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Submission #1083825

# Submission time Handle Problem Language Result Execution time Memory
1083825 2024-09-04T08:34:10 Z rayan_bd Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 132 ms 24144 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){
		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);
				adj[i][j]=adj[j][i]=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 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1368 KB Output is correct
7 Correct 120 ms 23764 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 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1368 KB Output is correct
7 Correct 120 ms 23764 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 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 1396 KB Output is correct
13 Correct 129 ms 23948 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 66 ms 14160 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 29 ms 6424 KB Output is correct
21 Correct 120 ms 24144 KB Output is correct
22 Correct 115 ms 24096 KB Output is correct
23 Correct 130 ms 24080 KB Output is correct
24 Correct 127 ms 24144 KB Output is correct
25 Correct 61 ms 14160 KB Output is correct
26 Correct 57 ms 14168 KB Output is correct
27 Correct 130 ms 24144 KB Output is correct
28 Correct 132 ms 23952 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 Incorrect 0 ms 344 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 32 ms 6288 KB Output is correct
5 Correct 130 ms 24004 KB Output is correct
6 Correct 118 ms 23892 KB Output is correct
7 Correct 129 ms 23888 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 30 ms 6416 KB Output is correct
10 Correct 122 ms 23836 KB Output is correct
11 Correct 123 ms 23368 KB Output is correct
12 Correct 123 ms 23452 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Incorrect 0 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 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1368 KB Output is correct
7 Correct 120 ms 23764 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 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 1396 KB Output is correct
13 Correct 129 ms 23948 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 66 ms 14160 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 29 ms 6424 KB Output is correct
21 Correct 120 ms 24144 KB Output is correct
22 Correct 115 ms 24096 KB Output is correct
23 Correct 130 ms 24080 KB Output is correct
24 Correct 127 ms 24144 KB Output is correct
25 Correct 61 ms 14160 KB Output is correct
26 Correct 57 ms 14168 KB Output is correct
27 Correct 130 ms 24144 KB Output is correct
28 Correct 132 ms 23952 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Incorrect 0 ms 344 KB Answer gives possible 1 while actual possible 0
33 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 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1368 KB Output is correct
7 Correct 120 ms 23764 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 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 1396 KB Output is correct
13 Correct 129 ms 23948 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 66 ms 14160 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 29 ms 6424 KB Output is correct
21 Correct 120 ms 24144 KB Output is correct
22 Correct 115 ms 24096 KB Output is correct
23 Correct 130 ms 24080 KB Output is correct
24 Correct 127 ms 24144 KB Output is correct
25 Correct 61 ms 14160 KB Output is correct
26 Correct 57 ms 14168 KB Output is correct
27 Correct 130 ms 24144 KB Output is correct
28 Correct 132 ms 23952 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Incorrect 0 ms 344 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -