oj.uz

Submission #517007

# Submission time Handle Problem Language Result Execution time Memory
517007 2022-01-22T11:07:47 Z shmad Duathlon (APIO18_duathlon) C++17
24 / 100
 73 ms 46288 KB 
#pragma GCC optimize("O3", "unroll-loops")
#pragma GCC target("avx2", "bmi", "bmi2", "lzcnt", "popcnt") 

#include <bits/stdc++.h>

#define int long long
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define ff first
#define ss second
#define dbg(x) cerr << #x << " = " << x << '\n'

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vvi = vt< vt<int> >;

const int N = 1e6 + 5, mod = 1e9 + 7, inf = 1e18 + 7, B = 500, LIM = (1ll << 60);
const double eps = 1e-6;

int n, m, sz;
vt<int> g[N], used(N), col(N);
bool ok, cycle;

void dfs (int v, int s, int c, int f, bool check = 0) {
	used[v] = 1;
	if (v == f) {
		ok |= check;
		return;
	}
	if (ok) return;
	if (v == c) check = 1;
	for (auto to: g[v]) {
		if (!used[to]) {
			dfs(to, s, c, f, check);
			used[to] = 0;
		}
	}
}

void dfs (int v, int p = -1) {
	col[v] = 1;
	sz++;
	for (auto to: g[v]) {
		if (to != p) {
			if (col[to] == 1) cycle = 1;
			if (col[to] == 0) dfs(to, v);
		}
	}
	col[v] = 2;
}

void solve_1 () {
	int ans = 0;
	used.resize(200);
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= n; j++) {
			for (int k = 1; k <= n; k++) {
				if (i == j || i == k || j == k) continue;
				ok = 0;
				fill(all(used), 0);
				dfs(i, i, j, k);
				if (ok) ans++;
			}
		}
	}
	cout << ans << '\n';
}

bool cum[51][51][51];

void paint (int v, int p, int colour) {
 	col[v] = colour;
 	for (auto to : g[v])
  		if (to != p && !col[to]) paint(to, p, colour);
}

void solve_2 () {
	int ans = 0;
	for (int p = 1; p <= n; p++) {
		fill(all(col), 0);
		int colour = 0;
		for (int v = 1; v <= n; v++) {
			if (v != p && !col[v]) paint(v, p, ++colour);
		}
		for (int s = 1; s <= n; s++) {
			for (int c = 1; c <= n; c++) {
				if (c == p || col[c] == col[s]) continue;
				for (int f = 1; f <= n; f++) {
					if (f == s || col[f] == col[c] || cum[s][f][c]) continue;
					ans--;
					cum[s][f][c] = 1;
				}
			}
		}
	}
	ans += (n * (n - 1) * (n - 2));
	cout << ans << '\n';
}

void solve_3 () {
    int ans = 0;
	for (int i = 1; i <= n; i++) {
		if (!col[i]) {
			sz = cycle = 0;
			dfs(i);
			int x = sz * (sz - 1) * (sz - 2);
			if (!cycle) x /= 3;
			ans += x;
		}
	}
	cout << ans << '\n';	
}

void solve () {
	cin >> n >> m;
	bool sub1 = (n <= 10 && m <= 100), sub2 = (n <= 50 && m <= 100), sub3 = 1;
	for (int i = 1; i <= m; i++) {
		int x, y;
		cin >> x >> y;
		g[x].pb(y);
		g[y].pb(x);
		if (max(sz(g[x]), sz(g[y])) > 2) sub3 = 0;
	}
	if (sub1) {
		solve_1();
		return;
	}
	if (sub2) {
	 	solve_2();
	 	return;
	}
	if (sub3) {
		solve_3();
		return;
	}
	cout << '\n';
}

bool testcases = 0;
                  
signed main() {
#ifdef ONLINE_JUDGE
	freopen(".in", "r", stdin);
	freopen(".out", "w", stdout);
#endif
    cin.tie(0) -> sync_with_stdio(0);
    int test = 1;
    if (testcases) cin >> test;
    for (int cs = 1; cs <= test; cs++) {
        solve();
    }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 39372 KB Output is correct
2 Correct 19 ms 39372 KB Output is correct
3 Correct 19 ms 39420 KB Output is correct
4 Correct 19 ms 39368 KB Output is correct
5 Correct 19 ms 39372 KB Output is correct
6 Correct 19 ms 39476 KB Output is correct
7 Correct 24 ms 39384 KB Output is correct
8 Correct 24 ms 39372 KB Output is correct
9 Correct 19 ms 39452 KB Output is correct
10 Correct 20 ms 39460 KB Output is correct
11 Correct 20 ms 39372 KB Output is correct
12 Correct 19 ms 39456 KB Output is correct
13 Correct 19 ms 39496 KB Output is correct
14 Correct 19 ms 39372 KB Output is correct
15 Correct 20 ms 39372 KB Output is correct
16 Correct 19 ms 39372 KB Output is correct
17 Correct 20 ms 39468 KB Output is correct
18 Correct 24 ms 39372 KB Output is correct
19 Correct 19 ms 39372 KB Output is correct
20 Correct 22 ms 39420 KB Output is correct
21 Correct 20 ms 39416 KB Output is correct
22 Correct 20 ms 39376 KB Output is correct
23 Correct 21 ms 39460 KB Output is correct
24 Correct 19 ms 39372 KB Output is correct
25 Correct 19 ms 39456 KB Output is correct
26 Correct 20 ms 39456 KB Output is correct
27 Correct 20 ms 39428 KB Output is correct
28 Correct 22 ms 39372 KB Output is correct
29 Correct 19 ms 39420 KB Output is correct
30 Correct 21 ms 39372 KB Output is correct
31 Correct 24 ms 39372 KB Output is correct
32 Correct 19 ms 39416 KB Output is correct
33 Correct 20 ms 39396 KB Output is correct
34 Correct 19 ms 39420 KB Output is correct
35 Correct 20 ms 39412 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 39372 KB Output is correct
2 Correct 19 ms 39372 KB Output is correct
3 Correct 19 ms 39420 KB Output is correct
4 Correct 19 ms 39368 KB Output is correct
5 Correct 19 ms 39372 KB Output is correct
6 Correct 19 ms 39476 KB Output is correct
7 Correct 24 ms 39384 KB Output is correct
8 Correct 24 ms 39372 KB Output is correct
9 Correct 19 ms 39452 KB Output is correct
10 Correct 20 ms 39460 KB Output is correct
11 Correct 20 ms 39372 KB Output is correct
12 Correct 19 ms 39456 KB Output is correct
13 Correct 19 ms 39496 KB Output is correct
14 Correct 19 ms 39372 KB Output is correct
15 Correct 20 ms 39372 KB Output is correct
16 Correct 19 ms 39372 KB Output is correct
17 Correct 20 ms 39468 KB Output is correct
18 Correct 24 ms 39372 KB Output is correct
19 Correct 19 ms 39372 KB Output is correct
20 Correct 22 ms 39420 KB Output is correct
21 Correct 20 ms 39416 KB Output is correct
22 Correct 20 ms 39376 KB Output is correct
23 Correct 21 ms 39460 KB Output is correct
24 Correct 19 ms 39372 KB Output is correct
25 Correct 19 ms 39456 KB Output is correct
26 Correct 20 ms 39456 KB Output is correct
27 Correct 20 ms 39428 KB Output is correct
28 Correct 22 ms 39372 KB Output is correct
29 Correct 19 ms 39420 KB Output is correct
30 Correct 21 ms 39372 KB Output is correct
31 Correct 24 ms 39372 KB Output is correct
32 Correct 19 ms 39416 KB Output is correct
33 Correct 20 ms 39396 KB Output is correct
34 Correct 19 ms 39420 KB Output is correct
35 Correct 20 ms 39412 KB Output is correct
36 Correct 52 ms 39596 KB Output is correct
37 Correct 73 ms 39456 KB Output is correct
38 Correct 50 ms 39480 KB Output is correct
39 Correct 45 ms 39520 KB Output is correct
40 Correct 43 ms 39480 KB Output is correct
41 Correct 53 ms 39480 KB Output is correct
42 Correct 51 ms 39560 KB Output is correct
43 Correct 49 ms 39504 KB Output is correct
44 Correct 54 ms 39496 KB Output is correct
45 Correct 51 ms 39480 KB Output is correct
46 Correct 59 ms 39580 KB Output is correct
47 Correct 21 ms 39376 KB Output is correct
48 Correct 54 ms 39572 KB Output is correct
49 Correct 57 ms 39604 KB Output is correct
50 Correct 58 ms 39588 KB Output is correct
51 Correct 49 ms 39588 KB Output is correct
52 Correct 50 ms 39460 KB Output is correct
53 Correct 43 ms 39504 KB Output is correct
54 Correct 50 ms 39484 KB Output is correct
55 Correct 39 ms 39460 KB Output is correct
56 Correct 40 ms 39504 KB Output is correct
57 Correct 48 ms 39460 KB Output is correct
58 Correct 42 ms 39604 KB Output is correct
59 Correct 48 ms 39496 KB Output is correct
60 Correct 45 ms 39496 KB Output is correct
61 Correct 52 ms 39588 KB Output is correct
62 Correct 64 ms 39460 KB Output is correct
63 Correct 48 ms 39592 KB Output is correct
64 Correct 45 ms 39592 KB Output is correct
65 Correct 44 ms 39460 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 46288 KB Output is correct
2 Correct 58 ms 46200 KB Output is correct
3 Correct 56 ms 44496 KB Output is correct
4 Correct 58 ms 45388 KB Output is correct
5 Correct 65 ms 43960 KB Output is correct
6 Correct 57 ms 43928 KB Output is correct
7 Correct 56 ms 43464 KB Output is correct
8 Correct 61 ms 43716 KB Output is correct
9 Correct 56 ms 43076 KB Output is correct
10 Correct 57 ms 43460 KB Output is correct
11 Correct 51 ms 42692 KB Output is correct
12 Correct 54 ms 42684 KB Output is correct
13 Correct 47 ms 42680 KB Output is correct
14 Correct 51 ms 42544 KB Output is correct
15 Correct 41 ms 42184 KB Output is correct
16 Correct 41 ms 42104 KB Output is correct
17 Correct 19 ms 39372 KB Output is correct
18 Correct 20 ms 39456 KB Output is correct
19 Correct 19 ms 39476 KB Output is correct
20 Correct 20 ms 39436 KB Output is correct
21 Correct 19 ms 39460 KB Output is correct
22 Correct 20 ms 39484 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 19 ms 39440 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 56 ms 43460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 24 ms 39464 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 50 ms 43312 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 39372 KB Output is correct
2 Correct 19 ms 39372 KB Output is correct
3 Correct 19 ms 39420 KB Output is correct
4 Correct 19 ms 39368 KB Output is correct
5 Correct 19 ms 39372 KB Output is correct
6 Correct 19 ms 39476 KB Output is correct
7 Correct 24 ms 39384 KB Output is correct
8 Correct 24 ms 39372 KB Output is correct
9 Correct 19 ms 39452 KB Output is correct
10 Correct 20 ms 39460 KB Output is correct
11 Correct 20 ms 39372 KB Output is correct
12 Correct 19 ms 39456 KB Output is correct
13 Correct 19 ms 39496 KB Output is correct
14 Correct 19 ms 39372 KB Output is correct
15 Correct 20 ms 39372 KB Output is correct
16 Correct 19 ms 39372 KB Output is correct
17 Correct 20 ms 39468 KB Output is correct
18 Correct 24 ms 39372 KB Output is correct
19 Correct 19 ms 39372 KB Output is correct
20 Correct 22 ms 39420 KB Output is correct
21 Correct 20 ms 39416 KB Output is correct
22 Correct 20 ms 39376 KB Output is correct
23 Correct 21 ms 39460 KB Output is correct
24 Correct 19 ms 39372 KB Output is correct
25 Correct 19 ms 39456 KB Output is correct
26 Correct 20 ms 39456 KB Output is correct
27 Correct 20 ms 39428 KB Output is correct
28 Correct 22 ms 39372 KB Output is correct
29 Correct 19 ms 39420 KB Output is correct
30 Correct 21 ms 39372 KB Output is correct
31 Correct 24 ms 39372 KB Output is correct
32 Correct 19 ms 39416 KB Output is correct
33 Correct 20 ms 39396 KB Output is correct
34 Correct 19 ms 39420 KB Output is correct
35 Correct 20 ms 39412 KB Output is correct
36 Correct 52 ms 39596 KB Output is correct
37 Correct 73 ms 39456 KB Output is correct
38 Correct 50 ms 39480 KB Output is correct
39 Correct 45 ms 39520 KB Output is correct
40 Correct 43 ms 39480 KB Output is correct
41 Correct 53 ms 39480 KB Output is correct
42 Correct 51 ms 39560 KB Output is correct
43 Correct 49 ms 39504 KB Output is correct
44 Correct 54 ms 39496 KB Output is correct
45 Correct 51 ms 39480 KB Output is correct
46 Correct 59 ms 39580 KB Output is correct
47 Correct 21 ms 39376 KB Output is correct
48 Correct 54 ms 39572 KB Output is correct
49 Correct 57 ms 39604 KB Output is correct
50 Correct 58 ms 39588 KB Output is correct
51 Correct 49 ms 39588 KB Output is correct
52 Correct 50 ms 39460 KB Output is correct
53 Correct 43 ms 39504 KB Output is correct
54 Correct 50 ms 39484 KB Output is correct
55 Correct 39 ms 39460 KB Output is correct
56 Correct 40 ms 39504 KB Output is correct
57 Correct 48 ms 39460 KB Output is correct
58 Correct 42 ms 39604 KB Output is correct
59 Correct 48 ms 39496 KB Output is correct
60 Correct 45 ms 39496 KB Output is correct
61 Correct 52 ms 39588 KB Output is correct
62 Correct 64 ms 39460 KB Output is correct
63 Correct 48 ms 39592 KB Output is correct
64 Correct 45 ms 39592 KB Output is correct
65 Correct 44 ms 39460 KB Output is correct
66 Correct 19 ms 39484 KB Output is correct
67 Incorrect 19 ms 39408 KB Output isn't correct
68 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 39372 KB Output is correct
2 Correct 19 ms 39372 KB Output is correct
3 Correct 19 ms 39420 KB Output is correct
4 Correct 19 ms 39368 KB Output is correct
5 Correct 19 ms 39372 KB Output is correct
6 Correct 19 ms 39476 KB Output is correct
7 Correct 24 ms 39384 KB Output is correct
8 Correct 24 ms 39372 KB Output is correct
9 Correct 19 ms 39452 KB Output is correct
10 Correct 20 ms 39460 KB Output is correct
11 Correct 20 ms 39372 KB Output is correct
12 Correct 19 ms 39456 KB Output is correct
13 Correct 19 ms 39496 KB Output is correct
14 Correct 19 ms 39372 KB Output is correct
15 Correct 20 ms 39372 KB Output is correct
16 Correct 19 ms 39372 KB Output is correct
17 Correct 20 ms 39468 KB Output is correct
18 Correct 24 ms 39372 KB Output is correct
19 Correct 19 ms 39372 KB Output is correct
20 Correct 22 ms 39420 KB Output is correct
21 Correct 20 ms 39416 KB Output is correct
22 Correct 20 ms 39376 KB Output is correct
23 Correct 21 ms 39460 KB Output is correct
24 Correct 19 ms 39372 KB Output is correct
25 Correct 19 ms 39456 KB Output is correct
26 Correct 20 ms 39456 KB Output is correct
27 Correct 20 ms 39428 KB Output is correct
28 Correct 22 ms 39372 KB Output is correct
29 Correct 19 ms 39420 KB Output is correct
30 Correct 21 ms 39372 KB Output is correct
31 Correct 24 ms 39372 KB Output is correct
32 Correct 19 ms 39416 KB Output is correct
33 Correct 20 ms 39396 KB Output is correct
34 Correct 19 ms 39420 KB Output is correct
35 Correct 20 ms 39412 KB Output is correct
36 Correct 52 ms 39596 KB Output is correct
37 Correct 73 ms 39456 KB Output is correct
38 Correct 50 ms 39480 KB Output is correct
39 Correct 45 ms 39520 KB Output is correct
40 Correct 43 ms 39480 KB Output is correct
41 Correct 53 ms 39480 KB Output is correct
42 Correct 51 ms 39560 KB Output is correct
43 Correct 49 ms 39504 KB Output is correct
44 Correct 54 ms 39496 KB Output is correct
45 Correct 51 ms 39480 KB Output is correct
46 Correct 59 ms 39580 KB Output is correct
47 Correct 21 ms 39376 KB Output is correct
48 Correct 54 ms 39572 KB Output is correct
49 Correct 57 ms 39604 KB Output is correct
50 Correct 58 ms 39588 KB Output is correct
51 Correct 49 ms 39588 KB Output is correct
52 Correct 50 ms 39460 KB Output is correct
53 Correct 43 ms 39504 KB Output is correct
54 Correct 50 ms 39484 KB Output is correct
55 Correct 39 ms 39460 KB Output is correct
56 Correct 40 ms 39504 KB Output is correct
57 Correct 48 ms 39460 KB Output is correct
58 Correct 42 ms 39604 KB Output is correct
59 Correct 48 ms 39496 KB Output is correct
60 Correct 45 ms 39496 KB Output is correct
61 Correct 52 ms 39588 KB Output is correct
62 Correct 64 ms 39460 KB Output is correct
63 Correct 48 ms 39592 KB Output is correct
64 Correct 45 ms 39592 KB Output is correct
65 Correct 44 ms 39460 KB Output is correct
66 Correct 69 ms 46288 KB Output is correct
67 Correct 58 ms 46200 KB Output is correct
68 Correct 56 ms 44496 KB Output is correct
69 Correct 58 ms 45388 KB Output is correct
70 Correct 65 ms 43960 KB Output is correct
71 Correct 57 ms 43928 KB Output is correct
72 Correct 56 ms 43464 KB Output is correct
73 Correct 61 ms 43716 KB Output is correct
74 Correct 56 ms 43076 KB Output is correct
75 Correct 57 ms 43460 KB Output is correct
76 Correct 51 ms 42692 KB Output is correct
77 Correct 54 ms 42684 KB Output is correct
78 Correct 47 ms 42680 KB Output is correct
79 Correct 51 ms 42544 KB Output is correct
80 Correct 41 ms 42184 KB Output is correct
81 Correct 41 ms 42104 KB Output is correct
82 Correct 19 ms 39372 KB Output is correct
83 Correct 20 ms 39456 KB Output is correct
84 Correct 19 ms 39476 KB Output is correct
85 Correct 20 ms 39436 KB Output is correct
86 Correct 19 ms 39460 KB Output is correct
87 Correct 20 ms 39484 KB Output is correct
88 Incorrect 19 ms 39440 KB Output isn't correct
89 Halted 0 ms 0 KB -