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답안 #313726

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
313726 2020-10-16T20:12:19 Z keta_tsimakuridze 슈퍼트리 잇기 (IOI20_supertrees) C++14
100 / 100
 283 ms 34172 KB 
#include "supertrees.h"
#include<bits/stdc++.h>
using namespace std;
const int N=1e3+5;
int par[N],sz[N],a[N][N],ans[N][N],type[N],k,i,n,u,v,x,y,fix[N],cycle[N];
vector<int> comp[N],V[N],E;
vector<vector<int> > answer;
int find_parent(int u){
	if(par[u]==u) return u;
	return par[u]=find_parent(par[u]);
}
void merge(int u,int v){
	u=find_parent(u);
	v=find_parent(v);
	if(u==v) return;
	if(sz[u]<sz[v]) swap(u,v);
	par[v]=u;
	sz[u]+=sz[v];
}
void Go(int u){
	for(k=0;k<comp[u].size();k++){
		for(i=k+1;i<comp[u].size();i++){
			int x=comp[u][k];
			int y=comp[u][i];
			if(a[x][y]==1){
			 V[x].push_back(y);
			 V[y].push_back(x); }
		}
	}
	E.clear();
	for(k=0;k<comp[u].size();k++){
		x=comp[u][k]; 
		if(fix[x]) continue;
		E.push_back(x);
		type[x]=1;
		if(!fix[x]){
			for(i=0;i<V[x].size();i++){
				fix[V[x][i]]=x;
				ans[x][V[x][i]]=ans[V[x][i]][x]=1;
			}
		}
	}
	if(E.size()>1){
		for(k=0;k<E.size();k++){
			ans[E[k]][E[(k+1)%E.size()]]=ans[E[(k+1)%E.size()]][E[k]]=1;
		}
	}
}
bool check(){
	for(k=1;k<=n;k++){
		std::vector<int> row;
		for(i=1;i<=n;i++){

			if(i==k) ans[k][i]=0;
			else {
				int x=find_parent(k);
				int y=find_parent(i);
				if(a[k][i]==0 && x==y)return 0;
				if(!type[k] && !type[i] && a[k][i]==2 && fix[k]==fix[i]) return 0;
			}
			row.push_back(ans[k][i]); 
		}answer.push_back(row);
	}
	return 1;
}
int construct(std::vector<std::vector<int> > v){
	//[[1, 1, 2, 2], [1, 1, 2, 2], [2, 2, 1, 2], [2, 2, 2, 1]]
	n=v.size(); 
	for(k=1;k<=n;k++)
	par[k]=k,sz[k]=1;
	for(k=1;k<=n;k++){
		for(i=1;i<=n;i++){
			a[k][i]=v[k-1][i-1];
		//	cout<<a[k][i]<<" ";
			if(a[k][i]==3) {
			return 0;	
			}
			if(a[k][i]!=0) merge(k,i);
		}
	//	cout<<endl;
	}
	for(k=1;k<=n;k++){
		comp[find_parent(k)].push_back(k);
	} 
	for(int k=1;k<=n;k++){
		Go(k);
		if(E.size()==2 && a[E[0]][E[1]]==2) return 0;
	}
	if(!check()) return 0;
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'void Go(int)':
supertrees.cpp:21:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |  for(k=0;k<comp[u].size();k++){
      |          ~^~~~~~~~~~~~~~~
supertrees.cpp:22:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |   for(i=k+1;i<comp[u].size();i++){
      |             ~^~~~~~~~~~~~~~~
supertrees.cpp:31:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |  for(k=0;k<comp[u].size();k++){
      |          ~^~~~~~~~~~~~~~~
supertrees.cpp:37:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |    for(i=0;i<V[x].size();i++){
      |            ~^~~~~~~~~~~~
supertrees.cpp:44:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |   for(k=0;k<E.size();k++){
      |           ~^~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 13 ms 3072 KB Output is correct
7 Correct 279 ms 34172 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 13 ms 3072 KB Output is correct
7 Correct 279 ms 34172 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 12 ms 2816 KB Output is correct
13 Correct 248 ms 30072 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 512 KB Output is correct
16 Correct 7 ms 2432 KB Output is correct
17 Correct 132 ms 18984 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 65 ms 9848 KB Output is correct
21 Correct 259 ms 30584 KB Output is correct
22 Correct 253 ms 30072 KB Output is correct
23 Correct 280 ms 32120 KB Output is correct
24 Correct 249 ms 30072 KB Output is correct
25 Correct 111 ms 16760 KB Output is correct
26 Correct 108 ms 15884 KB Output is correct
27 Correct 281 ms 33144 KB Output is correct
28 Correct 251 ms 30200 KB Output is correct

Subtask #3
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 11 ms 2816 KB Output is correct
9 Correct 254 ms 30072 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 12 ms 2816 KB Output is correct
13 Correct 265 ms 30072 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 6 ms 2304 KB Output is correct
17 Correct 122 ms 16124 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 0 ms 384 KB Output is correct
21 Correct 67 ms 9848 KB Output is correct
22 Correct 274 ms 30088 KB Output is correct
23 Correct 261 ms 30200 KB Output is correct
24 Correct 275 ms 30072 KB Output is correct
25 Correct 103 ms 12408 KB Output is correct
26 Correct 110 ms 16248 KB Output is correct
27 Correct 252 ms 30044 KB Output is correct
28 Correct 277 ms 30200 KB Output is correct
29 Correct 106 ms 12536 KB Output is correct

Subtask #4
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 66 ms 9848 KB Output is correct
5 Correct 256 ms 30584 KB Output is correct
6 Correct 254 ms 30200 KB Output is correct
7 Correct 283 ms 32248 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 65 ms 9848 KB Output is correct
10 Correct 265 ms 30072 KB Output is correct
11 Correct 253 ms 30072 KB Output is correct
12 Correct 276 ms 30072 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 0 ms 512 KB Output is correct
15 Correct 0 ms 512 KB Output is correct
16 Correct 68 ms 9848 KB Output is correct
17 Correct 258 ms 30072 KB Output is correct
18 Correct 260 ms 30200 KB Output is correct
19 Correct 257 ms 30200 KB Output is correct
20 Correct 249 ms 30072 KB Output is correct

Subtask #5
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 13 ms 3072 KB Output is correct
7 Correct 279 ms 34172 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 12 ms 2816 KB Output is correct
13 Correct 248 ms 30072 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 512 KB Output is correct
16 Correct 7 ms 2432 KB Output is correct
17 Correct 132 ms 18984 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 65 ms 9848 KB Output is correct
21 Correct 259 ms 30584 KB Output is correct
22 Correct 253 ms 30072 KB Output is correct
23 Correct 280 ms 32120 KB Output is correct
24 Correct 249 ms 30072 KB Output is correct
25 Correct 111 ms 16760 KB Output is correct
26 Correct 108 ms 15884 KB Output is correct
27 Correct 281 ms 33144 KB Output is correct
28 Correct 251 ms 30200 KB Output is correct
29 Correct 0 ms 384 KB Output is correct
30 Correct 0 ms 384 KB Output is correct
31 Correct 0 ms 384 KB Output is correct
32 Correct 0 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 0 ms 384 KB Output is correct
35 Correct 1 ms 512 KB Output is correct
36 Correct 11 ms 2816 KB Output is correct
37 Correct 254 ms 30072 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 512 KB Output is correct
40 Correct 12 ms 2816 KB Output is correct
41 Correct 265 ms 30072 KB Output is correct
42 Correct 1 ms 384 KB Output is correct
43 Correct 1 ms 512 KB Output is correct
44 Correct 6 ms 2304 KB Output is correct
45 Correct 122 ms 16124 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 0 ms 384 KB Output is correct
49 Correct 67 ms 9848 KB Output is correct
50 Correct 274 ms 30088 KB Output is correct
51 Correct 261 ms 30200 KB Output is correct
52 Correct 275 ms 30072 KB Output is correct
53 Correct 103 ms 12408 KB Output is correct
54 Correct 110 ms 16248 KB Output is correct
55 Correct 252 ms 30044 KB Output is correct
56 Correct 277 ms 30200 KB Output is correct
57 Correct 106 ms 12536 KB Output is correct
58 Correct 0 ms 384 KB Output is correct
59 Correct 1 ms 512 KB Output is correct
60 Correct 6 ms 2432 KB Output is correct
61 Correct 129 ms 18424 KB Output is correct
62 Correct 1 ms 384 KB Output is correct
63 Correct 0 ms 512 KB Output is correct
64 Correct 1 ms 512 KB Output is correct
65 Correct 67 ms 9848 KB Output is correct
66 Correct 111 ms 16120 KB Output is correct
67 Correct 109 ms 15864 KB Output is correct
68 Correct 108 ms 15864 KB Output is correct
69 Correct 110 ms 12280 KB Output is correct

Subtask #6
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 13 ms 3072 KB Output is correct
7 Correct 279 ms 34172 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 12 ms 2816 KB Output is correct
13 Correct 248 ms 30072 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 512 KB Output is correct
16 Correct 7 ms 2432 KB Output is correct
17 Correct 132 ms 18984 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 65 ms 9848 KB Output is correct
21 Correct 259 ms 30584 KB Output is correct
22 Correct 253 ms 30072 KB Output is correct
23 Correct 280 ms 32120 KB Output is correct
24 Correct 249 ms 30072 KB Output is correct
25 Correct 111 ms 16760 KB Output is correct
26 Correct 108 ms 15884 KB Output is correct
27 Correct 281 ms 33144 KB Output is correct
28 Correct 251 ms 30200 KB Output is correct
29 Correct 0 ms 384 KB Output is correct
30 Correct 0 ms 384 KB Output is correct
31 Correct 0 ms 384 KB Output is correct
32 Correct 0 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 0 ms 384 KB Output is correct
35 Correct 1 ms 512 KB Output is correct
36 Correct 11 ms 2816 KB Output is correct
37 Correct 254 ms 30072 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 512 KB Output is correct
40 Correct 12 ms 2816 KB Output is correct
41 Correct 265 ms 30072 KB Output is correct
42 Correct 1 ms 384 KB Output is correct
43 Correct 1 ms 512 KB Output is correct
44 Correct 6 ms 2304 KB Output is correct
45 Correct 122 ms 16124 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 0 ms 384 KB Output is correct
49 Correct 67 ms 9848 KB Output is correct
50 Correct 274 ms 30088 KB Output is correct
51 Correct 261 ms 30200 KB Output is correct
52 Correct 275 ms 30072 KB Output is correct
53 Correct 103 ms 12408 KB Output is correct
54 Correct 110 ms 16248 KB Output is correct
55 Correct 252 ms 30044 KB Output is correct
56 Correct 277 ms 30200 KB Output is correct
57 Correct 106 ms 12536 KB Output is correct
58 Correct 1 ms 384 KB Output is correct
59 Correct 1 ms 512 KB Output is correct
60 Correct 1 ms 384 KB Output is correct
61 Correct 66 ms 9848 KB Output is correct
62 Correct 256 ms 30584 KB Output is correct
63 Correct 254 ms 30200 KB Output is correct
64 Correct 283 ms 32248 KB Output is correct
65 Correct 0 ms 384 KB Output is correct
66 Correct 65 ms 9848 KB Output is correct
67 Correct 265 ms 30072 KB Output is correct
68 Correct 253 ms 30072 KB Output is correct
69 Correct 276 ms 30072 KB Output is correct
70 Correct 1 ms 384 KB Output is correct
71 Correct 0 ms 512 KB Output is correct
72 Correct 0 ms 512 KB Output is correct
73 Correct 68 ms 9848 KB Output is correct
74 Correct 258 ms 30072 KB Output is correct
75 Correct 260 ms 30200 KB Output is correct
76 Correct 257 ms 30200 KB Output is correct
77 Correct 249 ms 30072 KB Output is correct
78 Correct 0 ms 384 KB Output is correct
79 Correct 1 ms 512 KB Output is correct
80 Correct 6 ms 2432 KB Output is correct
81 Correct 129 ms 18424 KB Output is correct
82 Correct 1 ms 384 KB Output is correct
83 Correct 0 ms 512 KB Output is correct
84 Correct 1 ms 512 KB Output is correct
85 Correct 67 ms 9848 KB Output is correct
86 Correct 111 ms 16120 KB Output is correct
87 Correct 109 ms 15864 KB Output is correct
88 Correct 108 ms 15864 KB Output is correct
89 Correct 110 ms 12280 KB Output is correct
90 Correct 0 ms 384 KB Output is correct
91 Correct 0 ms 384 KB Output is correct
92 Correct 5 ms 640 KB Output is correct
93 Correct 107 ms 8440 KB Output is correct
94 Correct 0 ms 384 KB Output is correct
95 Correct 0 ms 384 KB Output is correct
96 Correct 0 ms 384 KB Output is correct
97 Correct 26 ms 2552 KB Output is correct
98 Correct 100 ms 8460 KB Output is correct
99 Correct 101 ms 8952 KB Output is correct
100 Correct 98 ms 8568 KB Output is correct
101 Correct 100 ms 9612 KB Output is correct
102 Correct 105 ms 8312 KB Output is correct
103 Correct 105 ms 8312 KB Output is correct
104 Correct 105 ms 8336 KB Output is correct
105 Correct 107 ms 8440 KB Output is correct