oj.uz

Submission #903856

# Submission time Handle Problem Language Result Execution time Memory
903856 2024-01-11T12:31:21 Z ByeWorld Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 241 ms 23652 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define pb push_back
#define lb lower_bound
using namespace std;
const int MAXN = 1e3+10;
const double SMALL = 1e-6;
typedef pair<int,int> pii;
typedef pair<pii,int> ipii;

int n;
bool tag[MAXN], done[MAXN];
vector <vector<int>> adj;
vector <int> cc[MAXN];

void bd(int x, int y){
	adj[x][y] = 1; adj[y][x] = 1;
}

struct DSU {
	int par[MAXN], siz[MAXN];
	void bd(){
		for(int i=0; i<n; i++){
			par[i] = i; siz[i] = 1;
			cc[i].pb(i);
		}
	}
	int f(int x){
		if(x == par[x]) return x;
		return par[x] = f(par[x]);
	}
	bool con(int x, int y){
		return f(x) == f(y);
	}
	void mer(int x, int y){
		if(con(x, y)) return;
		x = f(x); y = f(y);
		if(siz[x] > siz[y]) swap(x, y);
		par[x] = y; siz[y] += siz[x];
		for(auto in : cc[x]) cc[y].pb(in);
	}
} A;

int construct(vector<vector<int>> p) {
	n = p.size();
	vector <int> te(n);
	for(int i=0; i<n; i++) adj.pb(te);
	A.bd();
	
	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++) {
		if(done[i]) continue;
		for(int x=0; x<n; x++) tag[x] = 0;

		vector <int> vec; vec.pb(i); tag[i] = 1;
		for(int j=i+1; j < n; j++){
			if(p[i][j] == 1){
				vec.pb(j); tag[j] = 1;
			}	
		}
		//for(auto in : vec) cout << in << "pp\n";
		for(auto in : vec){
			//cout << in << " in\n";
			done[in] = 1;
			for(int x=0; x<n; x++){
				if(tag[x] && p[in][x] != 1) return 0; //harusnya 1
				if(!tag[x] && p[in][x] == 1) return 0;
			}
		}
		for(int i=0; i+1<vec.size(); i++){ // build
			bd(vec[i], vec[i+1]);
			A.mer(vec[i], vec[i+1]);
		}
	}
	// for(int i=0; i<n; i++){
	// 	for(int j=0; j<n; j++) cout << adj[i][j] << ' ';
	// 	cout << '\n';
	// }
	// for(int i=0; i<n; i++){
	// 	if(A.f(i) == i){
	// 		for(auto in : cc[i]) cout << i << ' ' << in << " in\n";
	// 	}
	// }

	for(int i=0; i<n; i++) done[i] = 0;
	for(int i = 0; i < n; i++) {
		if(i != A.f(i) || done[A.f(i)]) continue;
		for(int x=0; x<n; x++) tag[x] = 0;

		vector <int> vec; vec.pb(A.f(i));
		for(int j=i+1; j < n; j++){
			if(p[i][j] == 2 && A.f(j)==j){ // par nya aj
				vec.pb(j); 
			}	
		}

		if(vec.size() == 1) continue;
		if(vec.size() == 2) return 0;

		vector <int> node;
		for(auto x : vec){
			for(auto in : cc[x]){
				node.pb(in); tag[in] = 1;
			}
		}
		//for(auto in: node) cout << in << " node\n";

		for(auto x : node){ // udh pernah connect
			for(auto y : node){
				if(x==y) continue; 
				if(p[x][y]==2 && A.con(x, y)) return 0;
			}
		}
		//for(auto in : vec) cout << in << "pp\n";
		for(auto in : node){
			//cout << in << " in\n";
			done[A.f(in)] = 1;
			for(int x=0; x<n; x++){
				if(x==in) continue;
				if(tag[x] && !A.con(in, x) && p[in][x] != 2) return 0; //harusnya 1
				if(!tag[x] && p[in][x] == 2) return 0;
			}
		}

		vector <int> s;
		for(auto in : node){
			s.pb(A.f(in));
		}
		sort(s.begin(), s.end());
		s.resize(unique(s.begin(), s.end()) - s.begin());

		//for(auto in : s) cout << in << " s\n";
		
		for(int i=0; i+1<s.size(); i++){ // build
			bd(s[i], s[i+1]);
		}
		bd(s[0], s.back());
	}

	for(int i=0; i<n; i++) adj[i][i] = 0;
	build(adj);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:77:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |   for(int i=0; i+1<vec.size(); i++){ // build
      |                ~~~^~~~~~~~~~~
supertrees.cpp:141:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  141 |   for(int i=0; i+1<s.size(); i++){ // build
      |                ~~~^~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 352 KB Output is correct
2 Correct 0 ms 352 KB Output is correct
3 Correct 1 ms 356 KB Output is correct
4 Correct 0 ms 352 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1380 KB Output is correct
7 Correct 192 ms 23488 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 352 KB Output is correct
2 Correct 0 ms 352 KB Output is correct
3 Correct 1 ms 356 KB Output is correct
4 Correct 0 ms 352 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1380 KB Output is correct
7 Correct 192 ms 23488 KB Output is correct
8 Correct 1 ms 484 KB Output is correct
9 Correct 1 ms 360 KB Output is correct
10 Correct 0 ms 360 KB Output is correct
11 Correct 1 ms 360 KB Output is correct
12 Correct 7 ms 1232 KB Output is correct
13 Correct 156 ms 23464 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 352 KB Output is correct
16 Correct 3 ms 964 KB Output is correct
17 Correct 65 ms 13496 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 500 KB Output is correct
20 Correct 58 ms 6308 KB Output is correct
21 Correct 153 ms 23396 KB Output is correct
22 Correct 166 ms 23652 KB Output is correct
23 Correct 159 ms 23532 KB Output is correct
24 Correct 159 ms 23516 KB Output is correct
25 Correct 63 ms 13396 KB Output is correct
26 Correct 64 ms 13468 KB Output is correct
27 Correct 175 ms 23380 KB Output is correct
28 Correct 160 ms 23476 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 7 ms 1400 KB Output is correct
9 Correct 162 ms 23496 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 162 ms 23476 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 964 KB Output is correct
17 Correct 69 ms 13608 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 500 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 38 ms 6188 KB Output is correct
22 Correct 157 ms 23444 KB Output is correct
23 Correct 169 ms 23336 KB Output is correct
24 Correct 161 ms 23332 KB Output is correct
25 Correct 78 ms 13592 KB Output is correct
26 Correct 67 ms 13456 KB Output is correct
27 Correct 185 ms 23320 KB Output is correct
28 Correct 161 ms 23452 KB Output is correct
29 Correct 62 ms 13416 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 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 42 ms 6300 KB Output is correct
5 Correct 153 ms 23300 KB Output is correct
6 Correct 156 ms 23532 KB Output is correct
7 Correct 170 ms 23340 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 46 ms 6228 KB Output is correct
10 Correct 149 ms 23444 KB Output is correct
11 Correct 171 ms 23356 KB Output is correct
12 Correct 167 ms 23644 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 464 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 37 ms 6212 KB Output is correct
17 Correct 163 ms 23436 KB Output is correct
18 Correct 241 ms 23460 KB Output is correct
19 Correct 154 ms 23324 KB Output is correct
20 Correct 166 ms 23300 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 352 KB Output is correct
2 Correct 0 ms 352 KB Output is correct
3 Correct 1 ms 356 KB Output is correct
4 Correct 0 ms 352 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1380 KB Output is correct
7 Correct 192 ms 23488 KB Output is correct
8 Correct 1 ms 484 KB Output is correct
9 Correct 1 ms 360 KB Output is correct
10 Correct 0 ms 360 KB Output is correct
11 Correct 1 ms 360 KB Output is correct
12 Correct 7 ms 1232 KB Output is correct
13 Correct 156 ms 23464 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 352 KB Output is correct
16 Correct 3 ms 964 KB Output is correct
17 Correct 65 ms 13496 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 500 KB Output is correct
20 Correct 58 ms 6308 KB Output is correct
21 Correct 153 ms 23396 KB Output is correct
22 Correct 166 ms 23652 KB Output is correct
23 Correct 159 ms 23532 KB Output is correct
24 Correct 159 ms 23516 KB Output is correct
25 Correct 63 ms 13396 KB Output is correct
26 Correct 64 ms 13468 KB Output is correct
27 Correct 175 ms 23380 KB Output is correct
28 Correct 160 ms 23476 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 7 ms 1400 KB Output is correct
37 Correct 162 ms 23496 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1372 KB Output is correct
41 Correct 162 ms 23476 KB Output is correct
42 Correct 1 ms 468 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 964 KB Output is correct
45 Correct 69 ms 13608 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 500 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 38 ms 6188 KB Output is correct
50 Correct 157 ms 23444 KB Output is correct
51 Correct 169 ms 23336 KB Output is correct
52 Correct 161 ms 23332 KB Output is correct
53 Correct 78 ms 13592 KB Output is correct
54 Correct 67 ms 13456 KB Output is correct
55 Correct 185 ms 23320 KB Output is correct
56 Correct 161 ms 23452 KB Output is correct
57 Correct 62 ms 13416 KB Output is correct
58 Correct 1 ms 344 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 3 ms 988 KB Output is correct
61 Correct 70 ms 13604 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 1 ms 460 KB Output is correct
64 Correct 0 ms 472 KB Output is correct
65 Correct 37 ms 6356 KB Output is correct
66 Correct 78 ms 13480 KB Output is correct
67 Correct 83 ms 13476 KB Output is correct
68 Correct 77 ms 13392 KB Output is correct
69 Correct 62 ms 13392 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 352 KB Output is correct
2 Correct 0 ms 352 KB Output is correct
3 Correct 1 ms 356 KB Output is correct
4 Correct 0 ms 352 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1380 KB Output is correct
7 Correct 192 ms 23488 KB Output is correct
8 Correct 1 ms 484 KB Output is correct
9 Correct 1 ms 360 KB Output is correct
10 Correct 0 ms 360 KB Output is correct
11 Correct 1 ms 360 KB Output is correct
12 Correct 7 ms 1232 KB Output is correct
13 Correct 156 ms 23464 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 352 KB Output is correct
16 Correct 3 ms 964 KB Output is correct
17 Correct 65 ms 13496 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 500 KB Output is correct
20 Correct 58 ms 6308 KB Output is correct
21 Correct 153 ms 23396 KB Output is correct
22 Correct 166 ms 23652 KB Output is correct
23 Correct 159 ms 23532 KB Output is correct
24 Correct 159 ms 23516 KB Output is correct
25 Correct 63 ms 13396 KB Output is correct
26 Correct 64 ms 13468 KB Output is correct
27 Correct 175 ms 23380 KB Output is correct
28 Correct 160 ms 23476 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 7 ms 1400 KB Output is correct
37 Correct 162 ms 23496 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1372 KB Output is correct
41 Correct 162 ms 23476 KB Output is correct
42 Correct 1 ms 468 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 964 KB Output is correct
45 Correct 69 ms 13608 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 500 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 38 ms 6188 KB Output is correct
50 Correct 157 ms 23444 KB Output is correct
51 Correct 169 ms 23336 KB Output is correct
52 Correct 161 ms 23332 KB Output is correct
53 Correct 78 ms 13592 KB Output is correct
54 Correct 67 ms 13456 KB Output is correct
55 Correct 185 ms 23320 KB Output is correct
56 Correct 161 ms 23452 KB Output is correct
57 Correct 62 ms 13416 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 42 ms 6300 KB Output is correct
62 Correct 153 ms 23300 KB Output is correct
63 Correct 156 ms 23532 KB Output is correct
64 Correct 170 ms 23340 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 46 ms 6228 KB Output is correct
67 Correct 149 ms 23444 KB Output is correct
68 Correct 171 ms 23356 KB Output is correct
69 Correct 167 ms 23644 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 464 KB Output is correct
72 Correct 1 ms 344 KB Output is correct
73 Correct 37 ms 6212 KB Output is correct
74 Correct 163 ms 23436 KB Output is correct
75 Correct 241 ms 23460 KB Output is correct
76 Correct 154 ms 23324 KB Output is correct
77 Correct 166 ms 23300 KB Output is correct
78 Correct 1 ms 344 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 3 ms 988 KB Output is correct
81 Correct 70 ms 13604 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 1 ms 460 KB Output is correct
84 Correct 0 ms 472 KB Output is correct
85 Correct 37 ms 6356 KB Output is correct
86 Correct 78 ms 13480 KB Output is correct
87 Correct 83 ms 13476 KB Output is correct
88 Correct 77 ms 13392 KB Output is correct
89 Correct 62 ms 13392 KB Output is correct
90 Correct 1 ms 600 KB Output is correct
91 Correct 1 ms 344 KB Output is correct
92 Correct 3 ms 860 KB Output is correct
93 Correct 61 ms 13604 KB Output is correct
94 Correct 1 ms 344 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 23 ms 3932 KB Output is correct
98 Correct 60 ms 14236 KB Output is correct
99 Correct 63 ms 14120 KB Output is correct
100 Correct 66 ms 14292 KB Output is correct
101 Correct 62 ms 14108 KB Output is correct
102 Correct 62 ms 14160 KB Output is correct
103 Correct 81 ms 14120 KB Output is correct
104 Correct 60 ms 14164 KB Output is correct
105 Correct 66 ms 14104 KB Output is correct