oj.uz

Submission #983076

# Submission time Handle Problem Language Result Execution time Memory
983076 2024-05-15T07:47:29 Z tamir1 Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 184 ms 32664 KB 
#include "supertrees.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;
int sz[1001],par[1001],vis[1001];
int find(int a){
	if(a==par[a]) return a;
	int x=find(par[a]);
	par[a]=x;
	return x;
}
void join(int x,int y){
	x=find(x);
	y=find(y);
	if(x==y) return;
	if(sz[x]<sz[y]) swap(x,y);
	else if(sz[x]==sz[y] && x>y) swap(x,y);
	sz[x]+=sz[y];
	par[y]=x;
}
vector<pair<int,int>> node[4];
vector<int> v[1001],x,y;
int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	for(int i=0;i<n;i++){
		sz[i]=1;
		par[i]=i;
		for(int j=0;j<n;j++){
			node[p[i][j]].push_back({i,j});
		}
	}
	std::vector<std::vector<int>> answer(n,vector<int> (n,0));
	for(auto [x,y]:node[1]) join(x,y);
	for(int i=0;i<n;i++){
		v[find(i)].push_back(i);
	}
	for(int i=0;i<n;i++){
		if(v[i].size()==0) continue;
		for(int j=1;j<v[i].size();j++){
			vis[v[i][j]]=1;
			answer[v[i][0]][v[i][j]]=answer[v[i][j]][v[i][0]]=1;
		}
		v[i].clear();
	}
	for(auto [x,y]:node[2]) join(x,y);
	for(int i=0;i<n;i++){
		if(!vis[i]) v[find(i)].push_back(i);
	}
	for(int i=0;i<n;i++){
		if(v[i].size()<2) continue;
		if(v[i].size()==2) return 0;
		answer[v[i][0]][v[i].back()]=answer[v[i].back()][v[i][0]]=1;
		for(int j=1;j<v[i].size();j++){
			answer[v[i][j-1]][v[i][j]]=answer[v[i][j]][v[i][j-1]]=1;
		}
	}
	if(node[3].size()!=0) return 0;
	for(auto [x,y]:node[0]){
		if(find(x)==find(y)) return 0;
	}
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:39:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |   for(int j=1;j<v[i].size();j++){
      |               ~^~~~~~~~~~~~
supertrees.cpp:53:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |   for(int j=1;j<v[i].size();j++){
      |               ~^~~~~~~~~~~~

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 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 9 ms 1748 KB Output is correct
7 Correct 178 ms 31988 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 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 9 ms 1748 KB Output is correct
7 Correct 178 ms 31988 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1744 KB Output is correct
13 Correct 168 ms 32004 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 5 ms 1240 KB Output is correct
17 Correct 84 ms 21992 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 600 KB Output is correct
20 Correct 42 ms 8332 KB Output is correct
21 Correct 176 ms 31912 KB Output is correct
22 Correct 167 ms 31988 KB Output is correct
23 Correct 175 ms 31980 KB Output is correct
24 Correct 163 ms 32008 KB Output is correct
25 Correct 77 ms 21984 KB Output is correct
26 Correct 78 ms 22064 KB Output is correct
27 Correct 183 ms 31844 KB Output is correct
28 Correct 172 ms 32020 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 348 KB Output is correct
5 Correct 0 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 9 ms 1748 KB Output is correct
9 Correct 184 ms 32320 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1780 KB Output is correct
13 Correct 167 ms 32116 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 4 ms 1368 KB Output is correct
17 Correct 89 ms 21980 KB Output is correct
18 Correct 0 ms 468 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 41 ms 8336 KB Output is correct
22 Correct 166 ms 32664 KB Output is correct
23 Correct 167 ms 31860 KB Output is correct
24 Correct 178 ms 32016 KB Output is correct
25 Correct 73 ms 21952 KB Output is correct
26 Correct 74 ms 21936 KB Output is correct
27 Correct 167 ms 32112 KB Output is correct
28 Correct 165 ms 31904 KB Output is correct
29 Correct 73 ms 22012 KB Output is correct

Subtask #4
35.0 / 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 600 KB Output is correct
4 Correct 41 ms 8360 KB Output is correct
5 Correct 161 ms 31956 KB Output is correct
6 Correct 175 ms 32180 KB Output is correct
7 Correct 164 ms 31876 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 43 ms 8372 KB Output is correct
10 Correct 164 ms 32252 KB Output is correct
11 Correct 178 ms 31928 KB Output is correct
12 Correct 173 ms 31984 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 464 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 41 ms 8284 KB Output is correct
17 Correct 170 ms 32204 KB Output is correct
18 Correct 162 ms 32464 KB Output is correct
19 Correct 159 ms 31996 KB Output is correct
20 Correct 158 ms 32180 KB Output is correct

Subtask #5
21.0 / 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 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 9 ms 1748 KB Output is correct
7 Correct 178 ms 31988 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1744 KB Output is correct
13 Correct 168 ms 32004 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 5 ms 1240 KB Output is correct
17 Correct 84 ms 21992 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 600 KB Output is correct
20 Correct 42 ms 8332 KB Output is correct
21 Correct 176 ms 31912 KB Output is correct
22 Correct 167 ms 31988 KB Output is correct
23 Correct 175 ms 31980 KB Output is correct
24 Correct 163 ms 32008 KB Output is correct
25 Correct 77 ms 21984 KB Output is correct
26 Correct 78 ms 22064 KB Output is correct
27 Correct 183 ms 31844 KB Output is correct
28 Correct 172 ms 32020 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 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 9 ms 1748 KB Output is correct
37 Correct 184 ms 32320 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 7 ms 1780 KB Output is correct
41 Correct 167 ms 32116 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 4 ms 1368 KB Output is correct
45 Correct 89 ms 21980 KB Output is correct
46 Correct 0 ms 468 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 41 ms 8336 KB Output is correct
50 Correct 166 ms 32664 KB Output is correct
51 Correct 167 ms 31860 KB Output is correct
52 Correct 178 ms 32016 KB Output is correct
53 Correct 73 ms 21952 KB Output is correct
54 Correct 74 ms 21936 KB Output is correct
55 Correct 167 ms 32112 KB Output is correct
56 Correct 165 ms 31904 KB Output is correct
57 Correct 73 ms 22012 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 4 ms 1368 KB Output is correct
61 Correct 86 ms 22628 KB Output is correct
62 Correct 1 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 1 ms 348 KB Output is correct
65 Correct 44 ms 8384 KB Output is correct
66 Correct 75 ms 22492 KB Output is correct
67 Correct 78 ms 21980 KB Output is correct
68 Correct 79 ms 21960 KB Output is correct
69 Correct 73 ms 22208 KB Output is correct

Subtask #6
4.0 / 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 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 9 ms 1748 KB Output is correct
7 Correct 178 ms 31988 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1744 KB Output is correct
13 Correct 168 ms 32004 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 5 ms 1240 KB Output is correct
17 Correct 84 ms 21992 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 600 KB Output is correct
20 Correct 42 ms 8332 KB Output is correct
21 Correct 176 ms 31912 KB Output is correct
22 Correct 167 ms 31988 KB Output is correct
23 Correct 175 ms 31980 KB Output is correct
24 Correct 163 ms 32008 KB Output is correct
25 Correct 77 ms 21984 KB Output is correct
26 Correct 78 ms 22064 KB Output is correct
27 Correct 183 ms 31844 KB Output is correct
28 Correct 172 ms 32020 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 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 9 ms 1748 KB Output is correct
37 Correct 184 ms 32320 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 7 ms 1780 KB Output is correct
41 Correct 167 ms 32116 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 4 ms 1368 KB Output is correct
45 Correct 89 ms 21980 KB Output is correct
46 Correct 0 ms 468 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 41 ms 8336 KB Output is correct
50 Correct 166 ms 32664 KB Output is correct
51 Correct 167 ms 31860 KB Output is correct
52 Correct 178 ms 32016 KB Output is correct
53 Correct 73 ms 21952 KB Output is correct
54 Correct 74 ms 21936 KB Output is correct
55 Correct 167 ms 32112 KB Output is correct
56 Correct 165 ms 31904 KB Output is correct
57 Correct 73 ms 22012 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 600 KB Output is correct
61 Correct 41 ms 8360 KB Output is correct
62 Correct 161 ms 31956 KB Output is correct
63 Correct 175 ms 32180 KB Output is correct
64 Correct 164 ms 31876 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 43 ms 8372 KB Output is correct
67 Correct 164 ms 32252 KB Output is correct
68 Correct 178 ms 31928 KB Output is correct
69 Correct 173 ms 31984 KB Output is correct
70 Correct 1 ms 348 KB Output is correct
71 Correct 0 ms 464 KB Output is correct
72 Correct 1 ms 348 KB Output is correct
73 Correct 41 ms 8284 KB Output is correct
74 Correct 170 ms 32204 KB Output is correct
75 Correct 162 ms 32464 KB Output is correct
76 Correct 159 ms 31996 KB Output is correct
77 Correct 158 ms 32180 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 1 ms 348 KB Output is correct
80 Correct 4 ms 1368 KB Output is correct
81 Correct 86 ms 22628 KB Output is correct
82 Correct 1 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 1 ms 348 KB Output is correct
85 Correct 44 ms 8384 KB Output is correct
86 Correct 75 ms 22492 KB Output is correct
87 Correct 78 ms 21980 KB Output is correct
88 Correct 79 ms 21960 KB Output is correct
89 Correct 73 ms 22208 KB Output is correct
90 Correct 0 ms 348 KB Output is correct
91 Correct 0 ms 600 KB Output is correct
92 Correct 4 ms 1372 KB Output is correct
93 Correct 99 ms 22020 KB Output is correct
94 Correct 0 ms 348 KB Output is correct
95 Correct 0 ms 344 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 19 ms 5900 KB Output is correct
98 Correct 73 ms 22044 KB Output is correct
99 Correct 74 ms 22236 KB Output is correct
100 Correct 72 ms 21896 KB Output is correct
101 Correct 72 ms 21948 KB Output is correct
102 Correct 72 ms 22204 KB Output is correct
103 Correct 77 ms 22144 KB Output is correct
104 Correct 75 ms 22124 KB Output is correct
105 Correct 77 ms 21936 KB Output is correct