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Submission #1083841

# Submission time Handle Problem Language Result Execution time Memory
1083841 2024-09-04T09:05:20 Z rayan_bd Connecting Supertrees (IOI20_supertrees) C++17
40 / 100
 144 ms 24160 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;

vector<int> par1(1001),sz1(1001,1),par2(1001),sz2(1001,1),par3(1001),sz3(1003,1);

int findPar1(int u){
	if(par1[u]==u) return u;
	return par1[u]=findPar1(par1[u]);
}

int findPar2(int u){
	if(par2[u]==u) return u;
	return par2[u]=findPar2(par2[u]);
}

int findPar3(int u){
	if(par3[u]==u) return u;
	return par3[u]=findPar3(par3[u]);
}

void unite1(int u,int v){
	int ulp=findPar1(u);
	int vlp=findPar1(v);
	if(ulp==vlp) return;
	if(sz1[ulp]>sz1[vlp]){
		par1[vlp]=ulp;
		sz1[ulp]+=sz1[vlp];
	}else{
		par1[ulp]=vlp;
		sz1[vlp]+=sz1[ulp];
	}
}

void unite2(int u,int v){
	int ulp=findPar2(u);
	int vlp=findPar2(v);
	if(ulp==vlp) return;
	if(sz2[ulp]>sz2[vlp]){
		par2[vlp]=ulp;
		sz2[ulp]+=sz2[vlp];
	}else{
		par2[ulp]=vlp;
		sz2[vlp]+=sz2[ulp];
	}
}

void unite3(int u,int v){
	int ulp=findPar3(u);
	int vlp=findPar3(v);
	if(ulp==vlp) return;
	if(sz3[ulp]>sz3[vlp]){
		par3[vlp]=ulp;
		sz3[ulp]+=sz3[vlp];
	}else{
		par3[ulp]=vlp;
		sz3[vlp]+=sz3[ulp];
	}
}

bool is_samee1(int u,int v){
	return findPar1(u)==findPar1(v);
}

bool is_samee2(int u,int v){
	return findPar2(u)==findPar2(v);
}


bool is_samee3(int u,int v){
	return findPar3(u)==findPar3(v);
}



int construct(vector<vector<int>> p) {
	int n = p.size();
	vector<vector<int>> adj(n,vector<int>(n,0));

	// subtask 4

	for(int i=0;i<n;++i) par1[i]=par2[i]=par3[i]=i;

	for(int i=0;i<n;++i){
		for(int j=i+1;j<n;++j){
			if(p[i][j]==2){
				unite2(i,j);
				unite3(i,j);
			}
		}
	}

	for(int i=0;i<n;++i){
		for(int j=i+1;j<n;++j){
			if(p[i][j]==1&&sz2[i]==1&&sz2[j]==1){
				unite1(i,j);
				unite3(i,j);
			}
		}
	}

	for(int i=0;i<n;++i){
		if(sz2[findPar2(i)]==2) return 0;
		for(int j=i+1;j<n;++j){
			if(p[i][j]==0&&is_samee3(i,j)) return 0;
		}
	}

	vector<int> last_2(n+1,-1),first(n+1,-1),last_1(n+1,-1);


	for(int i=0;i<n;++i){
		// connecting the 2 ways road
		int ulp1=findPar2(i);
		if(last_2[ulp1]!=-1&&sz2[ulp1]>2){
			adj[i][last_2[ulp1]]=1;
			adj[last_2[ulp1]][i]=1;
		}
		if(first[ulp1]==-1) first[ulp1]=i;
		last_2[ulp1]=i;

		ulp1=findPar1(i);
		if(last_1[ulp1]!=-1&&sz1[ulp1]>1){
			adj[i][last_1[ulp1]]=1;
			adj[last_1[ulp1]][i]=1;
		}
		last_1[ulp1]=i;
	}

	for(int i=0;i<n;++i){
		int ulp=findPar2(i);
		if(sz2[ulp]>1) adj[last_2[ulp]][first[ulp]]=adj[first[ulp]][last_2[ulp]]=1;
	}

	for(int i=0;i<n;++i){
		for(int j=i+1;j<n;++j){
			if(p[i][j]==1&&!is_samee3(i,j)){
				unite3(i,j);
				int u=findPar3(i),v=findPar3(j);
				adj[u][v]=adj[v][u]=1;

			}
		}
	}
/*
	for(int i=0;i<n;++i){
		for(int j=i+1;j<n;++j){
			if(adj[i][j]>0){
				cout<<i<<" - "<<j<<'\n';
			}
		}
	}*/

	build(adj);
	
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 132 ms 23956 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 132 ms 23956 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1208 KB Output is correct
13 Correct 121 ms 24148 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 73 ms 14020 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 43 ms 6432 KB Output is correct
21 Correct 123 ms 24148 KB Output is correct
22 Correct 118 ms 24144 KB Output is correct
23 Correct 144 ms 24148 KB Output is correct
24 Correct 120 ms 24148 KB Output is correct
25 Correct 52 ms 14112 KB Output is correct
26 Correct 63 ms 14164 KB Output is correct
27 Correct 132 ms 24148 KB Output is correct
28 Correct 119 ms 24152 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 6 ms 1372 KB Output is correct
9 Correct 119 ms 24052 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1372 KB Output is correct
13 Correct 121 ms 24080 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 928 KB Output is correct
17 Correct 62 ms 14164 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 33 ms 6292 KB Output is correct
22 Correct 121 ms 24148 KB Output is correct
23 Correct 119 ms 24144 KB Output is correct
24 Correct 125 ms 24096 KB Output is correct
25 Correct 51 ms 14164 KB Output is correct
26 Correct 59 ms 14160 KB Output is correct
27 Correct 121 ms 24160 KB Output is correct
28 Correct 128 ms 24144 KB Output is correct
29 Correct 53 ms 14160 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 43 ms 6224 KB Output is correct
5 Correct 125 ms 24144 KB Output is correct
6 Correct 114 ms 24148 KB Output is correct
7 Correct 126 ms 24148 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 30 ms 6372 KB Output is correct
10 Correct 116 ms 24144 KB Output is correct
11 Correct 142 ms 24144 KB Output is correct
12 Correct 131 ms 24144 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Incorrect 1 ms 348 KB Too many ways to get from 0 to 4, should be 1 found no less than 2
16 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 132 ms 23956 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1208 KB Output is correct
13 Correct 121 ms 24148 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 73 ms 14020 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 43 ms 6432 KB Output is correct
21 Correct 123 ms 24148 KB Output is correct
22 Correct 118 ms 24144 KB Output is correct
23 Correct 144 ms 24148 KB Output is correct
24 Correct 120 ms 24148 KB Output is correct
25 Correct 52 ms 14112 KB Output is correct
26 Correct 63 ms 14164 KB Output is correct
27 Correct 132 ms 24148 KB Output is correct
28 Correct 119 ms 24152 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 6 ms 1372 KB Output is correct
37 Correct 119 ms 24052 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 6 ms 1372 KB Output is correct
41 Correct 121 ms 24080 KB Output is correct
42 Correct 1 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 928 KB Output is correct
45 Correct 62 ms 14164 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 33 ms 6292 KB Output is correct
50 Correct 121 ms 24148 KB Output is correct
51 Correct 119 ms 24144 KB Output is correct
52 Correct 125 ms 24096 KB Output is correct
53 Correct 51 ms 14164 KB Output is correct
54 Correct 59 ms 14160 KB Output is correct
55 Correct 121 ms 24160 KB Output is correct
56 Correct 128 ms 24144 KB Output is correct
57 Correct 53 ms 14160 KB Output is correct
58 Correct 0 ms 464 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 4 ms 860 KB Output is correct
61 Correct 63 ms 14220 KB Output is correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Incorrect 30 ms 6240 KB Too many ways to get from 1 to 269, should be 1 found no less than 2
66 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 132 ms 23956 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1208 KB Output is correct
13 Correct 121 ms 24148 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 73 ms 14020 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 43 ms 6432 KB Output is correct
21 Correct 123 ms 24148 KB Output is correct
22 Correct 118 ms 24144 KB Output is correct
23 Correct 144 ms 24148 KB Output is correct
24 Correct 120 ms 24148 KB Output is correct
25 Correct 52 ms 14112 KB Output is correct
26 Correct 63 ms 14164 KB Output is correct
27 Correct 132 ms 24148 KB Output is correct
28 Correct 119 ms 24152 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 6 ms 1372 KB Output is correct
37 Correct 119 ms 24052 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 6 ms 1372 KB Output is correct
41 Correct 121 ms 24080 KB Output is correct
42 Correct 1 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 928 KB Output is correct
45 Correct 62 ms 14164 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 33 ms 6292 KB Output is correct
50 Correct 121 ms 24148 KB Output is correct
51 Correct 119 ms 24144 KB Output is correct
52 Correct 125 ms 24096 KB Output is correct
53 Correct 51 ms 14164 KB Output is correct
54 Correct 59 ms 14160 KB Output is correct
55 Correct 121 ms 24160 KB Output is correct
56 Correct 128 ms 24144 KB Output is correct
57 Correct 53 ms 14160 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 43 ms 6224 KB Output is correct
62 Correct 125 ms 24144 KB Output is correct
63 Correct 114 ms 24148 KB Output is correct
64 Correct 126 ms 24148 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 30 ms 6372 KB Output is correct
67 Correct 116 ms 24144 KB Output is correct
68 Correct 142 ms 24144 KB Output is correct
69 Correct 131 ms 24144 KB Output is correct
70 Correct 1 ms 348 KB Output is correct
71 Correct 1 ms 384 KB Output is correct
72 Incorrect 1 ms 348 KB Too many ways to get from 0 to 4, should be 1 found no less than 2
73 Halted 0 ms 0 KB -