oj.uz

Submission #760712

# Submission time Handle Problem Language Result Execution time Memory
760712 2023-06-18T08:19:46 Z NothingXD Parachute rings (IOI12_rings) C++17
100 / 100
 1020 ms 89328 KB 
#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef complex<ld> point;

void debug_out(){cerr<<endl;}
template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T){
	cout << H << ' ';
	debug_out(T...);
}

#define debug(...) cerr << "(" << #__VA_ARGS__ << "): ", debug_out(__VA_ARGS__)
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define MP(x, y) make_pair(x, y)

const int maxn = 1e6 + 10;

int n, par[5][maxn], d[5][maxn], cycle;
bool bad[5];
vector<int> g[maxn], ver;

int getpar(int idx, int v){
	return (par[idx][v] < 0? v: par[idx][v] = getpar(idx, par[idx][v]));
}

bool merge(int idx, int x, int y){
	int u = getpar(idx, x);
	int v = getpar(idx, y);
	if (u == v) return false;
	par[idx][u] += par[idx][v];
	par[idx][v] = u;
	return true;
}

void Init(int N_) {
	memset(par, -1, sizeof par);
	n = N_;
}

void Link(int A, int B) {
	if (!bad[0]){
		g[A].push_back(B);
		g[B].push_back(A);
		if (g[A].size() == 3){
			bad[0] = true;
			ver.push_back(A);
			for (auto x: g[A])ver.push_back(x);
			for (int i = 1; i <= ver.size(); i++){
				for (int j = 0; j < n; j++){
					if (j == ver[i-1]) continue;
					for (auto u: g[j]){
						if (u < j || u == ver[i-1]) continue;
						d[i][j]++;
						d[i][u]++;
						if (max(d[i][j], d[i][u]) > 2 || !merge(i, j, u)) bad[i] = true;
					}
				}
			}
		}
		else if (g[B].size() == 3){
			bad[0] = true;
			ver.push_back(B);
			for (auto x: g[B])ver.push_back(x);
			for (int i = 1; i <= ver.size(); i++){
				for (int j = 0; j < n; j++){
					if (j == ver[i-1]) continue;
					for (auto u: g[j]){
						if (u < j || u == ver[i-1]) continue;
						d[i][j]++;
						d[i][u]++;
						if (max(d[i][j], d[i][u]) > 2 || !merge(i, j, u)) bad[i] = true;
					}
				}
			}
		}
		if (!merge(0, A, B)){
			if (cycle != 0) bad[0] = true;
			cycle = -par[0][getpar(0, A)];
		}
		return;
	}
	for (int i = 1; i <= ver.size(); i++){
		if (A != ver[i-1] && B != ver[i-1]){
			d[i][A]++;
			d[i][B]++;
			if (max(d[i][A], d[i][B]) > 2 || !merge(i, A, B)) bad[i] = true;
		}
	}
}

int CountCritical() {
	if (!bad[0]){
		if (cycle == 0) return n;
		return cycle;
	}
	int ans = 0;
	for (int i = 1; i <= ver.size(); i++){
		ans += (!bad[i]);
	}
	return ans;
}

Compilation message

rings.cpp: In function 'void Link(int, int)':
rings.cpp:56:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |    for (int i = 1; i <= ver.size(); i++){
      |                    ~~^~~~~~~~~~~~~
rings.cpp:72:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |    for (int i = 1; i <= ver.size(); i++){
      |                    ~~^~~~~~~~~~~~~
rings.cpp:90:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |  for (int i = 1; i <= ver.size(); i++){
      |                  ~~^~~~~~~~~~~~~
rings.cpp: In function 'int CountCritical()':
rings.cpp:105:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |  for (int i = 1; i <= ver.size(); i++){
      |                  ~~^~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 43368 KB Output is correct
2 Correct 20 ms 43476 KB Output is correct
3 Correct 20 ms 43476 KB Output is correct
4 Correct 19 ms 43356 KB Output is correct
5 Correct 20 ms 43456 KB Output is correct
6 Correct 21 ms 43488 KB Output is correct
7 Correct 19 ms 43392 KB Output is correct
8 Correct 21 ms 43476 KB Output is correct
9 Correct 20 ms 43604 KB Output is correct
10 Correct 22 ms 43536 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 243 ms 59656 KB Output is correct
2 Correct 595 ms 69836 KB Output is correct
3 Correct 492 ms 59440 KB Output is correct
4 Correct 669 ms 74648 KB Output is correct
5 Correct 667 ms 74644 KB Output is correct
6 Correct 637 ms 73592 KB Output is correct
7 Correct 473 ms 59572 KB Output is correct
8 Correct 851 ms 84364 KB Output is correct
9 Correct 1020 ms 89328 KB Output is correct
10 Correct 407 ms 72892 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 43368 KB Output is correct
2 Correct 20 ms 43476 KB Output is correct
3 Correct 20 ms 43476 KB Output is correct
4 Correct 19 ms 43356 KB Output is correct
5 Correct 20 ms 43456 KB Output is correct
6 Correct 21 ms 43488 KB Output is correct
7 Correct 19 ms 43392 KB Output is correct
8 Correct 21 ms 43476 KB Output is correct
9 Correct 20 ms 43604 KB Output is correct
10 Correct 22 ms 43536 KB Output is correct
11 Correct 20 ms 43592 KB Output is correct
12 Correct 22 ms 43860 KB Output is correct
13 Correct 21 ms 43788 KB Output is correct
14 Correct 20 ms 43492 KB Output is correct
15 Correct 21 ms 43732 KB Output is correct
16 Correct 22 ms 43604 KB Output is correct
17 Correct 21 ms 43604 KB Output is correct
18 Correct 22 ms 43732 KB Output is correct
19 Correct 22 ms 43676 KB Output is correct
20 Correct 23 ms 43732 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 43368 KB Output is correct
2 Correct 20 ms 43476 KB Output is correct
3 Correct 20 ms 43476 KB Output is correct
4 Correct 19 ms 43356 KB Output is correct
5 Correct 20 ms 43456 KB Output is correct
6 Correct 21 ms 43488 KB Output is correct
7 Correct 19 ms 43392 KB Output is correct
8 Correct 21 ms 43476 KB Output is correct
9 Correct 20 ms 43604 KB Output is correct
10 Correct 22 ms 43536 KB Output is correct
11 Correct 20 ms 43592 KB Output is correct
12 Correct 22 ms 43860 KB Output is correct
13 Correct 21 ms 43788 KB Output is correct
14 Correct 20 ms 43492 KB Output is correct
15 Correct 21 ms 43732 KB Output is correct
16 Correct 22 ms 43604 KB Output is correct
17 Correct 21 ms 43604 KB Output is correct
18 Correct 22 ms 43732 KB Output is correct
19 Correct 22 ms 43676 KB Output is correct
20 Correct 23 ms 43732 KB Output is correct
21 Correct 32 ms 44372 KB Output is correct
22 Correct 38 ms 44960 KB Output is correct
23 Correct 43 ms 45468 KB Output is correct
24 Correct 47 ms 45020 KB Output is correct
25 Correct 28 ms 45012 KB Output is correct
26 Correct 39 ms 45076 KB Output is correct
27 Correct 43 ms 45672 KB Output is correct
28 Correct 38 ms 44884 KB Output is correct
29 Correct 45 ms 45336 KB Output is correct
30 Correct 49 ms 46492 KB Output is correct

Subtask #5
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 43368 KB Output is correct
2 Correct 20 ms 43476 KB Output is correct
3 Correct 20 ms 43476 KB Output is correct
4 Correct 19 ms 43356 KB Output is correct
5 Correct 20 ms 43456 KB Output is correct
6 Correct 21 ms 43488 KB Output is correct
7 Correct 19 ms 43392 KB Output is correct
8 Correct 21 ms 43476 KB Output is correct
9 Correct 20 ms 43604 KB Output is correct
10 Correct 22 ms 43536 KB Output is correct
11 Correct 243 ms 59656 KB Output is correct
12 Correct 595 ms 69836 KB Output is correct
13 Correct 492 ms 59440 KB Output is correct
14 Correct 669 ms 74648 KB Output is correct
15 Correct 667 ms 74644 KB Output is correct
16 Correct 637 ms 73592 KB Output is correct
17 Correct 473 ms 59572 KB Output is correct
18 Correct 851 ms 84364 KB Output is correct
19 Correct 1020 ms 89328 KB Output is correct
20 Correct 407 ms 72892 KB Output is correct
21 Correct 20 ms 43592 KB Output is correct
22 Correct 22 ms 43860 KB Output is correct
23 Correct 21 ms 43788 KB Output is correct
24 Correct 20 ms 43492 KB Output is correct
25 Correct 21 ms 43732 KB Output is correct
26 Correct 22 ms 43604 KB Output is correct
27 Correct 21 ms 43604 KB Output is correct
28 Correct 22 ms 43732 KB Output is correct
29 Correct 22 ms 43676 KB Output is correct
30 Correct 23 ms 43732 KB Output is correct
31 Correct 32 ms 44372 KB Output is correct
32 Correct 38 ms 44960 KB Output is correct
33 Correct 43 ms 45468 KB Output is correct
34 Correct 47 ms 45020 KB Output is correct
35 Correct 28 ms 45012 KB Output is correct
36 Correct 39 ms 45076 KB Output is correct
37 Correct 43 ms 45672 KB Output is correct
38 Correct 38 ms 44884 KB Output is correct
39 Correct 45 ms 45336 KB Output is correct
40 Correct 49 ms 46492 KB Output is correct
41 Correct 144 ms 51944 KB Output is correct
42 Correct 394 ms 69012 KB Output is correct
43 Correct 194 ms 59556 KB Output is correct
44 Correct 390 ms 58228 KB Output is correct
45 Correct 398 ms 61136 KB Output is correct
46 Correct 370 ms 69588 KB Output is correct
47 Correct 554 ms 70560 KB Output is correct
48 Correct 316 ms 61068 KB Output is correct
49 Correct 439 ms 69068 KB Output is correct
50 Correct 435 ms 68760 KB Output is correct
51 Correct 203 ms 57228 KB Output is correct
52 Correct 337 ms 55608 KB Output is correct
53 Correct 306 ms 60308 KB Output is correct
54 Correct 677 ms 75420 KB Output is correct
55 Correct 516 ms 57684 KB Output is correct