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답안 #367328

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
367328 2021-02-16T21:43:02 Z MilosMilutinovic 슈퍼트리 잇기 (IOI20_supertrees) C++14
40 / 100
 281 ms 30700 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
#define pb push_back
const int N=1050;
vector<int> E[N];
vector<vector<int>> p;
vector<int> par(N);
vector<vector<int>> ans(N,vector<int>(N,0));
void AddEdge(int u,int v){E[u].pb(v);E[v].pb(u);}
vector<int> Euler;
bool was[N];
void DFS1(int u){
	was[u]=true,Euler.pb(u);
	for(int v:E[u])if(!was[v]&&p[u][v]==1)DFS1(v);
}
void DFS2(int u){
	was[u]=true,Euler.pb(u);
	for(int v:E[u])if(!was[v]&&p[u][v]==2)DFS2(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;
	ans.resize(n);
	for(int i=0;i<n;i++)ans[i].resize(n);
	for(int i=0;i<n;i++)for(int j=0;j<n;j++)ans[i][j]=0;
	for(int i=0;i<n;i++)for(int j=i+1;j<n;j++)if(p[i][j]>0)AddEdge(i,j);
	bool one=false,two=false;
	for(int i=0;i<n;i++)for(int j=i+1;j<n;j++)if(p[i][j]==1)one=true;
	for(int i=0;i<n;i++)for(int j=i+1;j<n;j++)if(p[i][j]==2)two=true;
	if(!one&&!two){build(ans);return 1;}
	if(one&&!two){
		for(int i=0;i<n;i++){
			if(!was[i]){
				DFS1(i);
				if((int)Euler.size()==1){Euler.clear();continue;}
				for(int x:Euler)for(int y:Euler)if(x!=y&&p[x][y]==0)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;
				}
				Euler.clear();
			}
		}
		build(ans);
		return 1;
	}
	if(!one&&two){
		for(int i=0;i<n;i++){
			if(!was[i]){
				DFS2(i);
				if((int)Euler.size()==1){Euler.clear();continue;}
				if((int)Euler.size()==2)return 0;
				for(int x:Euler)for(int y:Euler)if(x!=y&&p[x][y]==0)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(Euler.size()>2){
					int x=Euler[0],y=Euler.back();
					ans[x][y]=ans[y][x]=1;
				}
				Euler.clear();
			}
		}
		build(ans);
		return 1;
	}
	if(one&&two){
		vector<int> root;
		for(int i=0;i<n;i++){
			if(!was[i]){
				DFS1(i);
				if((int)Euler.size()==1){par[i]=i;Euler.clear();continue;}
				for(int x:Euler)for(int y:Euler)if(x!=y&&p[x][y]!=1)return 0;
				for(int x:Euler)par[x]=Euler[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;
				}
				Euler.clear();
			}
		}
		for(int i=0;i<n;i++)was[i]=false;
		for(int i=0;i<n;i++){
			if(!was[i]){
				DFS2(i);
				if((int)Euler.size()==1){Euler.clear();continue;}
				if((int)Euler.size()==2)return 0;
				for(int x:Euler)for(int y:Euler)if(x!=y&&p[x][y]==0)return 0;
				for(int i=1;i<(int)Euler.size();i++){
					int x=par[Euler[i]],y=par[Euler[i-1]];
					ans[x][y]=ans[y][x]=1;
				}
				if((int)Euler.size()>2){
					int x=par[Euler[0]],y=par[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:105:1: warning: control reaches end of non-void function [-Wreturn-type]
  105 | }
      | ^

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4716 KB Output is correct
2 Correct 3 ms 4716 KB Output is correct
3 Correct 3 ms 4716 KB Output is correct
4 Correct 3 ms 4716 KB Output is correct
5 Correct 3 ms 4716 KB Output is correct
6 Correct 13 ms 5228 KB Output is correct
7 Correct 281 ms 30700 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4716 KB Output is correct
2 Correct 3 ms 4716 KB Output is correct
3 Correct 3 ms 4716 KB Output is correct
4 Correct 3 ms 4716 KB Output is correct
5 Correct 3 ms 4716 KB Output is correct
6 Correct 13 ms 5228 KB Output is correct
7 Correct 281 ms 30700 KB Output is correct
8 Correct 3 ms 4716 KB Output is correct
9 Correct 3 ms 4716 KB Output is correct
10 Correct 3 ms 4716 KB Output is correct
11 Correct 4 ms 4716 KB Output is correct
12 Correct 15 ms 5228 KB Output is correct
13 Correct 250 ms 26220 KB Output is correct
14 Correct 3 ms 4716 KB Output is correct
15 Correct 3 ms 4716 KB Output is correct
16 Correct 8 ms 5228 KB Output is correct
17 Correct 120 ms 19308 KB Output is correct
18 Correct 3 ms 4716 KB Output is correct
19 Correct 3 ms 4716 KB Output is correct
20 Correct 65 ms 8272 KB Output is correct
21 Correct 254 ms 26988 KB Output is correct
22 Correct 256 ms 26476 KB Output is correct
23 Correct 262 ms 28396 KB Output is correct
24 Correct 249 ms 26348 KB Output is correct
25 Correct 107 ms 16892 KB Output is correct
26 Correct 105 ms 16620 KB Output is correct
27 Correct 266 ms 29548 KB Output is correct
28 Correct 246 ms 26220 KB Output is correct

Subtask #3
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4716 KB Output is correct
2 Correct 3 ms 4716 KB Output is correct
3 Correct 3 ms 4716 KB Output is correct
4 Correct 3 ms 4716 KB Output is correct
5 Correct 3 ms 4716 KB Output is correct
6 Correct 3 ms 4716 KB Output is correct
7 Correct 3 ms 4716 KB Output is correct
8 Correct 13 ms 5228 KB Output is correct
9 Correct 265 ms 26348 KB Output is correct
10 Correct 3 ms 4716 KB Output is correct
11 Correct 3 ms 4716 KB Output is correct
12 Correct 13 ms 5228 KB Output is correct
13 Correct 263 ms 30444 KB Output is correct
14 Correct 4 ms 4716 KB Output is correct
15 Correct 4 ms 4716 KB Output is correct
16 Correct 8 ms 5228 KB Output is correct
17 Correct 119 ms 19180 KB Output is correct
18 Correct 3 ms 4716 KB Output is correct
19 Correct 3 ms 4716 KB Output is correct
20 Correct 3 ms 4716 KB Output is correct
21 Correct 66 ms 8300 KB Output is correct
22 Correct 255 ms 26988 KB Output is correct
23 Correct 256 ms 26348 KB Output is correct
24 Correct 261 ms 29420 KB Output is correct
25 Correct 105 ms 16492 KB Output is correct
26 Correct 111 ms 16876 KB Output is correct
27 Correct 251 ms 26476 KB Output is correct
28 Correct 263 ms 28396 KB Output is correct
29 Correct 108 ms 16492 KB Output is correct

Subtask #4
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4716 KB Output is correct
2 Correct 3 ms 4716 KB Output is correct
3 Correct 3 ms 4716 KB Output is correct
4 Correct 68 ms 8172 KB Output is correct
5 Correct 261 ms 26860 KB Output is correct
6 Correct 258 ms 26364 KB Output is correct
7 Correct 266 ms 28396 KB Output is correct
8 Correct 3 ms 4716 KB Output is correct
9 Correct 64 ms 8172 KB Output is correct
10 Correct 250 ms 26860 KB Output is correct
11 Correct 254 ms 26424 KB Output is correct
12 Correct 267 ms 29420 KB Output is correct
13 Correct 3 ms 4716 KB Output is correct
14 Correct 3 ms 4716 KB Output is correct
15 Incorrect 3 ms 4716 KB Too few ways to get from 0 to 1, should be 2 found 1
16 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4716 KB Output is correct
2 Correct 3 ms 4716 KB Output is correct
3 Correct 3 ms 4716 KB Output is correct
4 Correct 3 ms 4716 KB Output is correct
5 Correct 3 ms 4716 KB Output is correct
6 Correct 13 ms 5228 KB Output is correct
7 Correct 281 ms 30700 KB Output is correct
8 Correct 3 ms 4716 KB Output is correct
9 Correct 3 ms 4716 KB Output is correct
10 Correct 3 ms 4716 KB Output is correct
11 Correct 4 ms 4716 KB Output is correct
12 Correct 15 ms 5228 KB Output is correct
13 Correct 250 ms 26220 KB Output is correct
14 Correct 3 ms 4716 KB Output is correct
15 Correct 3 ms 4716 KB Output is correct
16 Correct 8 ms 5228 KB Output is correct
17 Correct 120 ms 19308 KB Output is correct
18 Correct 3 ms 4716 KB Output is correct
19 Correct 3 ms 4716 KB Output is correct
20 Correct 65 ms 8272 KB Output is correct
21 Correct 254 ms 26988 KB Output is correct
22 Correct 256 ms 26476 KB Output is correct
23 Correct 262 ms 28396 KB Output is correct
24 Correct 249 ms 26348 KB Output is correct
25 Correct 107 ms 16892 KB Output is correct
26 Correct 105 ms 16620 KB Output is correct
27 Correct 266 ms 29548 KB Output is correct
28 Correct 246 ms 26220 KB Output is correct
29 Correct 3 ms 4716 KB Output is correct
30 Correct 3 ms 4716 KB Output is correct
31 Correct 3 ms 4716 KB Output is correct
32 Correct 3 ms 4716 KB Output is correct
33 Correct 3 ms 4716 KB Output is correct
34 Correct 3 ms 4716 KB Output is correct
35 Correct 3 ms 4716 KB Output is correct
36 Correct 13 ms 5228 KB Output is correct
37 Correct 265 ms 26348 KB Output is correct
38 Correct 3 ms 4716 KB Output is correct
39 Correct 3 ms 4716 KB Output is correct
40 Correct 13 ms 5228 KB Output is correct
41 Correct 263 ms 30444 KB Output is correct
42 Correct 4 ms 4716 KB Output is correct
43 Correct 4 ms 4716 KB Output is correct
44 Correct 8 ms 5228 KB Output is correct
45 Correct 119 ms 19180 KB Output is correct
46 Correct 3 ms 4716 KB Output is correct
47 Correct 3 ms 4716 KB Output is correct
48 Correct 3 ms 4716 KB Output is correct
49 Correct 66 ms 8300 KB Output is correct
50 Correct 255 ms 26988 KB Output is correct
51 Correct 256 ms 26348 KB Output is correct
52 Correct 261 ms 29420 KB Output is correct
53 Correct 105 ms 16492 KB Output is correct
54 Correct 111 ms 16876 KB Output is correct
55 Correct 251 ms 26476 KB Output is correct
56 Correct 263 ms 28396 KB Output is correct
57 Correct 108 ms 16492 KB Output is correct
58 Correct 3 ms 4716 KB Output is correct
59 Correct 3 ms 4716 KB Output is correct
60 Correct 8 ms 5228 KB Output is correct
61 Correct 127 ms 20844 KB Output is correct
62 Correct 3 ms 4716 KB Output is correct
63 Correct 3 ms 4716 KB Output is correct
64 Correct 4 ms 4716 KB Output is correct
65 Incorrect 81 ms 8172 KB b[11][11] is not 0
66 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4716 KB Output is correct
2 Correct 3 ms 4716 KB Output is correct
3 Correct 3 ms 4716 KB Output is correct
4 Correct 3 ms 4716 KB Output is correct
5 Correct 3 ms 4716 KB Output is correct
6 Correct 13 ms 5228 KB Output is correct
7 Correct 281 ms 30700 KB Output is correct
8 Correct 3 ms 4716 KB Output is correct
9 Correct 3 ms 4716 KB Output is correct
10 Correct 3 ms 4716 KB Output is correct
11 Correct 4 ms 4716 KB Output is correct
12 Correct 15 ms 5228 KB Output is correct
13 Correct 250 ms 26220 KB Output is correct
14 Correct 3 ms 4716 KB Output is correct
15 Correct 3 ms 4716 KB Output is correct
16 Correct 8 ms 5228 KB Output is correct
17 Correct 120 ms 19308 KB Output is correct
18 Correct 3 ms 4716 KB Output is correct
19 Correct 3 ms 4716 KB Output is correct
20 Correct 65 ms 8272 KB Output is correct
21 Correct 254 ms 26988 KB Output is correct
22 Correct 256 ms 26476 KB Output is correct
23 Correct 262 ms 28396 KB Output is correct
24 Correct 249 ms 26348 KB Output is correct
25 Correct 107 ms 16892 KB Output is correct
26 Correct 105 ms 16620 KB Output is correct
27 Correct 266 ms 29548 KB Output is correct
28 Correct 246 ms 26220 KB Output is correct
29 Correct 3 ms 4716 KB Output is correct
30 Correct 3 ms 4716 KB Output is correct
31 Correct 3 ms 4716 KB Output is correct
32 Correct 3 ms 4716 KB Output is correct
33 Correct 3 ms 4716 KB Output is correct
34 Correct 3 ms 4716 KB Output is correct
35 Correct 3 ms 4716 KB Output is correct
36 Correct 13 ms 5228 KB Output is correct
37 Correct 265 ms 26348 KB Output is correct
38 Correct 3 ms 4716 KB Output is correct
39 Correct 3 ms 4716 KB Output is correct
40 Correct 13 ms 5228 KB Output is correct
41 Correct 263 ms 30444 KB Output is correct
42 Correct 4 ms 4716 KB Output is correct
43 Correct 4 ms 4716 KB Output is correct
44 Correct 8 ms 5228 KB Output is correct
45 Correct 119 ms 19180 KB Output is correct
46 Correct 3 ms 4716 KB Output is correct
47 Correct 3 ms 4716 KB Output is correct
48 Correct 3 ms 4716 KB Output is correct
49 Correct 66 ms 8300 KB Output is correct
50 Correct 255 ms 26988 KB Output is correct
51 Correct 256 ms 26348 KB Output is correct
52 Correct 261 ms 29420 KB Output is correct
53 Correct 105 ms 16492 KB Output is correct
54 Correct 111 ms 16876 KB Output is correct
55 Correct 251 ms 26476 KB Output is correct
56 Correct 263 ms 28396 KB Output is correct
57 Correct 108 ms 16492 KB Output is correct
58 Correct 3 ms 4716 KB Output is correct
59 Correct 3 ms 4716 KB Output is correct
60 Correct 3 ms 4716 KB Output is correct
61 Correct 68 ms 8172 KB Output is correct
62 Correct 261 ms 26860 KB Output is correct
63 Correct 258 ms 26364 KB Output is correct
64 Correct 266 ms 28396 KB Output is correct
65 Correct 3 ms 4716 KB Output is correct
66 Correct 64 ms 8172 KB Output is correct
67 Correct 250 ms 26860 KB Output is correct
68 Correct 254 ms 26424 KB Output is correct
69 Correct 267 ms 29420 KB Output is correct
70 Correct 3 ms 4716 KB Output is correct
71 Correct 3 ms 4716 KB Output is correct
72 Incorrect 3 ms 4716 KB Too few ways to get from 0 to 1, should be 2 found 1
73 Halted 0 ms 0 KB -