oj.uz

Submission #983802

# Submission time Handle Problem Language Result Execution time Memory
983802 2024-05-16T06:31:44 Z phoenix0423 Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 166 ms 24452 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
#define pb push_back
#define eb emplace_back
#include "supertrees.h"

struct DSU{
	vector<int> par, siz;
	int n;
	DSU(int _n) : n(_n){
		par.resize(n);
		siz.resize(n, 1);
		iota(par.begin(), par.end(), 0);
	}
	int root(int x){ return x == par[x] ? x : par[x] = root(par[x]);}
	bool same(int x, int y){ return root(x) == root(y);}
	void unite(int x, int y){
		x = root(x), y = root(y);
		if(x == y) return;
		if(siz[x] > siz[y]) swap(x, y);
		siz[y] += siz[x];
		par[x] = y;
	}
};

int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	vector<vector<int>> ans(n, vector<int>(n));
	DSU dsu(n), dsu2(n);
	for(int i = 0; i < n; i++){
		if(p[i][i] != 1) return 0;
		for(int j = i + 1; j < n; j++){
			if(p[i][j] == 3) return 0;
			if(p[i][j] != p[j][i]) return 0;
			if(p[i][j] == 1) dsu.unite(i, j);
		}
	}
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(p[i][j] == 2){
				if(dsu.same(i, j)) return 0;
				dsu2.unite(dsu.root(i), dsu.root(j));
			}
		}
	}
	auto add = [&](int x, int y) -> void {
		ans[x][y] = ans[y][x] = 1;
	};
	vector<vector<int>> loop(n);
	for(int i = 0; i < n; i++){
		if(i != dsu.root(i)){
			add(i, dsu.root(i));
		}
		if(i != dsu2.root(i)) loop[dsu2.root(i)].pb(i);
	}
	for(int i = 0; i < n; i++){
		if(!loop[i].size()) continue;
		if(loop[i].size() == 1) return 0;
		loop[i].pb(i);
		for(int j = 0; j < loop[i].size(); j++){
			add(loop[i][j], loop[i][(j + 1) % loop[i].size()]);
		}
	}
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(!p[i][j] && dsu2.same(dsu.root(i), dsu.root(j))) return 0;
		}
	}
	build(ans);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:62:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |   for(int j = 0; j < loop[i].size(); j++){
      |                  ~~^~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1332 KB Output is correct
7 Correct 163 ms 24000 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1332 KB Output is correct
7 Correct 163 ms 24000 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1372 KB Output is correct
13 Correct 155 ms 24148 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 964 KB Output is correct
17 Correct 68 ms 14028 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 428 KB Output is correct
20 Correct 40 ms 6224 KB Output is correct
21 Correct 156 ms 24052 KB Output is correct
22 Correct 153 ms 24144 KB Output is correct
23 Correct 158 ms 24052 KB Output is correct
24 Correct 154 ms 24156 KB Output is correct
25 Correct 71 ms 14072 KB Output is correct
26 Correct 66 ms 14164 KB Output is correct
27 Correct 155 ms 24144 KB Output is correct
28 Correct 156 ms 24288 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 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 7 ms 1372 KB Output is correct
9 Correct 159 ms 24452 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 1372 KB Output is correct
13 Correct 154 ms 24148 KB Output is correct
14 Correct 1 ms 436 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 85 ms 14068 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 39 ms 6260 KB Output is correct
22 Correct 160 ms 24148 KB Output is correct
23 Correct 156 ms 24072 KB Output is correct
24 Correct 160 ms 24128 KB Output is correct
25 Correct 65 ms 14160 KB Output is correct
26 Correct 66 ms 14216 KB Output is correct
27 Correct 157 ms 24000 KB Output is correct
28 Correct 157 ms 23936 KB Output is correct
29 Correct 103 ms 14164 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 41 ms 6188 KB Output is correct
5 Correct 155 ms 24148 KB Output is correct
6 Correct 155 ms 24252 KB Output is correct
7 Correct 153 ms 24144 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 39 ms 6232 KB Output is correct
10 Correct 155 ms 24184 KB Output is correct
11 Correct 162 ms 24148 KB Output is correct
12 Correct 161 ms 24312 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 40 ms 6228 KB Output is correct
17 Correct 161 ms 24148 KB Output is correct
18 Correct 166 ms 24148 KB Output is correct
19 Correct 159 ms 24148 KB Output is correct
20 Correct 160 ms 24144 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1332 KB Output is correct
7 Correct 163 ms 24000 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1372 KB Output is correct
13 Correct 155 ms 24148 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 964 KB Output is correct
17 Correct 68 ms 14028 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 428 KB Output is correct
20 Correct 40 ms 6224 KB Output is correct
21 Correct 156 ms 24052 KB Output is correct
22 Correct 153 ms 24144 KB Output is correct
23 Correct 158 ms 24052 KB Output is correct
24 Correct 154 ms 24156 KB Output is correct
25 Correct 71 ms 14072 KB Output is correct
26 Correct 66 ms 14164 KB Output is correct
27 Correct 155 ms 24144 KB Output is correct
28 Correct 156 ms 24288 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 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 7 ms 1372 KB Output is correct
37 Correct 159 ms 24452 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 1372 KB Output is correct
41 Correct 154 ms 24148 KB Output is correct
42 Correct 1 ms 436 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 85 ms 14068 KB Output is correct
46 Correct 1 ms 344 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 39 ms 6260 KB Output is correct
50 Correct 160 ms 24148 KB Output is correct
51 Correct 156 ms 24072 KB Output is correct
52 Correct 160 ms 24128 KB Output is correct
53 Correct 65 ms 14160 KB Output is correct
54 Correct 66 ms 14216 KB Output is correct
55 Correct 157 ms 24000 KB Output is correct
56 Correct 157 ms 23936 KB Output is correct
57 Correct 103 ms 14164 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 3 ms 860 KB Output is correct
61 Correct 65 ms 14216 KB Output is correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 40 ms 6224 KB Output is correct
66 Correct 70 ms 14060 KB Output is correct
67 Correct 66 ms 14164 KB Output is correct
68 Correct 66 ms 14200 KB Output is correct
69 Correct 64 ms 14084 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1332 KB Output is correct
7 Correct 163 ms 24000 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1372 KB Output is correct
13 Correct 155 ms 24148 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 964 KB Output is correct
17 Correct 68 ms 14028 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 428 KB Output is correct
20 Correct 40 ms 6224 KB Output is correct
21 Correct 156 ms 24052 KB Output is correct
22 Correct 153 ms 24144 KB Output is correct
23 Correct 158 ms 24052 KB Output is correct
24 Correct 154 ms 24156 KB Output is correct
25 Correct 71 ms 14072 KB Output is correct
26 Correct 66 ms 14164 KB Output is correct
27 Correct 155 ms 24144 KB Output is correct
28 Correct 156 ms 24288 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 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 7 ms 1372 KB Output is correct
37 Correct 159 ms 24452 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 1372 KB Output is correct
41 Correct 154 ms 24148 KB Output is correct
42 Correct 1 ms 436 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 85 ms 14068 KB Output is correct
46 Correct 1 ms 344 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 39 ms 6260 KB Output is correct
50 Correct 160 ms 24148 KB Output is correct
51 Correct 156 ms 24072 KB Output is correct
52 Correct 160 ms 24128 KB Output is correct
53 Correct 65 ms 14160 KB Output is correct
54 Correct 66 ms 14216 KB Output is correct
55 Correct 157 ms 24000 KB Output is correct
56 Correct 157 ms 23936 KB Output is correct
57 Correct 103 ms 14164 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 41 ms 6188 KB Output is correct
62 Correct 155 ms 24148 KB Output is correct
63 Correct 155 ms 24252 KB Output is correct
64 Correct 153 ms 24144 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 39 ms 6232 KB Output is correct
67 Correct 155 ms 24184 KB Output is correct
68 Correct 162 ms 24148 KB Output is correct
69 Correct 161 ms 24312 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 344 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 40 ms 6228 KB Output is correct
74 Correct 161 ms 24148 KB Output is correct
75 Correct 166 ms 24148 KB Output is correct
76 Correct 159 ms 24148 KB Output is correct
77 Correct 160 ms 24144 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 3 ms 860 KB Output is correct
81 Correct 65 ms 14216 KB Output is correct
82 Correct 0 ms 344 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 40 ms 6224 KB Output is correct
86 Correct 70 ms 14060 KB Output is correct
87 Correct 66 ms 14164 KB Output is correct
88 Correct 66 ms 14200 KB Output is correct
89 Correct 64 ms 14084 KB Output is correct
90 Correct 0 ms 344 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 3 ms 960 KB Output is correct
93 Correct 62 ms 14084 KB Output is correct
94 Correct 0 ms 348 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 16 ms 3708 KB Output is correct
98 Correct 64 ms 14208 KB Output is correct
99 Correct 63 ms 14212 KB Output is correct
100 Correct 62 ms 14160 KB Output is correct
101 Correct 67 ms 14340 KB Output is correct
102 Correct 62 ms 14088 KB Output is correct
103 Correct 57 ms 14164 KB Output is correct
104 Correct 58 ms 14196 KB Output is correct
105 Correct 63 ms 14216 KB Output is correct