oj.uz

Submission #679123

# Submission time Handle Problem Language Result Execution time Memory
679123 2023-01-07T13:51:42 Z penguin133 Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 200 ms 24092 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
 
//#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
 
int par[1005], par2[1005];
vector<int> stuf[1005];
int getr(int x){
	return (par[x] == x ? x : par[x] = getr(par[x]));
}
int g2(int x){
	return (par2[x] == x ? x : par2[x] = g2(par2[x]));
}
 
void m2(int a, int b){
	a = g2(a), b = g2(b);
	if(a != b)par2[b] = a;
}
void merge(int a, int b){
	a = getr(a), b = getr(b);
	if(a != b)par[b] = a;
}
int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	for(int i=0;i<n;i++)par[i] = i;
	std::vector<std::vector<int>> ans;
	for (int i = 0; i < n; i++) {
		std::vector<int> row(n, 0);
		ans.push_back(row);
	}
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
          if(p[i][j] == 3)return 0;
			if(p[i][j])merge(i, j);
		}
	}
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			if(!p[i][j] && getr(i) == getr(j))return 0;
		}
	}
	for(int i=0;i<n;i++)par2[i] = i;
	for(int i=0;i<n;i++){
		vector<int> pos;
		for(int j=0;j<n;j++)if(getr(j) == i)pos.push_back(j);
		vector<int> pos2, pos3;
		for(auto j : pos){
			bool f = 1;
			for(auto k : pos){
				if(j == k)continue;
				if(p[j][k] != 2)f =0 ;
			}
			if(f)pos2.push_back(j);
			else {
				pos3.push_back(j);
				for(auto k : pos)if(p[j][k] == 1)m2(j, k);
			}
		}
		if((int)pos.size() <= 1)continue;
		if(((int)pos2.size() == 2 && (int)pos.size() == 2))return 0;
		for(int j=0;j<(int)pos2.size() - 1;j++){
			ans[pos2[j]][pos2[j+1]] = 1;
			ans[pos2[j+1]][pos2[j]] = 1;
		}
		if((int)pos.size() == (int)pos2.size() && (int)pos2.size() > 2){		
			ans[pos2[0]][pos2[(int)pos2.size() - 1]] = 1;
			ans[pos2[(int)pos2.size() - 1]][pos2[0]] = 1;
		}
		else if((int)pos.size() != (int)pos2.size()){
			for(int j=0;j<n;j++)stuf[j].clear();
			set <int> s;
			for(auto j : pos3){
				//cout << j << " " << g2(j) << '\n';
				stuf[g2(j)].push_back(j);
				s.insert(g2(j));
			}
			if((int)s.size() == 1 && (int)pos2.size() == 1)return 0;
			//cout << s.size() << '\n';
			int pre = -1, c1 = -1;
			for(auto j : s){
				for(int k=0;k<(int)stuf[j].size()-1;k++){
					ans[stuf[j][k]][stuf[j][k+1]] = 1;
					ans[stuf[j][k+1]][stuf[j][k]] = 1;
				}
				if(pre != -1){
					ans[stuf[pre][0]][stuf[j][0]] = 1;
					ans[stuf[j][0]][stuf[pre][0]] = 1;
				}
				else{
					if(pos2.size()){
						ans[pos2[0]][stuf[j][0]] = 1;
						ans[stuf[j][0]][pos2[0]] = 1;
					}
					else{
						c1 = j;
					}
				}
				pre = j;
			}
			if(pos2.size()){
				ans[pos2[(int)pos2.size()-1]][stuf[pre][0]] = 1;
				ans[stuf[pre][0]][pos2[(int)pos2.size()-1]] = 1;
			}
			else if(c1 != pre){
				ans[stuf[c1][0]][stuf[pre][0]] = 1;
				ans[stuf[pre][0]][stuf[c1][0]] = 1;
			}
			/*
			for(int j=0;j<(int)pos3.size() - 1;j++){
				ans[pos3[j]][pos3[j+1]] = 1;
				ans[pos3[j+1]][pos3[j]] = 1;
			}
			if(!pos2.empty()){
				ans[pos3[0]][pos2[0]] = 1;
				ans[pos2[0]][pos3[0]] = 1;
				ans[pos3[0]][pos2[(int)pos2.size()-1]] = 1;
				ans[pos2[(int)pos2.size()-1]][pos3[0]] = 1;
			}
			*/
		}
		for(int j=0;j<n;j++)par2[j] = j;
	}
	
	build(ans);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 324 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 8 ms 1232 KB Output is correct
7 Correct 183 ms 23964 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 324 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 8 ms 1232 KB Output is correct
7 Correct 183 ms 23964 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 172 ms 23952 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 4 ms 820 KB Output is correct
17 Correct 87 ms 14104 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 42 ms 6220 KB Output is correct
21 Correct 178 ms 24008 KB Output is correct
22 Correct 168 ms 23964 KB Output is correct
23 Correct 200 ms 24080 KB Output is correct
24 Correct 163 ms 23940 KB Output is correct
25 Correct 70 ms 14028 KB Output is correct
26 Correct 68 ms 14092 KB Output is correct
27 Correct 193 ms 23956 KB Output is correct
28 Correct 166 ms 24024 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 8 ms 1236 KB Output is correct
9 Correct 166 ms 24092 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 177 ms 24000 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 89 ms 14096 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 43 ms 6252 KB Output is correct
22 Correct 178 ms 23968 KB Output is correct
23 Correct 179 ms 23948 KB Output is correct
24 Correct 192 ms 24012 KB Output is correct
25 Correct 73 ms 14028 KB Output is correct
26 Correct 68 ms 14112 KB Output is correct
27 Correct 169 ms 23948 KB Output is correct
28 Correct 189 ms 24048 KB Output is correct
29 Correct 69 ms 14108 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 46 ms 6288 KB Output is correct
5 Correct 183 ms 23964 KB Output is correct
6 Correct 168 ms 24048 KB Output is correct
7 Correct 188 ms 23956 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 51 ms 6252 KB Output is correct
10 Correct 177 ms 23952 KB Output is correct
11 Correct 167 ms 24012 KB Output is correct
12 Correct 194 ms 23952 KB Output is correct
13 Correct 0 ms 324 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 45 ms 6184 KB Output is correct
17 Correct 174 ms 23960 KB Output is correct
18 Correct 173 ms 24012 KB Output is correct
19 Correct 173 ms 23952 KB Output is correct
20 Correct 162 ms 23952 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 324 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 8 ms 1232 KB Output is correct
7 Correct 183 ms 23964 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 172 ms 23952 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 4 ms 820 KB Output is correct
17 Correct 87 ms 14104 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 42 ms 6220 KB Output is correct
21 Correct 178 ms 24008 KB Output is correct
22 Correct 168 ms 23964 KB Output is correct
23 Correct 200 ms 24080 KB Output is correct
24 Correct 163 ms 23940 KB Output is correct
25 Correct 70 ms 14028 KB Output is correct
26 Correct 68 ms 14092 KB Output is correct
27 Correct 193 ms 23956 KB Output is correct
28 Correct 166 ms 24024 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 8 ms 1236 KB Output is correct
37 Correct 166 ms 24092 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 8 ms 1236 KB Output is correct
41 Correct 177 ms 24000 KB Output is correct
42 Correct 0 ms 340 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 852 KB Output is correct
45 Correct 89 ms 14096 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 43 ms 6252 KB Output is correct
50 Correct 178 ms 23968 KB Output is correct
51 Correct 179 ms 23948 KB Output is correct
52 Correct 192 ms 24012 KB Output is correct
53 Correct 73 ms 14028 KB Output is correct
54 Correct 68 ms 14112 KB Output is correct
55 Correct 169 ms 23948 KB Output is correct
56 Correct 189 ms 24048 KB Output is correct
57 Correct 69 ms 14108 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 4 ms 856 KB Output is correct
61 Correct 90 ms 14096 KB Output is correct
62 Correct 0 ms 212 KB Output is correct
63 Correct 1 ms 212 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 43 ms 6220 KB Output is correct
66 Correct 69 ms 14096 KB Output is correct
67 Correct 72 ms 14096 KB Output is correct
68 Correct 65 ms 14092 KB Output is correct
69 Correct 68 ms 14028 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 324 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 8 ms 1232 KB Output is correct
7 Correct 183 ms 23964 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 172 ms 23952 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 4 ms 820 KB Output is correct
17 Correct 87 ms 14104 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 42 ms 6220 KB Output is correct
21 Correct 178 ms 24008 KB Output is correct
22 Correct 168 ms 23964 KB Output is correct
23 Correct 200 ms 24080 KB Output is correct
24 Correct 163 ms 23940 KB Output is correct
25 Correct 70 ms 14028 KB Output is correct
26 Correct 68 ms 14092 KB Output is correct
27 Correct 193 ms 23956 KB Output is correct
28 Correct 166 ms 24024 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 8 ms 1236 KB Output is correct
37 Correct 166 ms 24092 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 8 ms 1236 KB Output is correct
41 Correct 177 ms 24000 KB Output is correct
42 Correct 0 ms 340 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 852 KB Output is correct
45 Correct 89 ms 14096 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 43 ms 6252 KB Output is correct
50 Correct 178 ms 23968 KB Output is correct
51 Correct 179 ms 23948 KB Output is correct
52 Correct 192 ms 24012 KB Output is correct
53 Correct 73 ms 14028 KB Output is correct
54 Correct 68 ms 14112 KB Output is correct
55 Correct 169 ms 23948 KB Output is correct
56 Correct 189 ms 24048 KB Output is correct
57 Correct 69 ms 14108 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 46 ms 6288 KB Output is correct
62 Correct 183 ms 23964 KB Output is correct
63 Correct 168 ms 24048 KB Output is correct
64 Correct 188 ms 23956 KB Output is correct
65 Correct 1 ms 212 KB Output is correct
66 Correct 51 ms 6252 KB Output is correct
67 Correct 177 ms 23952 KB Output is correct
68 Correct 167 ms 24012 KB Output is correct
69 Correct 194 ms 23952 KB Output is correct
70 Correct 0 ms 324 KB Output is correct
71 Correct 1 ms 212 KB Output is correct
72 Correct 1 ms 328 KB Output is correct
73 Correct 45 ms 6184 KB Output is correct
74 Correct 174 ms 23960 KB Output is correct
75 Correct 173 ms 24012 KB Output is correct
76 Correct 173 ms 23952 KB Output is correct
77 Correct 162 ms 23952 KB Output is correct
78 Correct 0 ms 212 KB Output is correct
79 Correct 0 ms 340 KB Output is correct
80 Correct 4 ms 856 KB Output is correct
81 Correct 90 ms 14096 KB Output is correct
82 Correct 0 ms 212 KB Output is correct
83 Correct 1 ms 212 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 43 ms 6220 KB Output is correct
86 Correct 69 ms 14096 KB Output is correct
87 Correct 72 ms 14096 KB Output is correct
88 Correct 65 ms 14092 KB Output is correct
89 Correct 68 ms 14028 KB Output is correct
90 Correct 0 ms 332 KB Output is correct
91 Correct 1 ms 328 KB Output is correct
92 Correct 4 ms 852 KB Output is correct
93 Correct 96 ms 14100 KB Output is correct
94 Correct 1 ms 212 KB Output is correct
95 Correct 1 ms 328 KB Output is correct
96 Correct 1 ms 212 KB Output is correct
97 Correct 17 ms 3804 KB Output is correct
98 Correct 68 ms 14104 KB Output is correct
99 Correct 66 ms 14100 KB Output is correct
100 Correct 72 ms 14104 KB Output is correct
101 Correct 67 ms 14096 KB Output is correct
102 Correct 76 ms 14108 KB Output is correct
103 Correct 76 ms 14028 KB Output is correct
104 Correct 93 ms 14092 KB Output is correct
105 Correct 80 ms 14092 KB Output is correct