oj.uz

Submission #366963

# Submission time Handle Problem Language Result Execution time Memory
366963 2021-02-15T20:57:08 Z MilosMilutinovic Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 286 ms 30316 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
#define pb push_back
const int N=1050;
vector<int> E[N];
void AddEdge(int u,int v){E[u].pb(v),E[v].pb(u);}
bool was[N];
vector<int> Euler;
vector<vector<int>> p;
void DFS(int u){
	was[u]=true,Euler.pb(u);
	for(int v:E[u])if(!was[v]&&p[u][v]==1)DFS(v);
}
void DFS1(int u){
	was[u]=true,Euler.pb(u);
	for(int v:E[u])if(!was[v]&&p[u][v]==2)DFS1(v);
}
int construct(vector<vector<int>> P){
	p=P;int n=(int)p.size();
	for(int i=0;i<n;i++)for(int j=0;j<n;j++)if(p[i][j]==3)return 0;
	for(int i=0;i<n;i++)for(int j=i;j<n;j++)if(p[i][j]>0)AddEdge(i,j);
	bool one=true,two=true;
	for(int i=0;i<n;i++)for(int j=0;j<n;j++)if(p[i][j]==1)two=false;
	for(int i=0;i<n;i++)for(int j=0;j<n;j++)if(p[i][j]==2)one=false;
	vector<vector<int>> ans(n,vector<int>(n,0));
	vector<int> root;
	for(int i=0;i<n;i++){
		if(!was[i]){
			DFS(i);
			if(one){
				for(int x:Euler)for(int y:Euler)if(x!=y&&p[x][y]==0)return 0;
			}
			root.pb(i);
			for(int j=1;j<(int)Euler.size();j++){
				int x=Euler[j],y=Euler[j-1];
				ans[x][y]=ans[y][x]=1;
			}
			Euler.clear();
		}
	}
	for(int i=0;i<n;i++)was[i]=false;
	for(int i=0;i<n;i++)for(int j=0;j<n;j++){
		if(!was[i]){
			DFS1(i);
			if((int)Euler.size()==2)return 0;
			for(int i=1;i<(int)Euler.size();i++){
				int x=Euler[i],y=Euler[i-1];
				ans[x][y]=ans[y][x]=1;
			}
			if((int)Euler.size()>2){
				int x=Euler[0],y=Euler.back();
				ans[x][y]=ans[y][x]=1;
			}
			Euler.clear();
		}
	}
	build(ans);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:23:16: warning: variable 'two' set but not used [-Wunused-but-set-variable]
   23 |  bool one=true,two=true;
      |                ^~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1644 KB Output is correct
7 Correct 253 ms 30316 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1644 KB Output is correct
7 Correct 253 ms 30316 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 10 ms 1388 KB Output is correct
13 Correct 239 ms 26220 KB Output is correct
14 Correct 0 ms 236 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 6 ms 1152 KB Output is correct
17 Correct 122 ms 19180 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 63 ms 6892 KB Output is correct
21 Correct 243 ms 26604 KB Output is correct
22 Correct 243 ms 26092 KB Output is correct
23 Correct 275 ms 28140 KB Output is correct
24 Correct 251 ms 26220 KB Output is correct
25 Correct 107 ms 16748 KB Output is correct
26 Correct 104 ms 16236 KB Output is correct
27 Correct 286 ms 29164 KB Output is correct
28 Correct 243 ms 26220 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 10 ms 1388 KB Output is correct
9 Correct 239 ms 26220 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 11 ms 1644 KB Output is correct
13 Correct 248 ms 30316 KB Output is correct
14 Incorrect 1 ms 364 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 77 ms 6892 KB Output is correct
5 Correct 246 ms 26764 KB Output is correct
6 Correct 264 ms 26092 KB Output is correct
7 Correct 256 ms 28140 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 80 ms 6892 KB Output is correct
10 Correct 245 ms 26732 KB Output is correct
11 Correct 271 ms 26220 KB Output is correct
12 Correct 253 ms 29292 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Incorrect 1 ms 364 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 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1644 KB Output is correct
7 Correct 253 ms 30316 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 10 ms 1388 KB Output is correct
13 Correct 239 ms 26220 KB Output is correct
14 Correct 0 ms 236 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 6 ms 1152 KB Output is correct
17 Correct 122 ms 19180 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 63 ms 6892 KB Output is correct
21 Correct 243 ms 26604 KB Output is correct
22 Correct 243 ms 26092 KB Output is correct
23 Correct 275 ms 28140 KB Output is correct
24 Correct 251 ms 26220 KB Output is correct
25 Correct 107 ms 16748 KB Output is correct
26 Correct 104 ms 16236 KB Output is correct
27 Correct 286 ms 29164 KB Output is correct
28 Correct 243 ms 26220 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 10 ms 1388 KB Output is correct
37 Correct 239 ms 26220 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 11 ms 1644 KB Output is correct
41 Correct 248 ms 30316 KB Output is correct
42 Incorrect 1 ms 364 KB Answer gives possible 1 while actual possible 0
43 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1644 KB Output is correct
7 Correct 253 ms 30316 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 10 ms 1388 KB Output is correct
13 Correct 239 ms 26220 KB Output is correct
14 Correct 0 ms 236 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 6 ms 1152 KB Output is correct
17 Correct 122 ms 19180 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 63 ms 6892 KB Output is correct
21 Correct 243 ms 26604 KB Output is correct
22 Correct 243 ms 26092 KB Output is correct
23 Correct 275 ms 28140 KB Output is correct
24 Correct 251 ms 26220 KB Output is correct
25 Correct 107 ms 16748 KB Output is correct
26 Correct 104 ms 16236 KB Output is correct
27 Correct 286 ms 29164 KB Output is correct
28 Correct 243 ms 26220 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 10 ms 1388 KB Output is correct
37 Correct 239 ms 26220 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 11 ms 1644 KB Output is correct
41 Correct 248 ms 30316 KB Output is correct
42 Incorrect 1 ms 364 KB Answer gives possible 1 while actual possible 0
43 Halted 0 ms 0 KB -