oj.uz

Submission #300695

# Submission time Handle Problem Language Result Execution time Memory
300695 2020-09-17T12:08:43 Z gs14004 Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 296 ms 22300 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
#define sz(v) ((int)(v).size())
#define all(v) (v).begin(), (v).end()
using namespace std;
using lint = long long;
using llf = long double;
const int MAXN = 1505;

struct disj{
	int pa[MAXN];
	int sz[MAXN];
	void init(int n){
		iota(pa, pa + n + 1, 0);
		fill(sz, sz + n + 1, 1);
	}
	int find(int x){
		return pa[x] = (pa[x] == x ? x : find(pa[x]));
	}
	int getsz(int x){ return sz[find(x)]; }
	bool uni(int p, int q){
		p = find(p);
		q = find(q);
		if(p == q) return 0;
		sz[p] += sz[q];
		pa[q] = p; return 1;
	}
}disj, cx;

int n;

int construct(std::vector<std::vector<int>> a) {
	n = sz(a);
	disj.init(n);
	std::vector<std::vector<int>> answer(n);
	for(int i=0; i<n; i++){
		for(int j=0; j<n; j++){
			if(a[i][j] == 1) disj.uni(i, j);
			if(a[i][j] == 3) return 0;
		}
		answer[i].resize(n);
	}
	vector<int> v;
	for(int i=0; i<n; i++){
		if(disj.find(i) != i){
			answer[i][disj.find(i)] = 1;
			answer[disj.find(i)][i] = 1;
		}
		else v.push_back(i);
	}
	for(int i=0; i<n; i++){
		for(int j=0; j<n; j++){
			if(a[i][j] != a[disj.find(i)][disj.find(j)]) return 0;
		}
	}
	cx.init(n);
	for(auto &i : v){
		for(auto &j : v){
			if(a[i][j] == 2){
				cx.uni(i, j);
			}
		}
	}
	vector<int> v2[MAXN];
	for(auto &i : v){
		if(cx.getsz(i) > 1) v2[cx.find(i)].push_back(i);
	}
	for(int i=0; i<n; i++){
		if(sz(v2[i]) && sz(v2[i]) <= 2) return 0;
		for(auto &x : v2[i]){
			for(auto &y : v2[i]){
				if(x != y && a[x][y] != 2) return 0;
			}
		}
		if(sz(v2[i])){
			for(int j=0; j<sz(v2[i]); j++){
				int l = v2[i][j];
				int r = v2[i][(j+1)%sz(v2[i])];
				answer[l][r] = answer[r][l] = 1;
			}
		}
	}
	disj.init(n);
	for(int i=0; i<n; i++){
		for(int j=0; j<n; j++){
			if(answer[i][j]) disj.uni(i, j);
		}
	}
	for(int i=0; i<n; i++){
		for(int j=0; j<n; j++){
			if(a[i][j] == 0 && disj.find(i) == disj.find(j)) return 0;
		}
	}
	build(answer);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 11 ms 1280 KB Output is correct
7 Correct 254 ms 22264 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 11 ms 1280 KB Output is correct
7 Correct 254 ms 22264 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 247 ms 22136 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 118 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 65 ms 5880 KB Output is correct
21 Correct 254 ms 22136 KB Output is correct
22 Correct 249 ms 22136 KB Output is correct
23 Correct 268 ms 22136 KB Output is correct
24 Correct 242 ms 22136 KB Output is correct
25 Correct 100 ms 12152 KB Output is correct
26 Correct 96 ms 12184 KB Output is correct
27 Correct 267 ms 22136 KB Output is correct
28 Correct 243 ms 22136 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 10 ms 1280 KB Output is correct
9 Correct 243 ms 22136 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 254 ms 22300 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 896 KB Output is correct
17 Correct 127 ms 12280 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 63 ms 5880 KB Output is correct
22 Correct 253 ms 22152 KB Output is correct
23 Correct 253 ms 22128 KB Output is correct
24 Correct 269 ms 22156 KB Output is correct
25 Correct 101 ms 12280 KB Output is correct
26 Correct 110 ms 12184 KB Output is correct
27 Correct 250 ms 22264 KB Output is correct
28 Correct 266 ms 22108 KB Output is correct
29 Correct 105 ms 12280 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 65 ms 5920 KB Output is correct
5 Correct 296 ms 22240 KB Output is correct
6 Correct 248 ms 22136 KB Output is correct
7 Correct 259 ms 22136 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 63 ms 5880 KB Output is correct
10 Correct 283 ms 22220 KB Output is correct
11 Correct 251 ms 22136 KB Output is correct
12 Correct 265 ms 22108 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 64 ms 5880 KB Output is correct
17 Correct 262 ms 22148 KB Output is correct
18 Correct 262 ms 22244 KB Output is correct
19 Correct 259 ms 22228 KB Output is correct
20 Correct 242 ms 22264 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 11 ms 1280 KB Output is correct
7 Correct 254 ms 22264 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 247 ms 22136 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 118 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 65 ms 5880 KB Output is correct
21 Correct 254 ms 22136 KB Output is correct
22 Correct 249 ms 22136 KB Output is correct
23 Correct 268 ms 22136 KB Output is correct
24 Correct 242 ms 22136 KB Output is correct
25 Correct 100 ms 12152 KB Output is correct
26 Correct 96 ms 12184 KB Output is correct
27 Correct 267 ms 22136 KB Output is correct
28 Correct 243 ms 22136 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 384 KB Output is correct
36 Correct 10 ms 1280 KB Output is correct
37 Correct 243 ms 22136 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 11 ms 1408 KB Output is correct
41 Correct 254 ms 22300 KB Output is correct
42 Correct 0 ms 384 KB Output is correct
43 Correct 1 ms 384 KB Output is correct
44 Correct 5 ms 896 KB Output is correct
45 Correct 127 ms 12280 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 63 ms 5880 KB Output is correct
50 Correct 253 ms 22152 KB Output is correct
51 Correct 253 ms 22128 KB Output is correct
52 Correct 269 ms 22156 KB Output is correct
53 Correct 101 ms 12280 KB Output is correct
54 Correct 110 ms 12184 KB Output is correct
55 Correct 250 ms 22264 KB Output is correct
56 Correct 266 ms 22108 KB Output is correct
57 Correct 105 ms 12280 KB Output is correct
58 Correct 1 ms 512 KB Output is correct
59 Correct 1 ms 384 KB Output is correct
60 Correct 5 ms 768 KB Output is correct
61 Correct 112 ms 12124 KB Output is correct
62 Correct 1 ms 384 KB Output is correct
63 Correct 1 ms 384 KB Output is correct
64 Correct 1 ms 384 KB Output is correct
65 Correct 62 ms 5880 KB Output is correct
66 Correct 98 ms 12152 KB Output is correct
67 Correct 119 ms 12152 KB Output is correct
68 Correct 96 ms 12152 KB Output is correct
69 Correct 102 ms 12152 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 11 ms 1280 KB Output is correct
7 Correct 254 ms 22264 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 247 ms 22136 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 118 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 65 ms 5880 KB Output is correct
21 Correct 254 ms 22136 KB Output is correct
22 Correct 249 ms 22136 KB Output is correct
23 Correct 268 ms 22136 KB Output is correct
24 Correct 242 ms 22136 KB Output is correct
25 Correct 100 ms 12152 KB Output is correct
26 Correct 96 ms 12184 KB Output is correct
27 Correct 267 ms 22136 KB Output is correct
28 Correct 243 ms 22136 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 384 KB Output is correct
36 Correct 10 ms 1280 KB Output is correct
37 Correct 243 ms 22136 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 11 ms 1408 KB Output is correct
41 Correct 254 ms 22300 KB Output is correct
42 Correct 0 ms 384 KB Output is correct
43 Correct 1 ms 384 KB Output is correct
44 Correct 5 ms 896 KB Output is correct
45 Correct 127 ms 12280 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 63 ms 5880 KB Output is correct
50 Correct 253 ms 22152 KB Output is correct
51 Correct 253 ms 22128 KB Output is correct
52 Correct 269 ms 22156 KB Output is correct
53 Correct 101 ms 12280 KB Output is correct
54 Correct 110 ms 12184 KB Output is correct
55 Correct 250 ms 22264 KB Output is correct
56 Correct 266 ms 22108 KB Output is correct
57 Correct 105 ms 12280 KB Output is correct
58 Correct 1 ms 384 KB Output is correct
59 Correct 1 ms 384 KB Output is correct
60 Correct 0 ms 384 KB Output is correct
61 Correct 65 ms 5920 KB Output is correct
62 Correct 296 ms 22240 KB Output is correct
63 Correct 248 ms 22136 KB Output is correct
64 Correct 259 ms 22136 KB Output is correct
65 Correct 1 ms 384 KB Output is correct
66 Correct 63 ms 5880 KB Output is correct
67 Correct 283 ms 22220 KB Output is correct
68 Correct 251 ms 22136 KB Output is correct
69 Correct 265 ms 22108 KB Output is correct
70 Correct 1 ms 384 KB Output is correct
71 Correct 1 ms 512 KB Output is correct
72 Correct 1 ms 384 KB Output is correct
73 Correct 64 ms 5880 KB Output is correct
74 Correct 262 ms 22148 KB Output is correct
75 Correct 262 ms 22244 KB Output is correct
76 Correct 259 ms 22228 KB Output is correct
77 Correct 242 ms 22264 KB Output is correct
78 Correct 1 ms 512 KB Output is correct
79 Correct 1 ms 384 KB Output is correct
80 Correct 5 ms 768 KB Output is correct
81 Correct 112 ms 12124 KB Output is correct
82 Correct 1 ms 384 KB Output is correct
83 Correct 1 ms 384 KB Output is correct
84 Correct 1 ms 384 KB Output is correct
85 Correct 62 ms 5880 KB Output is correct
86 Correct 98 ms 12152 KB Output is correct
87 Correct 119 ms 12152 KB Output is correct
88 Correct 96 ms 12152 KB Output is correct
89 Correct 102 ms 12152 KB Output is correct
90 Correct 1 ms 384 KB Output is correct
91 Correct 1 ms 384 KB Output is correct
92 Correct 4 ms 640 KB Output is correct
93 Correct 100 ms 8184 KB Output is correct
94 Correct 1 ms 384 KB Output is correct
95 Correct 1 ms 384 KB Output is correct
96 Correct 1 ms 384 KB Output is correct
97 Correct 24 ms 2424 KB Output is correct
98 Correct 95 ms 8440 KB Output is correct
99 Correct 105 ms 8824 KB Output is correct
100 Correct 98 ms 8568 KB Output is correct
101 Correct 96 ms 9592 KB Output is correct
102 Correct 97 ms 8184 KB Output is correct
103 Correct 95 ms 8184 KB Output is correct
104 Correct 96 ms 8184 KB Output is correct
105 Correct 102 ms 8184 KB Output is correct