oj.uz

Submission #285233

# Submission time Handle Problem Language Result Execution time Memory
285233 2020-08-28T12:32:00 Z TMJN Parachute rings (IOI12_rings) C++17
100 / 100
 1633 ms 88440 KB 
#include <bits/stdc++.h>
using namespace std;
struct UF{
	int t[1000000];
	void init(){
		for(int i=0;i<1000000;i++){
			t[i]=-1;
		}
	}
	int par(int x){
		if(t[x]<0)return x;
		return t[x]=par(t[x]);
	}
	bool uni(int x,int y){
		x=par(x);
		y=par(y);
		if(x==y)return false;
		if(t[x]<t[y]){
			t[x]+=t[y];
			t[y]=x;
		}
		else{
			t[y]+=t[x];
			t[x]=y;
		}
		return true;
	}
};

int phase,p[4];
UF uf,up[4];
int c[1000000],res;
bool b[4];
vector<int>e[1000000];


void Init(int N) {
	res=N;
	uf.init();
	for(int i=0;i<4;i++){
		up[i].init();
	}
}

void Link(int A, int B) {
	e[A].push_back(B);
	e[B].push_back(A);
	if(phase==0){
		if(e[A].size()==3){
			phase=2;
			for(int i=0;i<3;i++){
				p[i]=e[A][i];
			}
			p[3]=A;
			for(int i=0;i<4;i++){
				b[i]=true;
			}
			for(int i=0;i<4;i++){
				for(int j=0;j<1000000;j++){
					if(p[i]==j)continue;
					int c=0;
					for(int k:e[j]){
						if(p[i]==k)continue;
						c++;
						if(j<k)continue;
						if(!up[i].uni(j,k)){
							b[i]=false;
						}
					}
					if(c>=3)b[i]=false;
				}
			}
		}
		else if(e[B].size()==3){
			phase=2;
			for(int i=0;i<3;i++){
				p[i]=e[B][i];
			}
			p[3]=B;
			for(int i=0;i<4;i++){
				b[i]=true;
			}
			for(int i=0;i<4;i++){
				for(int j=0;j<1000000;j++){
					if(p[i]==j)continue;
					int c=0;
					for(int k:e[j]){
						if(p[i]==k)continue;
						c++;
						if(j<k)continue;
						if(!up[i].uni(j,k)){
							b[i]=false;
						}
					}
					if(c>=3)b[i]=false;
				}
			}
		}
		else if(!uf.uni(A,B)){
			phase=1;
			res=-uf.t[uf.par(A)];			
		}
	}
	else if(phase==1){
		if(e[A].size()==3){
			phase=2;
			for(int i=0;i<3;i++){
				p[i]=e[A][i];
			}
			p[3]=A;
			for(int i=0;i<4;i++){
				b[i]=true;
			}
			for(int i=0;i<4;i++){
				for(int j=0;j<1000000;j++){
					if(p[i]==j)continue;
					int c=0;
					for(int k:e[j]){
						if(p[i]==k)continue;
						c++;
						if(j<k)continue;
						if(!up[i].uni(j,k)){
							b[i]=false;
						}
					}
					if(c>=3)b[i]=false;
				}
			}
		}
		else if(e[B].size()==3){
			phase=2;
			for(int i=0;i<3;i++){
				p[i]=e[B][i];
			}
			p[3]=B;
			for(int i=0;i<4;i++){
				b[i]=true;
			}
			for(int i=0;i<4;i++){
				for(int j=0;j<1000000;j++){
					if(p[i]==j)continue;
					int c=0;
					for(int k:e[j]){
						if(p[i]==k)continue;
						c++;
						if(j<k)continue;
						if(!up[i].uni(j,k)){
							b[i]=false;
						}
					}
					if(c>=3)b[i]=false;
				}
			}
		}
		else if(!uf.uni(A,B)){
			phase=3;
		}
	}
	else if(phase==2){
		for(int i=0;i<4;i++){
			if(!b[i])continue;
			if(A!=p[i]&&B!=p[i]){
				if(!up[i].uni(A,B)){
					b[i]=false;
				}
				int c=0;
				for(int j:e[A]){
					if(j!=p[i])c++;
				}
				if(c>=3)b[i]=false;
				c=0;
				for(int j:e[B]){
					if(j!=p[i])c++;
				}
				if(c>=3)b[i]=false;
			}
		}
	}
}

int CountCritical() {
	if(phase==0)return res;
	if(phase==1)return res;
	if(phase==2){
		res=0;
		for(int i=0;i<4;i++){
			res+=b[i];
		}
		return res;
	}
	return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 43384 KB Output is correct
2 Correct 38 ms 43520 KB Output is correct
3 Correct 43 ms 43640 KB Output is correct
4 Correct 27 ms 43392 KB Output is correct
5 Correct 33 ms 43520 KB Output is correct
6 Correct 29 ms 43640 KB Output is correct
7 Correct 35 ms 43384 KB Output is correct
8 Correct 29 ms 43520 KB Output is correct
9 Correct 43 ms 43640 KB Output is correct
10 Correct 38 ms 43640 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 478 ms 66536 KB Output is correct
2 Correct 1102 ms 79208 KB Output is correct
3 Correct 955 ms 83544 KB Output is correct
4 Correct 1176 ms 88184 KB Output is correct
5 Correct 1166 ms 88440 KB Output is correct
6 Correct 1122 ms 86776 KB Output is correct
7 Correct 917 ms 82552 KB Output is correct
8 Correct 1586 ms 85440 KB Output is correct
9 Correct 1633 ms 88104 KB Output is correct
10 Correct 766 ms 85660 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 43384 KB Output is correct
2 Correct 38 ms 43520 KB Output is correct
3 Correct 43 ms 43640 KB Output is correct
4 Correct 27 ms 43392 KB Output is correct
5 Correct 33 ms 43520 KB Output is correct
6 Correct 29 ms 43640 KB Output is correct
7 Correct 35 ms 43384 KB Output is correct
8 Correct 29 ms 43520 KB Output is correct
9 Correct 43 ms 43640 KB Output is correct
10 Correct 38 ms 43640 KB Output is correct
11 Correct 39 ms 43640 KB Output is correct
12 Correct 45 ms 43776 KB Output is correct
13 Correct 46 ms 43776 KB Output is correct
14 Correct 45 ms 43684 KB Output is correct
15 Correct 43 ms 43640 KB Output is correct
16 Correct 37 ms 43776 KB Output is correct
17 Correct 39 ms 43768 KB Output is correct
18 Correct 39 ms 44024 KB Output is correct
19 Correct 31 ms 43840 KB Output is correct
20 Correct 42 ms 43768 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 43384 KB Output is correct
2 Correct 38 ms 43520 KB Output is correct
3 Correct 43 ms 43640 KB Output is correct
4 Correct 27 ms 43392 KB Output is correct
5 Correct 33 ms 43520 KB Output is correct
6 Correct 29 ms 43640 KB Output is correct
7 Correct 35 ms 43384 KB Output is correct
8 Correct 29 ms 43520 KB Output is correct
9 Correct 43 ms 43640 KB Output is correct
10 Correct 38 ms 43640 KB Output is correct
11 Correct 39 ms 43640 KB Output is correct
12 Correct 45 ms 43776 KB Output is correct
13 Correct 46 ms 43776 KB Output is correct
14 Correct 45 ms 43684 KB Output is correct
15 Correct 43 ms 43640 KB Output is correct
16 Correct 37 ms 43776 KB Output is correct
17 Correct 39 ms 43768 KB Output is correct
18 Correct 39 ms 44024 KB Output is correct
19 Correct 31 ms 43840 KB Output is correct
20 Correct 42 ms 43768 KB Output is correct
21 Correct 46 ms 44792 KB Output is correct
22 Correct 65 ms 45688 KB Output is correct
23 Correct 77 ms 46304 KB Output is correct
24 Correct 90 ms 45868 KB Output is correct
25 Correct 52 ms 43896 KB Output is correct
26 Correct 80 ms 46456 KB Output is correct
27 Correct 81 ms 47224 KB Output is correct
28 Correct 87 ms 47224 KB Output is correct
29 Correct 78 ms 45560 KB Output is correct
30 Correct 110 ms 47608 KB Output is correct

Subtask #5
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 43384 KB Output is correct
2 Correct 38 ms 43520 KB Output is correct
3 Correct 43 ms 43640 KB Output is correct
4 Correct 27 ms 43392 KB Output is correct
5 Correct 33 ms 43520 KB Output is correct
6 Correct 29 ms 43640 KB Output is correct
7 Correct 35 ms 43384 KB Output is correct
8 Correct 29 ms 43520 KB Output is correct
9 Correct 43 ms 43640 KB Output is correct
10 Correct 38 ms 43640 KB Output is correct
11 Correct 478 ms 66536 KB Output is correct
12 Correct 1102 ms 79208 KB Output is correct
13 Correct 955 ms 83544 KB Output is correct
14 Correct 1176 ms 88184 KB Output is correct
15 Correct 1166 ms 88440 KB Output is correct
16 Correct 1122 ms 86776 KB Output is correct
17 Correct 917 ms 82552 KB Output is correct
18 Correct 1586 ms 85440 KB Output is correct
19 Correct 1633 ms 88104 KB Output is correct
20 Correct 766 ms 85660 KB Output is correct
21 Correct 39 ms 43640 KB Output is correct
22 Correct 45 ms 43776 KB Output is correct
23 Correct 46 ms 43776 KB Output is correct
24 Correct 45 ms 43684 KB Output is correct
25 Correct 43 ms 43640 KB Output is correct
26 Correct 37 ms 43776 KB Output is correct
27 Correct 39 ms 43768 KB Output is correct
28 Correct 39 ms 44024 KB Output is correct
29 Correct 31 ms 43840 KB Output is correct
30 Correct 42 ms 43768 KB Output is correct
31 Correct 46 ms 44792 KB Output is correct
32 Correct 65 ms 45688 KB Output is correct
33 Correct 77 ms 46304 KB Output is correct
34 Correct 90 ms 45868 KB Output is correct
35 Correct 52 ms 43896 KB Output is correct
36 Correct 80 ms 46456 KB Output is correct
37 Correct 81 ms 47224 KB Output is correct
38 Correct 87 ms 47224 KB Output is correct
39 Correct 78 ms 45560 KB Output is correct
40 Correct 110 ms 47608 KB Output is correct
41 Correct 280 ms 55572 KB Output is correct
42 Correct 739 ms 66424 KB Output is correct
43 Correct 316 ms 50552 KB Output is correct
44 Correct 671 ms 83704 KB Output is correct
45 Correct 747 ms 73688 KB Output is correct
46 Correct 743 ms 81816 KB Output is correct
47 Correct 992 ms 82296 KB Output is correct
48 Correct 542 ms 66424 KB Output is correct
49 Correct 748 ms 79608 KB Output is correct
50 Correct 783 ms 79224 KB Output is correct
51 Correct 383 ms 52500 KB Output is correct
52 Correct 583 ms 76768 KB Output is correct
53 Correct 485 ms 66680 KB Output is correct
54 Correct 1301 ms 80760 KB Output is correct
55 Correct 1051 ms 83752 KB Output is correct