oj.uz

Submission #309306

# Submission time Handle Problem Language Result Execution time Memory
309306 2020-10-03T07:24:55 Z silverfish Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 269 ms 22304 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;

/*<DEBUG>*/
#define tem template <typename 
#define can_shift(_X_, ...) enable_if_t<sizeof test<_X_>(0) __VA_ARGS__ 8, debug&> operator<<(T i)
#define _op debug& operator<<
tem C > auto test(C *x) -> decltype(cerr << *x, 0LL);
tem C > char test(...);
tem C > struct itr{C begin, end; };
tem C > itr<C> get_range(C b, C e) { return itr<C>{b, e}; };
struct debug{
#ifdef _LOCAL
	~debug(){ cerr << endl; }
	tem T > can_shift(T, ==){ cerr << boolalpha << i; return *this; }
	tem T> can_shift(T, !=){ return *this << get_range(begin(i), end(i)); }
	tem T, typename U > _op (pair<T, U> i){ 
		return *this << "< " << i.first << " , " << i.second << " >"; }
	tem T> _op (itr<T> i){
		*this <<  "{ ";
		for(auto it = i.begin; it != i.end; it++){
			*this << " , " + (it==i.begin?2:0) << *it;
		}
		return *this << " }";
	}
#else
tem T> _op (const T&) { return *this; }
#endif 
};

string _ARR_(int* arr, int sz){
	string ret = "{ " + to_string(arr[0]); 
	for(int i = 1; i < sz; i++) ret += " , " +  to_string(arr[i]);
	ret += " }"; return ret;
}

#define exp(...) " [ " << #__VA_ARGS__ << " : " << (__VA_ARGS__) << " ]"
/*</DEBUG>*/

typedef long long ll;
typedef unsigned long long ull;
typedef unsigned int uint;
typedef pair<int, int> pii;

#define pb push_back
#define FAST ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define TC int __TC__; cin >> __TC__; while(__TC__--)

const int INF = 1e9 + 7;

struct DSU{
	vector<int> p;
	//vector<int> sz;
	//int cnt;

	void init(int n){
		//cnt = 0;
		p.resize(n);
		//sz.assign(n, 1);
		iota(p.begin(), p.end(), 0);
		return;
	}

	int findSet(int a){ return p[a] = (p[a] == a ? a : findSet(p[a])); }

	bool sameSet(int a, int b){ return findSet(a) == findSet(b);}

	void unionSets(int a, int b){
		a = findSet(a);
		b = findSet(b);
		if(a == b) return;
		p[a] = b;
		return;
	}
};

int construct(vector<vector<int>> p) {
	int n = (int)p.size();
	vector<vector<int>> sets(n, vector<int>());
	{
		DSU dsu;
		dsu.init(n);

		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]){
					dsu.unionSets(i, j);
				}
			}
		}

		for(int i = 0; i < n; i++){
			for(int j = 0; j < n; j++){
				if(!p[i][j] && dsu.sameSet(i, j)){
					return 0;
				}
			}
		}

		for(int i = 0;  i < n; i++){
			sets[dsu.findSet(i)].pb(i);
		}
	}

	debug() << exp(sets);

	vector<vector<int>> answer(n, vector<int>(n, 0));

	for(auto v : sets){
		int sz = (int)v.size();
		DSU dsu;
		dsu.init(n);
		for(int i : v){
			for(int j : v){
				if(p[i][j] == 1) dsu.unionSets(i, j);
			}
		}

		for(int i : v){
			for(int j : v){
				if(p[i][j] == 2 && dsu.sameSet(i, j)) return 0;
			}
		}

		map<int, vector<int>> trees;
		for(int i : v){
			trees[dsu.findSet(i)].pb(i);
		}

		vector<int> roots;
		for(auto m : trees){
			roots.pb(m.first);
			for(int i = 0; i < (int)m.second.size()-1; i++){
				answer[m.second[i]][m.second[i+1]] = 1;
				answer[m.second[i+1]][m.second[i]] = 1;
			}
		}

		sz = (int)roots.size();
		if(sz == 0 || sz == 1) continue;
		if(sz < 3) return 0;

		for(int i = 0; i < sz-1; i++){
			answer[roots[i]][roots[i+1]] = 1;
			answer[roots[i+1]][roots[i]] = 1;
		}
		answer[roots[0]][roots[sz-1]] = 1;
		answer[roots[sz-1]][roots[0]] = 1;
	}

	build(answer);
	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 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 13 ms 1152 KB Output is correct
7 Correct 254 ms 22096 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 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 13 ms 1152 KB Output is correct
7 Correct 254 ms 22096 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 239 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 5 ms 640 KB Output is correct
17 Correct 110 ms 8184 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 65 ms 5880 KB Output is correct
21 Correct 247 ms 22136 KB Output is correct
22 Correct 248 ms 22264 KB Output is correct
23 Correct 255 ms 22136 KB Output is correct
24 Correct 243 ms 22136 KB Output is correct
25 Correct 95 ms 8184 KB Output is correct
26 Correct 91 ms 8312 KB Output is correct
27 Correct 256 ms 22136 KB Output is correct
28 Correct 237 ms 22136 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 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 0 ms 256 KB Output is correct
8 Correct 10 ms 1152 KB Output is correct
9 Correct 236 ms 22136 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 11 ms 1152 KB Output is correct
13 Correct 247 ms 22136 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 5 ms 640 KB Output is correct
17 Correct 111 ms 8184 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 1 ms 256 KB Output is correct
21 Correct 65 ms 5880 KB Output is correct
22 Correct 247 ms 22264 KB Output is correct
23 Correct 244 ms 22136 KB Output is correct
24 Correct 254 ms 22264 KB Output is correct
25 Correct 98 ms 12152 KB Output is correct
26 Correct 95 ms 8184 KB Output is correct
27 Correct 251 ms 22112 KB Output is correct
28 Correct 258 ms 22136 KB Output is correct
29 Correct 100 ms 12152 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 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 62 ms 5880 KB Output is correct
5 Correct 247 ms 22264 KB Output is correct
6 Correct 241 ms 22136 KB Output is correct
7 Correct 269 ms 22304 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 62 ms 5836 KB Output is correct
10 Correct 246 ms 22136 KB Output is correct
11 Correct 246 ms 22136 KB Output is correct
12 Correct 256 ms 22136 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 64 ms 5880 KB Output is correct
17 Correct 252 ms 22172 KB Output is correct
18 Correct 248 ms 22136 KB Output is correct
19 Correct 244 ms 22136 KB Output is correct
20 Correct 238 ms 22136 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 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 13 ms 1152 KB Output is correct
7 Correct 254 ms 22096 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 239 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 5 ms 640 KB Output is correct
17 Correct 110 ms 8184 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 65 ms 5880 KB Output is correct
21 Correct 247 ms 22136 KB Output is correct
22 Correct 248 ms 22264 KB Output is correct
23 Correct 255 ms 22136 KB Output is correct
24 Correct 243 ms 22136 KB Output is correct
25 Correct 95 ms 8184 KB Output is correct
26 Correct 91 ms 8312 KB Output is correct
27 Correct 256 ms 22136 KB Output is correct
28 Correct 237 ms 22136 KB Output is correct
29 Correct 0 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 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 0 ms 256 KB Output is correct
36 Correct 10 ms 1152 KB Output is correct
37 Correct 236 ms 22136 KB Output is correct
38 Correct 0 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 11 ms 1152 KB Output is correct
41 Correct 247 ms 22136 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 5 ms 640 KB Output is correct
45 Correct 111 ms 8184 KB Output is correct
46 Correct 0 ms 256 KB Output is correct
47 Correct 1 ms 256 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 65 ms 5880 KB Output is correct
50 Correct 247 ms 22264 KB Output is correct
51 Correct 244 ms 22136 KB Output is correct
52 Correct 254 ms 22264 KB Output is correct
53 Correct 98 ms 12152 KB Output is correct
54 Correct 95 ms 8184 KB Output is correct
55 Correct 251 ms 22112 KB Output is correct
56 Correct 258 ms 22136 KB Output is correct
57 Correct 100 ms 12152 KB Output is correct
58 Correct 0 ms 256 KB Output is correct
59 Correct 0 ms 256 KB Output is correct
60 Correct 8 ms 640 KB Output is correct
61 Correct 108 ms 8184 KB Output is correct
62 Correct 0 ms 256 KB Output is correct
63 Correct 0 ms 256 KB Output is correct
64 Correct 0 ms 256 KB Output is correct
65 Correct 63 ms 5880 KB Output is correct
66 Correct 120 ms 8184 KB Output is correct
67 Correct 116 ms 8312 KB Output is correct
68 Correct 96 ms 8276 KB Output is correct
69 Correct 98 ms 12280 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 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 13 ms 1152 KB Output is correct
7 Correct 254 ms 22096 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 239 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 5 ms 640 KB Output is correct
17 Correct 110 ms 8184 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 65 ms 5880 KB Output is correct
21 Correct 247 ms 22136 KB Output is correct
22 Correct 248 ms 22264 KB Output is correct
23 Correct 255 ms 22136 KB Output is correct
24 Correct 243 ms 22136 KB Output is correct
25 Correct 95 ms 8184 KB Output is correct
26 Correct 91 ms 8312 KB Output is correct
27 Correct 256 ms 22136 KB Output is correct
28 Correct 237 ms 22136 KB Output is correct
29 Correct 0 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 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 0 ms 256 KB Output is correct
36 Correct 10 ms 1152 KB Output is correct
37 Correct 236 ms 22136 KB Output is correct
38 Correct 0 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 11 ms 1152 KB Output is correct
41 Correct 247 ms 22136 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 5 ms 640 KB Output is correct
45 Correct 111 ms 8184 KB Output is correct
46 Correct 0 ms 256 KB Output is correct
47 Correct 1 ms 256 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 65 ms 5880 KB Output is correct
50 Correct 247 ms 22264 KB Output is correct
51 Correct 244 ms 22136 KB Output is correct
52 Correct 254 ms 22264 KB Output is correct
53 Correct 98 ms 12152 KB Output is correct
54 Correct 95 ms 8184 KB Output is correct
55 Correct 251 ms 22112 KB Output is correct
56 Correct 258 ms 22136 KB Output is correct
57 Correct 100 ms 12152 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 0 ms 256 KB Output is correct
60 Correct 0 ms 256 KB Output is correct
61 Correct 62 ms 5880 KB Output is correct
62 Correct 247 ms 22264 KB Output is correct
63 Correct 241 ms 22136 KB Output is correct
64 Correct 269 ms 22304 KB Output is correct
65 Correct 1 ms 384 KB Output is correct
66 Correct 62 ms 5836 KB Output is correct
67 Correct 246 ms 22136 KB Output is correct
68 Correct 246 ms 22136 KB Output is correct
69 Correct 256 ms 22136 KB Output is correct
70 Correct 1 ms 256 KB Output is correct
71 Correct 0 ms 256 KB Output is correct
72 Correct 0 ms 256 KB Output is correct
73 Correct 64 ms 5880 KB Output is correct
74 Correct 252 ms 22172 KB Output is correct
75 Correct 248 ms 22136 KB Output is correct
76 Correct 244 ms 22136 KB Output is correct
77 Correct 238 ms 22136 KB Output is correct
78 Correct 0 ms 256 KB Output is correct
79 Correct 0 ms 256 KB Output is correct
80 Correct 8 ms 640 KB Output is correct
81 Correct 108 ms 8184 KB Output is correct
82 Correct 0 ms 256 KB Output is correct
83 Correct 0 ms 256 KB Output is correct
84 Correct 0 ms 256 KB Output is correct
85 Correct 63 ms 5880 KB Output is correct
86 Correct 120 ms 8184 KB Output is correct
87 Correct 116 ms 8312 KB Output is correct
88 Correct 96 ms 8276 KB Output is correct
89 Correct 98 ms 12280 KB Output is correct
90 Correct 1 ms 256 KB Output is correct
91 Correct 1 ms 256 KB Output is correct
92 Correct 4 ms 640 KB Output is correct
93 Correct 99 ms 8312 KB Output is correct
94 Correct 1 ms 256 KB Output is correct
95 Correct 0 ms 256 KB Output is correct
96 Correct 0 ms 256 KB Output is correct
97 Correct 23 ms 2296 KB Output is correct
98 Correct 112 ms 8312 KB Output is correct
99 Correct 107 ms 8348 KB Output is correct
100 Correct 93 ms 8184 KB Output is correct
101 Correct 91 ms 8184 KB Output is correct
102 Correct 92 ms 8184 KB Output is correct
103 Correct 94 ms 8184 KB Output is correct
104 Correct 94 ms 8312 KB Output is correct
105 Correct 107 ms 8188 KB Output is correct