oj.uz

답안 #727647

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
727647 2023-04-21T05:00:39 Z SanguineChameleon 철인 이종 경기 (APIO18_duathlon) C++17
49 / 100
 86 ms 15756 KB 
#include <bits/stdc++.h>
using namespace std;

void just_do_it();

int main() {
	#ifdef KAMIRULEZ
		freopen("kamirulez.inp", "r", stdin);
		freopen("kamirulez.out", "w", stdout);
	#endif
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	just_do_it();
	return 0;
}

const int maxn = 1e5 + 20;
vector<int> adj[maxn];
vector<int> comp;
bool can[55][55][55];
bool bad[maxn];
bool flag[maxn];
int par[maxn];
int depth[maxn];
int high[maxn];
int sz[maxn];
int node_cnt = 0;
int edge_cnt = 0;
int n, m;

void dfs1(int x, int a, int b) {
	can[x][a][b] = true;
	for (auto c: adj[b]) {
		if (c != x && !can[x][a][c]) {
			dfs1(x, a, c);
		}
	}
}

void dfs2(int u, int p) {
	par[u] = p;
	high[u] = depth[u];
	comp.push_back(u);
	flag[u] = true;
	node_cnt++;
	edge_cnt += adj[u].size();
	sz[u] = 1;
	for (auto v: adj[u]) {
		if (v == p) {
			continue;
		}
		if (!flag[v]) {
			depth[v] = depth[u] + 1;
			dfs2(v, u);
			sz[u] += sz[v];
			high[u] = min(high[u], high[v]);
		}
		else {
			high[u] = min(high[u], depth[v]);
		}
	}
}

void sub1() {
	for (int x = 1; x <= n; x++) {
		for (int a = 1; a <= n; a++) {
			if (a != x) {
				dfs1(x, a, a);
			}
		}
		bad[x] = false;
	}
	int res = 0;
	for (int a = 1; a <= n; a++) {
		for (int b = 1; b <= n; b++) {
			if (b == a) {
				continue;
			}
			for (int c = 1; c <= n; c++) {
				if (c == a || c == b) {
					continue;
				}
				bool ok = true;
				for (int x = 1; x <= n; x++) {
					if (x == b) {
						continue;
					}
					if (!can[x][a][b] && !can[x][b][c]) {
						ok = false;
						break;
					}
				}
				if (ok) {
					res++;
				}
			}
		}
	}
	cout << res;
}

long long solve(int root) {
	comp.clear();
	node_cnt = 0;
	edge_cnt = 0;
	dfs2(root, -1);
	edge_cnt /= 2;
	if (node_cnt == edge_cnt) {
		return 1LL * node_cnt * (node_cnt - 1) * (node_cnt - 2);
	}
	long long res = 0;
	for (auto u: comp) {
		res += 1LL * (sz[u] - 1) * (node_cnt - sz[u]) * 2;
	}
	return res;
}

long long dfs3(int u) {
	int cnt = 1;
	for (auto v: adj[u]) {
		if (par[v] == u && high[v] >= depth[u]) {
			cnt += sz[v];
		}
	}
	long long res = 1LL * cnt * (cnt - 1);
	for (auto v: adj[u]) {
		if (par[v] == u && high[v] < depth[u]) {
			res += dfs3(v);
		}
	}
	return res;
}

void sub8() {
	long long res = 0;
	for (int u = 1; u <= n; u++) {
		node_cnt = 0;
		for (int i = 1; i <= n; i++) {
			flag[i] = false;
		}
		depth[u] = 0;
		dfs2(u, -1);
		res += 1LL * (node_cnt - 1) * (node_cnt - 2);
		for (auto v: adj[u]) {
			if (par[v] == u) {
				res -= dfs3(v);
			}
		}
	}
	cout << res;
}

void just_do_it() {
	cin >> n >> m;
	for (int i = 0; i < m; i++) {
		int u, v;
		cin >> u >> v;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	if (n <= 50) {
		sub1();
		return;
	}
	if (n <= 1000) {
		sub8();
		return;
	}
	long long res = 0;
	for (int i = 1; i <= n; i++) {
		if (!flag[i]) {
			res += solve(i);
		}
	}
	cout << res;
	return;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 1 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 1 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 1 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 1 ms 2644 KB Output is correct
31 Correct 1 ms 2644 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 2 ms 2644 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 1 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 1 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 1 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 1 ms 2644 KB Output is correct
31 Correct 1 ms 2644 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 2 ms 2644 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 2 ms 2772 KB Output is correct
37 Correct 2 ms 2772 KB Output is correct
38 Correct 8 ms 2832 KB Output is correct
39 Correct 12 ms 2772 KB Output is correct
40 Correct 12 ms 2772 KB Output is correct
41 Correct 2 ms 2772 KB Output is correct
42 Correct 2 ms 2772 KB Output is correct
43 Correct 2 ms 2772 KB Output is correct
44 Correct 3 ms 2772 KB Output is correct
45 Correct 2 ms 2772 KB Output is correct
46 Correct 3 ms 2732 KB Output is correct
47 Correct 2 ms 2644 KB Output is correct
48 Correct 2 ms 2772 KB Output is correct
49 Correct 2 ms 2772 KB Output is correct
50 Correct 2 ms 2772 KB Output is correct
51 Correct 8 ms 2772 KB Output is correct
52 Correct 6 ms 2832 KB Output is correct
53 Correct 9 ms 2772 KB Output is correct
54 Correct 10 ms 2772 KB Output is correct
55 Correct 10 ms 2832 KB Output is correct
56 Correct 10 ms 2832 KB Output is correct
57 Correct 8 ms 2772 KB Output is correct
58 Correct 12 ms 2772 KB Output is correct
59 Correct 7 ms 2772 KB Output is correct
60 Correct 6 ms 2772 KB Output is correct
61 Correct 4 ms 2772 KB Output is correct
62 Correct 3 ms 2772 KB Output is correct
63 Correct 8 ms 2772 KB Output is correct
64 Correct 7 ms 2828 KB Output is correct
65 Correct 7 ms 2772 KB Output is correct

Subtask #3
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 57 ms 15756 KB Output is correct
2 Correct 64 ms 15736 KB Output is correct
3 Incorrect 56 ms 11692 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 26 ms 6892 KB Output is correct
2 Correct 26 ms 6988 KB Output is correct
3 Correct 27 ms 6988 KB Output is correct
4 Correct 34 ms 7060 KB Output is correct
5 Correct 28 ms 6984 KB Output is correct
6 Correct 28 ms 6984 KB Output is correct
7 Correct 33 ms 6964 KB Output is correct
8 Correct 30 ms 6980 KB Output is correct
9 Correct 29 ms 7016 KB Output is correct
10 Correct 22 ms 6988 KB Output is correct
11 Correct 20 ms 6988 KB Output is correct
12 Correct 11 ms 4944 KB Output is correct
13 Correct 6 ms 3796 KB Output is correct
14 Correct 2 ms 2900 KB Output is correct
15 Correct 2 ms 2772 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 23 ms 6980 KB Output is correct
18 Correct 19 ms 6996 KB Output is correct
19 Correct 20 ms 6980 KB Output is correct
20 Correct 21 ms 6980 KB Output is correct

Subtask #5
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 40 ms 8144 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 6988 KB Output is correct
2 Correct 27 ms 6980 KB Output is correct
3 Correct 28 ms 6984 KB Output is correct
4 Correct 28 ms 6980 KB Output is correct
5 Correct 28 ms 6892 KB Output is correct
6 Correct 33 ms 6984 KB Output is correct
7 Correct 29 ms 6984 KB Output is correct
8 Correct 30 ms 6984 KB Output is correct
9 Correct 33 ms 6984 KB Output is correct
10 Correct 31 ms 6916 KB Output is correct
11 Correct 32 ms 6984 KB Output is correct
12 Correct 32 ms 7028 KB Output is correct
13 Correct 31 ms 6984 KB Output is correct
14 Correct 30 ms 7040 KB Output is correct
15 Correct 31 ms 6932 KB Output is correct
16 Correct 23 ms 6980 KB Output is correct
17 Correct 19 ms 6924 KB Output is correct
18 Correct 9 ms 3792 KB Output is correct
19 Correct 2 ms 2772 KB Output is correct
20 Correct 2 ms 2772 KB Output is correct
21 Correct 28 ms 6976 KB Output is correct
22 Correct 28 ms 6980 KB Output is correct
23 Correct 29 ms 6904 KB Output is correct
24 Correct 27 ms 6980 KB Output is correct
25 Correct 1 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct

Subtask #7
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 44 ms 8216 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 1 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 1 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 1 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 1 ms 2644 KB Output is correct
31 Correct 1 ms 2644 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 2 ms 2644 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 2 ms 2772 KB Output is correct
37 Correct 2 ms 2772 KB Output is correct
38 Correct 8 ms 2832 KB Output is correct
39 Correct 12 ms 2772 KB Output is correct
40 Correct 12 ms 2772 KB Output is correct
41 Correct 2 ms 2772 KB Output is correct
42 Correct 2 ms 2772 KB Output is correct
43 Correct 2 ms 2772 KB Output is correct
44 Correct 3 ms 2772 KB Output is correct
45 Correct 2 ms 2772 KB Output is correct
46 Correct 3 ms 2732 KB Output is correct
47 Correct 2 ms 2644 KB Output is correct
48 Correct 2 ms 2772 KB Output is correct
49 Correct 2 ms 2772 KB Output is correct
50 Correct 2 ms 2772 KB Output is correct
51 Correct 8 ms 2772 KB Output is correct
52 Correct 6 ms 2832 KB Output is correct
53 Correct 9 ms 2772 KB Output is correct
54 Correct 10 ms 2772 KB Output is correct
55 Correct 10 ms 2832 KB Output is correct
56 Correct 10 ms 2832 KB Output is correct
57 Correct 8 ms 2772 KB Output is correct
58 Correct 12 ms 2772 KB Output is correct
59 Correct 7 ms 2772 KB Output is correct
60 Correct 6 ms 2772 KB Output is correct
61 Correct 4 ms 2772 KB Output is correct
62 Correct 3 ms 2772 KB Output is correct
63 Correct 8 ms 2772 KB Output is correct
64 Correct 7 ms 2828 KB Output is correct
65 Correct 7 ms 2772 KB Output is correct
66 Correct 2 ms 2644 KB Output is correct
67 Correct 2 ms 2900 KB Output is correct
68 Correct 35 ms 6944 KB Output is correct
69 Correct 70 ms 6984 KB Output is correct
70 Correct 86 ms 6980 KB Output is correct
71 Correct 2 ms 2772 KB Output is correct
72 Correct 2 ms 2772 KB Output is correct
73 Correct 2 ms 2772 KB Output is correct
74 Correct 2 ms 2772 KB Output is correct
75 Correct 2 ms 2772 KB Output is correct
76 Correct 1 ms 2644 KB Output is correct
77 Correct 28 ms 6912 KB Output is correct
78 Correct 29 ms 6988 KB Output is correct
79 Correct 30 ms 6884 KB Output is correct
80 Correct 36 ms 6984 KB Output is correct
81 Correct 31 ms 6984 KB Output is correct
82 Correct 36 ms 7004 KB Output is correct
83 Correct 46 ms 6928 KB Output is correct
84 Correct 31 ms 6952 KB Output is correct
85 Correct 30 ms 6988 KB Output is correct
86 Correct 29 ms 6932 KB Output is correct
87 Correct 12 ms 4948 KB Output is correct
88 Correct 12 ms 4944 KB Output is correct
89 Correct 3 ms 2772 KB Output is correct
90 Correct 2 ms 2772 KB Output is correct
91 Correct 31 ms 6892 KB Output is correct
92 Correct 30 ms 6956 KB Output is correct

Subtask #9
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 1 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 1 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 1 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 1 ms 2644 KB Output is correct
31 Correct 1 ms 2644 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 2 ms 2644 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 2 ms 2772 KB Output is correct
37 Correct 2 ms 2772 KB Output is correct
38 Correct 8 ms 2832 KB Output is correct
39 Correct 12 ms 2772 KB Output is correct
40 Correct 12 ms 2772 KB Output is correct
41 Correct 2 ms 2772 KB Output is correct
42 Correct 2 ms 2772 KB Output is correct
43 Correct 2 ms 2772 KB Output is correct
44 Correct 3 ms 2772 KB Output is correct
45 Correct 2 ms 2772 KB Output is correct
46 Correct 3 ms 2732 KB Output is correct
47 Correct 2 ms 2644 KB Output is correct
48 Correct 2 ms 2772 KB Output is correct
49 Correct 2 ms 2772 KB Output is correct
50 Correct 2 ms 2772 KB Output is correct
51 Correct 8 ms 2772 KB Output is correct
52 Correct 6 ms 2832 KB Output is correct
53 Correct 9 ms 2772 KB Output is correct
54 Correct 10 ms 2772 KB Output is correct
55 Correct 10 ms 2832 KB Output is correct
56 Correct 10 ms 2832 KB Output is correct
57 Correct 8 ms 2772 KB Output is correct
58 Correct 12 ms 2772 KB Output is correct
59 Correct 7 ms 2772 KB Output is correct
60 Correct 6 ms 2772 KB Output is correct
61 Correct 4 ms 2772 KB Output is correct
62 Correct 3 ms 2772 KB Output is correct
63 Correct 8 ms 2772 KB Output is correct
64 Correct 7 ms 2828 KB Output is correct
65 Correct 7 ms 2772 KB Output is correct
66 Correct 57 ms 15756 KB Output is correct
67 Correct 64 ms 15736 KB Output is correct
68 Incorrect 56 ms 11692 KB Output isn't correct
69 Halted 0 ms 0 KB -