728 KB Output is correct
16 Correct 9 ms 9760 KB Output is correct
17 Correct 10 ms 9728 KB Output is correct
18 Correct 7 ms 9728 KB Output is correct
19 Correct 7 ms 9728 KB Output is correct
20 Correct 7 ms 9728 KB Output is correct
21 Correct 8 ms 9728 KB Output is correct
22 Correct 15 ms 9728 KB Output is correct
23 Correct 8 ms 9728 KB Output is correct
24 Correct 8 ms 9820 KB Output is correct
25 Correct 9 ms 9832 KB Output is correct
26 Correct 8 ms 9704 KB Output is correct
27 Correct 15 ms 9728 KB Output is correct
28 Correct 8 ms 9728 KB Output is correct
29 Correct 8 ms 9760 KB Output is correct
30 Correct 8 ms 9728 KB Output is correct
31 Correct 9 ms 9712 KB Output is correct
32 Correct 9 ms 9728 KB Output is correct
33 Correct 15 ms 9844 KB Output is correct
34 Correct 9 ms 9856 KB Output is correct
35 Correct 118 ms 12920 KB Output is correct
36 Correct 153 ms 14904 KB Output is correct
37 Correct 157 ms 14964 KB Output is correct
38 Correct 183 ms 14652 KB Output is correct
39 Correct 11 ms 10112 KB Output is correct
40 Correct 10 ms 10240 KB Output is correct
41 Correct 18 ms 10240 KB Output is correct
42 Correct 11 ms 10088 KB Output is correct
43 Correct 34 ms 10104 KB Output is correct
44 Correct 20 ms 10112 KB Output is correct
45 Correct 11 ms 10112 KB Output is correct
46 Correct 12 ms 10112 KB Output is correct
47 Correct 11 ms 10240 KB Output is correct
48 Correct 14 ms 10240 KB Output is correct
49 Correct 23 ms 10752 KB Output is correct
50 Correct 163 ms 15168 KB Output is correct
51 Correct 24 ms 10488 KB Output is correct
52 Correct 131 ms 13748 KB Output is correct
53 Correct 30 ms 10744 KB Output is correct
54 Correct 147 ms 14328 KB Output is correct
55 Correct 35 ms 10360 KB Output is correct
56 Correct 21 ms 10368 KB Output is correct
57 Correct 21 ms 10328 KB Output is correct
58 Correct 19 ms 10368 KB Output is correct
59 Correct 10 ms 10112 KB Output is correct
60 Correct 115 ms 12408 KB Output is correct
61 Correct 15 ms 10240 KB Output is correct
62 Correct 158 ms 14584 KB Output is correct

Subtask #3
0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9760 KB Output is correct
2 Correct 9 ms 9728 KB Output is correct
3 Correct 7 ms 9728 KB Output is correct
4 Correct 6 ms 9728 KB Output is correct
5 Correct 8 ms 9728 KB Output is correct
6 Correct 9 ms 9728 KB Output is correct
7 Correct 9 ms 9832 KB Output is correct
8 Correct 9 ms 9728 KB Output is correct
9 Correct 10 ms 9728 KB Output is correct
10 Correct 7 ms 9728 KB Output is correct
11 Correct 9 ms 9728 KB Output is correct
12 Correct 8 ms 9728 KB Output is correct
13 Correct 10 ms 9728 KB Output is correct
14 Correct 8 ms 9728 KB Output is correct
15 Correct 7 ms 9728 KB Output is correct
16 Correct 9 ms 9760 KB Output is correct
17 Correct 10 ms 9728 KB Output is correct
18 Correct 7 ms 9728 KB Output is correct
19 Correct 7 ms 9728 KB Output is correct
20 Correct 7 ms 9728 KB Output is correct
21 Correct 8 ms 9728 KB Output is correct
22 Correct 15 ms 9728 KB Output is correct
23 Correct 8 ms 9728 KB Output is correct
24 Correct 8 ms 9820 KB Output is correct
25 Correct 9 ms 9832 KB Output is correct
26 Correct 8 ms 9704 KB Output is correct
27 Correct 15 ms 9728 KB Output is correct
28 Correct 8 ms 9728 KB Output is correct
29 Correct 8 ms 9760 KB Output is correct
30 Correct 8 ms 9728 KB Output is correct
31 Correct 9 ms 9712 KB Output is correct
32 Correct 9 ms 9728 KB Output is correct
33 Correct 15 ms 9844 KB Output is correct
34 Correct 9 ms 9856 KB Output is correct
35 Correct 118 ms 12920 KB Output is correct
36 Correct 153 ms 14904 KB Output is correct
37 Correct 157 ms 14964 KB Output is correct
38 Correct 183 ms 14652 KB Output is correct
39 Correct 11 ms 10112 KB Output is correct
40 Correct 10 ms 10240 KB Output is correct
41 Correct 18 ms 10240 KB Output is correct
42 Correct 11 ms 10088 KB Output is correct
43 Correct 34 ms 10104 KB Output is correct
44 Correct 20 ms 10112 KB Output is correct
45 Correct 11 ms 10112 KB Output is correct
46 Correct 12 ms 10112 KB Output is correct
47 Correct 11 ms 10240 KB Output is correct
48 Correct 14 ms 10240 KB Output is correct
49 Correct 23 ms 10752 KB Output is correct
50 Correct 163 ms 15168 KB Output is correct
51 Correct 24 ms 10488 KB Output is correct
52 Correct 131 ms 13748 KB Output is correct
53 Correct 30 ms 10744 KB Output is correct
54 Correct 147 ms 14328 KB Output is correct
55 Correct 35 ms 10360 KB Output is correct
56 Correct 21 ms 10368 KB Output is correct
57 Correct 21 ms 10328 KB Output is correct
58 Correct 19 ms 10368 KB Output is correct
59 Correct 10 ms 10112 KB Output is correct
60 Correct 115 ms 12408 KB Output is correct
61 Correct 15 ms 10240 KB Output is correct
62 Correct 158 ms 14584 KB Output is correct
63 Correct 552 ms 41084 KB Output is correct
64 Correct 492 ms 41080 KB Output is correct
65 Correct 509 ms 41124 KB Output is correct
66 Correct 284 ms 27128 KB Output is correct
67 Correct 452 ms 31760 KB Output is correct
68 Correct 292 ms 27128 KB Output is correct
69 Execution timed out 5038 ms 15964 KB Time limit exceeded
70 Halted 0 ms 0 KB -