oj.uz

Submission #301580

# Submission time Handle Problem Language Result Execution time Memory
301580 2020-09-18T04:58:18 Z Batyr Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 285 ms 26236 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
#define ll long long
#define pii pair<int,int>
#define ff first
#define ss second
#define sz(a) (int)a.size()
#define pb push_back
const int maxn=1e3+5;
// head

int n;
int d[maxn];
int b[maxn];
vector<vector<int>> p;
vector<vector<int>> ans;

int ata(int x){
	if(x==d[x]) return x;
	return d[x]=ata(d[x]);
}

int ata2(int x){
	if(x==b[x]) return x;
	return b[x]=ata2(b[x]);
}

int f(vector<int>v){
	if(sz(v)==0) return 1;
	for(int i = 0;i < sz(v);i++) b[v[i]]=v[i];
	for(int i = 0;i < sz(v);i++){
		for(int j = 0;j < i;j++){
			if(p[v[i]][v[j]]==1){
				int x=ata2(v[i]),y=ata2(v[j]);
				if(x != y) b[y]=x;
			}
		}
	}
	vector<int> br[n+1];
	set<int> s;
	for(int i = 0;i < sz(v);i++){
		ata2(v[i]);
		br[b[v[i]]].pb(v[i]);
		s.insert(b[v[i]]);
	}
	for(int i = 0;i < n;i++){
		for(int j = 0;j < sz(br[i]);j++){
			for(int k = 0;k < j;k++){
				if(p[br[i][j]][br[i][k]]==2) return 0;
			}
			if(j > 0) ans[br[i][j]][br[i][j-1]]=1,ans[br[i][j-1]][br[i][j]]=1;
		}
	}
	if(sz(s)==2) return 0;
	if(sz(s)==1) return 1;
	int fi=-1,ls=-1;
	for(auto i : s){
		if(fi==-1) fi=i;
		if(ls != -1) ans[i][ls]=1,ans[ls][i]=1;
		ls=i;
	}
	ans[ls][fi]=1,ans[fi][ls]=1;
	return 1;
}

int construct(vector<vector<int>> _p) {
	p = _p;
	n = p.size();
	ans.resize(n);
	for(int i = 0;i < n;i++){
		d[i]=i;
		ans[i].resize(n);
	}
	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 = 0;j < i;j++){
			if(p[i][j]>0){
				int x=ata(i),y=ata(j);
				if(x != y) d[y]=x;
			}
		}
	}
	vector<int>v[n+1];
	for(int i = 0;i < n;i++){
		ata(i);
		v[d[i]].pb(i);
	}
	for(int i = 0;i < n;i++){
		for(int j = 0;j < sz(v[i]);j++){
			for(int k = 0;k < j;k++){
				if(p[v[i][j]][v[i][k]] == 0) return 0;
			}
		}
	}
	for(int i = 0;i < n;i++){
		int jog = f(v[i]);
		if(jog==0) return 0;
	}
	build(ans);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 488 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 268 ms 26176 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 488 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 268 ms 26176 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 13 ms 1408 KB Output is correct
13 Correct 253 ms 26104 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 1024 KB Output is correct
17 Correct 135 ms 16120 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 61 ms 6776 KB Output is correct
21 Correct 257 ms 26104 KB Output is correct
22 Correct 247 ms 26104 KB Output is correct
23 Correct 267 ms 26104 KB Output is correct
24 Correct 249 ms 26232 KB Output is correct
25 Correct 100 ms 16120 KB Output is correct
26 Correct 101 ms 16120 KB Output is correct
27 Correct 264 ms 26104 KB Output is correct
28 Correct 264 ms 26136 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 288 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 11 ms 1408 KB Output is correct
9 Correct 256 ms 26136 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 285 ms 26104 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 1024 KB Output is correct
17 Correct 141 ms 16120 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 1 ms 256 KB Output is correct
21 Correct 69 ms 6776 KB Output is correct
22 Correct 262 ms 26104 KB Output is correct
23 Correct 240 ms 26200 KB Output is correct
24 Correct 267 ms 26104 KB Output is correct
25 Correct 104 ms 16248 KB Output is correct
26 Correct 108 ms 16248 KB Output is correct
27 Correct 241 ms 26236 KB Output is correct
28 Correct 268 ms 26232 KB Output is correct
29 Correct 102 ms 16352 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 68 ms 6904 KB Output is correct
5 Correct 262 ms 26104 KB Output is correct
6 Correct 274 ms 26104 KB Output is correct
7 Correct 265 ms 26072 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 63 ms 6872 KB Output is correct
10 Correct 271 ms 26200 KB Output is correct
11 Correct 244 ms 26104 KB Output is correct
12 Correct 266 ms 26216 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 62 ms 6776 KB Output is correct
17 Correct 243 ms 26104 KB Output is correct
18 Correct 243 ms 26104 KB Output is correct
19 Correct 244 ms 26128 KB Output is correct
20 Correct 244 ms 26104 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 488 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 268 ms 26176 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 13 ms 1408 KB Output is correct
13 Correct 253 ms 26104 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 1024 KB Output is correct
17 Correct 135 ms 16120 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 61 ms 6776 KB Output is correct
21 Correct 257 ms 26104 KB Output is correct
22 Correct 247 ms 26104 KB Output is correct
23 Correct 267 ms 26104 KB Output is correct
24 Correct 249 ms 26232 KB Output is correct
25 Correct 100 ms 16120 KB Output is correct
26 Correct 101 ms 16120 KB Output is correct
27 Correct 264 ms 26104 KB Output is correct
28 Correct 264 ms 26136 KB Output is correct
29 Correct 1 ms 288 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 1 ms 256 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 11 ms 1408 KB Output is correct
37 Correct 256 ms 26136 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 11 ms 1408 KB Output is correct
41 Correct 285 ms 26104 KB Output is correct
42 Correct 0 ms 384 KB Output is correct
43 Correct 1 ms 256 KB Output is correct
44 Correct 5 ms 1024 KB Output is correct
45 Correct 141 ms 16120 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 69 ms 6776 KB Output is correct
50 Correct 262 ms 26104 KB Output is correct
51 Correct 240 ms 26200 KB Output is correct
52 Correct 267 ms 26104 KB Output is correct
53 Correct 104 ms 16248 KB Output is correct
54 Correct 108 ms 16248 KB Output is correct
55 Correct 241 ms 26236 KB Output is correct
56 Correct 268 ms 26232 KB Output is correct
57 Correct 102 ms 16352 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 1 ms 256 KB Output is correct
60 Correct 5 ms 1024 KB Output is correct
61 Correct 114 ms 16120 KB Output is correct
62 Correct 1 ms 256 KB Output is correct
63 Correct 1 ms 256 KB Output is correct
64 Correct 1 ms 256 KB Output is correct
65 Correct 61 ms 7004 KB Output is correct
66 Correct 105 ms 16120 KB Output is correct
67 Correct 103 ms 16120 KB Output is correct
68 Correct 98 ms 16120 KB Output is correct
69 Correct 105 ms 16376 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 488 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 268 ms 26176 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 13 ms 1408 KB Output is correct
13 Correct 253 ms 26104 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 1024 KB Output is correct
17 Correct 135 ms 16120 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 61 ms 6776 KB Output is correct
21 Correct 257 ms 26104 KB Output is correct
22 Correct 247 ms 26104 KB Output is correct
23 Correct 267 ms 26104 KB Output is correct
24 Correct 249 ms 26232 KB Output is correct
25 Correct 100 ms 16120 KB Output is correct
26 Correct 101 ms 16120 KB Output is correct
27 Correct 264 ms 26104 KB Output is correct
28 Correct 264 ms 26136 KB Output is correct
29 Correct 1 ms 288 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 1 ms 256 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 11 ms 1408 KB Output is correct
37 Correct 256 ms 26136 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 11 ms 1408 KB Output is correct
41 Correct 285 ms 26104 KB Output is correct
42 Correct 0 ms 384 KB Output is correct
43 Correct 1 ms 256 KB Output is correct
44 Correct 5 ms 1024 KB Output is correct
45 Correct 141 ms 16120 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 69 ms 6776 KB Output is correct
50 Correct 262 ms 26104 KB Output is correct
51 Correct 240 ms 26200 KB Output is correct
52 Correct 267 ms 26104 KB Output is correct
53 Correct 104 ms 16248 KB Output is correct
54 Correct 108 ms 16248 KB Output is correct
55 Correct 241 ms 26236 KB Output is correct
56 Correct 268 ms 26232 KB Output is correct
57 Correct 102 ms 16352 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 1 ms 256 KB Output is correct
60 Correct 1 ms 256 KB Output is correct
61 Correct 68 ms 6904 KB Output is correct
62 Correct 262 ms 26104 KB Output is correct
63 Correct 274 ms 26104 KB Output is correct
64 Correct 265 ms 26072 KB Output is correct
65 Correct 1 ms 256 KB Output is correct
66 Correct 63 ms 6872 KB Output is correct
67 Correct 271 ms 26200 KB Output is correct
68 Correct 244 ms 26104 KB Output is correct
69 Correct 266 ms 26216 KB Output is correct
70 Correct 1 ms 384 KB Output is correct
71 Correct 1 ms 256 KB Output is correct
72 Correct 1 ms 256 KB Output is correct
73 Correct 62 ms 6776 KB Output is correct
74 Correct 243 ms 26104 KB Output is correct
75 Correct 243 ms 26104 KB Output is correct
76 Correct 244 ms 26128 KB Output is correct
77 Correct 244 ms 26104 KB Output is correct
78 Correct 1 ms 256 KB Output is correct
79 Correct 1 ms 256 KB Output is correct
80 Correct 5 ms 1024 KB Output is correct
81 Correct 114 ms 16120 KB Output is correct
82 Correct 1 ms 256 KB Output is correct
83 Correct 1 ms 256 KB Output is correct
84 Correct 1 ms 256 KB Output is correct
85 Correct 61 ms 7004 KB Output is correct
86 Correct 105 ms 16120 KB Output is correct
87 Correct 103 ms 16120 KB Output is correct
88 Correct 98 ms 16120 KB Output is correct
89 Correct 105 ms 16376 KB Output is correct
90 Correct 1 ms 256 KB Output is correct
91 Correct 1 ms 256 KB Output is correct
92 Correct 5 ms 1024 KB Output is correct
93 Correct 109 ms 16120 KB Output is correct
94 Correct 1 ms 256 KB Output is correct
95 Correct 1 ms 256 KB Output is correct
96 Correct 1 ms 256 KB Output is correct
97 Correct 25 ms 4344 KB Output is correct
98 Correct 98 ms 16120 KB Output is correct
99 Correct 98 ms 16120 KB Output is correct
100 Correct 137 ms 16120 KB Output is correct
101 Correct 101 ms 16120 KB Output is correct
102 Correct 115 ms 16120 KB Output is correct
103 Correct 105 ms 16120 KB Output is correct
104 Correct 114 ms 16120 KB Output is correct
105 Correct 109 ms 16096 KB Output is correct