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Submission #382339

# Submission time Handle Problem Language Result Execution time Memory
382339 2021-03-27T06:14:35 Z alireza_kaviani Parachute rings (IOI12_rings) C++11
100 / 100
 2154 ms 135056 KB 
#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

#define X			first
#define Y			second

const int MAXN = 1e6 + 10;

int n , flag , invalid[5] , cycle[5] , root[5] , sz[5][MAXN] , par[5][MAXN] , deg[5][MAXN];
vector<int> adj[MAXN];
vector<pii> E;

void Init(int N_) {
	n = N_;
	for(int i = 0 ; i < 5 ; i++){
		fill(par[i] , par[i] + MAXN , -1);
		fill(sz[i] , sz[i] + MAXN , 1);
		root[i] = -1;
	}
	root[0] = 0;
}

int Find(int ind , int v){
	return (par[ind][v] == -1 ? v : par[ind][v] = Find(ind , par[ind][v]));
}

void Union(int ind , int v , int u){
	v = Find(ind , v); u = Find(ind , u);
	if(v == u)	return;
	if(sz[ind][v] < sz[ind][u])	swap(v , u);
	par[ind][u] = v;
	sz[ind][v] += sz[ind][u];
}

void add(int ind , int v , int u){
	if(root[ind] == -1)	return;
	if(v == root[ind] || u == root[ind])	return;
	deg[ind][v]++; deg[ind][u]++;
	if(deg[ind][v] >= 3 || deg[ind][u] >= 3)	invalid[ind] = 1;
	if(Find(ind , v) == Find(ind , u)){
		if(cycle[ind] != 0)	cycle[ind] = -1;
		else	cycle[ind] = sz[ind][Find(ind , v)];
	}
	else	Union(ind , v , u);
}

void Link(int A, int B) {
	A++; B++;
	E.push_back({A , B});
	adj[A].push_back(B);
	adj[B].push_back(A);
	for(int i = 0 ; i < 5 ; i++)	add(i , A , B);
	if(flag)	return;
	if(deg[0][A] < deg[0][B])	swap(A , B);
	if(deg[0][A] >= 3){
		flag = 1;
		root[1] = A; root[2] = adj[A][0];
		root[3] = adj[A][1]; root[4] = adj[A][2];
		for(pii i : E){
			for(int j = 1 ; j < 5 ; j++)	add(j , i.X , i.Y);
		}
	}
}

int CountCritical() {
	if(invalid[0] == 0){
		if(cycle[0] == 0)	return n;
		if(cycle[0] > 0)	return cycle[0];
	}
	int ans = 0;
	for(int i = 0 ; i < 5 ; i++){
		if(root[i] != -1 && invalid[i] == 0 && cycle[i] == 0)	ans++;
	}
	return ans;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 62956 KB Output is correct
2 Correct 41 ms 63212 KB Output is correct
3 Correct 41 ms 63340 KB Output is correct
4 Correct 38 ms 62976 KB Output is correct
5 Correct 40 ms 63084 KB Output is correct
6 Correct 40 ms 63340 KB Output is correct
7 Correct 39 ms 63084 KB Output is correct
8 Correct 44 ms 63212 KB Output is correct
9 Correct 41 ms 63340 KB Output is correct
10 Correct 41 ms 63348 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 460 ms 85332 KB Output is correct
2 Correct 1756 ms 110060 KB Output is correct
3 Correct 2023 ms 117424 KB Output is correct
4 Correct 1143 ms 106312 KB Output is correct
5 Correct 1171 ms 119572 KB Output is correct
6 Correct 1120 ms 117972 KB Output is correct
7 Correct 1929 ms 128596 KB Output is correct
8 Correct 1989 ms 130460 KB Output is correct
9 Correct 2154 ms 135056 KB Output is correct
10 Correct 766 ms 116688 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 62956 KB Output is correct
2 Correct 41 ms 63212 KB Output is correct
3 Correct 41 ms 63340 KB Output is correct
4 Correct 38 ms 62976 KB Output is correct
5 Correct 40 ms 63084 KB Output is correct
6 Correct 40 ms 63340 KB Output is correct
7 Correct 39 ms 63084 KB Output is correct
8 Correct 44 ms 63212 KB Output is correct
9 Correct 41 ms 63340 KB Output is correct
10 Correct 41 ms 63348 KB Output is correct
11 Correct 42 ms 63340 KB Output is correct
12 Correct 46 ms 63724 KB Output is correct
13 Correct 46 ms 63724 KB Output is correct
14 Correct 46 ms 63468 KB Output is correct
15 Correct 44 ms 63724 KB Output is correct
16 Correct 49 ms 63596 KB Output is correct
17 Correct 46 ms 63724 KB Output is correct
18 Correct 49 ms 64000 KB Output is correct
19 Correct 45 ms 63596 KB Output is correct
20 Correct 46 ms 63852 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 62956 KB Output is correct
2 Correct 41 ms 63212 KB Output is correct
3 Correct 41 ms 63340 KB Output is correct
4 Correct 38 ms 62976 KB Output is correct
5 Correct 40 ms 63084 KB Output is correct
6 Correct 40 ms 63340 KB Output is correct
7 Correct 39 ms 63084 KB Output is correct
8 Correct 44 ms 63212 KB Output is correct
9 Correct 41 ms 63340 KB Output is correct
10 Correct 41 ms 63348 KB Output is correct
11 Correct 42 ms 63340 KB Output is correct
12 Correct 46 ms 63724 KB Output is correct
13 Correct 46 ms 63724 KB Output is correct
14 Correct 46 ms 63468 KB Output is correct
15 Correct 44 ms 63724 KB Output is correct
16 Correct 49 ms 63596 KB Output is correct
17 Correct 46 ms 63724 KB Output is correct
18 Correct 49 ms 64000 KB Output is correct
19 Correct 45 ms 63596 KB Output is correct
20 Correct 46 ms 63852 KB Output is correct
21 Correct 59 ms 64928 KB Output is correct
22 Correct 73 ms 65764 KB Output is correct
23 Correct 81 ms 66660 KB Output is correct
24 Correct 125 ms 67556 KB Output is correct
25 Correct 59 ms 65516 KB Output is correct
26 Correct 115 ms 68452 KB Output is correct
27 Correct 90 ms 67808 KB Output is correct
28 Correct 138 ms 69216 KB Output is correct
29 Correct 100 ms 67432 KB Output is correct
30 Correct 116 ms 68584 KB Output is correct

Subtask #5
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 62956 KB Output is correct
2 Correct 41 ms 63212 KB Output is correct
3 Correct 41 ms 63340 KB Output is correct
4 Correct 38 ms 62976 KB Output is correct
5 Correct 40 ms 63084 KB Output is correct
6 Correct 40 ms 63340 KB Output is correct
7 Correct 39 ms 63084 KB Output is correct
8 Correct 44 ms 63212 KB Output is correct
9 Correct 41 ms 63340 KB Output is correct
10 Correct 41 ms 63348 KB Output is correct
11 Correct 460 ms 85332 KB Output is correct
12 Correct 1756 ms 110060 KB Output is correct
13 Correct 2023 ms 117424 KB Output is correct
14 Correct 1143 ms 106312 KB Output is correct
15 Correct 1171 ms 119572 KB Output is correct
16 Correct 1120 ms 117972 KB Output is correct
17 Correct 1929 ms 128596 KB Output is correct
18 Correct 1989 ms 130460 KB Output is correct
19 Correct 2154 ms 135056 KB Output is correct
20 Correct 766 ms 116688 KB Output is correct
21 Correct 42 ms 63340 KB Output is correct
22 Correct 46 ms 63724 KB Output is correct
23 Correct 46 ms 63724 KB Output is correct
24 Correct 46 ms 63468 KB Output is correct
25 Correct 44 ms 63724 KB Output is correct
26 Correct 49 ms 63596 KB Output is correct
27 Correct 46 ms 63724 KB Output is correct
28 Correct 49 ms 64000 KB Output is correct
29 Correct 45 ms 63596 KB Output is correct
30 Correct 46 ms 63852 KB Output is correct
31 Correct 59 ms 64928 KB Output is correct
32 Correct 73 ms 65764 KB Output is correct
33 Correct 81 ms 66660 KB Output is correct
34 Correct 125 ms 67556 KB Output is correct
35 Correct 59 ms 65516 KB Output is correct
36 Correct 115 ms 68452 KB Output is correct
37 Correct 90 ms 67808 KB Output is correct
38 Correct 138 ms 69216 KB Output is correct
39 Correct 100 ms 67432 KB Output is correct
40 Correct 116 ms 68584 KB Output is correct
41 Correct 262 ms 78556 KB Output is correct
42 Correct 895 ms 105632 KB Output is correct
43 Correct 366 ms 88676 KB Output is correct
44 Correct 1308 ms 128332 KB Output is correct
45 Correct 1299 ms 118128 KB Output is correct
46 Correct 747 ms 110792 KB Output is correct
47 Correct 1038 ms 111660 KB Output is correct
48 Correct 840 ms 108032 KB Output is correct
49 Correct 759 ms 108616 KB Output is correct
50 Correct 863 ms 108004 KB Output is correct
51 Correct 500 ms 88592 KB Output is correct
52 Correct 1178 ms 116232 KB Output is correct
53 Correct 890 ms 108620 KB Output is correct
54 Correct 1832 ms 122252 KB Output is correct
55 Correct 2019 ms 126996 KB Output is correct