Submission #779420

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
779420	2023-07-11T11:45:29 Z	andrej246	Connecting Supertrees (IOI20_supertrees)	C++14	21 / 100	164 ms	22144 KB

supertrees

#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

#define FOR(i,N) for(long long i = 0; (i) < (N); (i)++)
#define FORS(i,v,N) for(long long i = v; (i) < (N); (i)++)
#define FORI(i,v,N,inc) for(long long i = v; (i) < (N); (i)+=(inc))

#define NL '\n'
#define EL cout << NL

#define PRINTV(v) for(auto a:(v)) {cout << a << " ";};EL
#define PRINTVV(v) for(auto a:(v)) {PRINTV(a);}

typedef long long ll;
typedef vector<ll> VL;
typedef vector<VL> VLL;
typedef pair<ll,ll> PL;
typedef vector<PL> VPL;
typedef vector<VPL> VVPL;

int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	std::vector<std::vector<int>> answer;
	for (int i = 0; i < n; i++) {
		std::vector<int> row;
		row.resize(n);
		answer.push_back(row);
	}
	vector<bool> visited(n,0);
	FOR(s,n) {
		if (!visited[s]) {
			vector<int> branch;
			vector<int> cycle;
			vector<int> comp;
			vector<bool> incycle(n,false);
			vector<int> adress(n,-1);
			stack<pair<int,int>> st;
			int bnum = 0;
			st.push({s,0});
			while(!st.empty()) {
				int u = st.top().first;
				int t = st.top().second;
				st.pop();
				if (visited[u]) continue;
				//cout << u << " " << t << NL;
				visited[u] = true;
				bool is_cycle = true;
				int inc = 0;
				FOR(v,n) {
					if (v == u) continue;
					if (p[u][v] >= 1) {
                        is_cycle = is_cycle && (p[u][v] == 2);
						int type = 0;
						inc++;
						if (p[u][v] == 1) {
                            if (adress[v] > 0 && adress[v] < t) type = t = adress[v];
                            if (t > 0) type = t;
							else if (adress[v] > 0) type = t = adress[v];
							else t = type = ++bnum;
						}
						st.push({v,type});
					}
				}
				if (inc == 0) {
					t = ++bnum;
				}
				is_cycle = (t == 0);
				if (is_cycle)  {
					cycle.push_back(u);
					incycle[u] = true;
				}
				else branch.push_back(u);
				adress[u] = t;
				comp.push_back(u);
			}
			//PRINTV(branch);
			//PRINTV(cycle);
			//PRINTV(adress);
			//PRINTV(incycle);
			for (auto u: comp) {
				for (auto v: comp) {
					int expected = 2;
					if (u == v) expected = 1;
					if ((adress[u] == adress[v]) && (adress[u] != 0)) expected = 1;
					//cout << expected << ":" << p[u][v] << " ";
					if (expected != p[u][v]) return 0;
				}
				//EL;
			}
			//PRINTV(cycle);
			if (cycle.size() >= 1 && cycle.size() + bnum-1 <= 3) return 0;
			int prev_u = -1;
			for(auto u: branch) {
				if (prev_u >= 0) {
                    answer[u][prev_u] = answer[prev_u][u] = 1;
				}
				prev_u = u;
			}
			int prev_v = prev_u;
			int first_c  = prev_u;
			for (auto v: cycle) {
				if (prev_v >= 0) answer[v][prev_v] = answer[prev_v][v] = 1;
				prev_v = v;
				if (first_c == -1) first_c = v;
			}
			if (prev_v != first_c) answer[first_c][prev_v] = answer[prev_v][first_c] = 1;
		}
	}
	build(answer);
	return 1;
}

Subtask #1
11.0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	7 ms	1108 KB	Output is correct
7	Correct	164 ms	22040 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	7 ms	1108 KB	Output is correct
7	Correct	164 ms	22040 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	6 ms	1108 KB	Output is correct
13	Correct	151 ms	22036 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	3 ms	852 KB	Output is correct
17	Correct	75 ms	14216 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	37 ms	5776 KB	Output is correct
21	Correct	154 ms	21968 KB	Output is correct
22	Correct	149 ms	22028 KB	Output is correct
23	Correct	159 ms	22024 KB	Output is correct
24	Correct	150 ms	22024 KB	Output is correct
25	Correct	62 ms	12160 KB	Output is correct
26	Correct	59 ms	12048 KB	Output is correct
27	Correct	157 ms	21976 KB	Output is correct
28	Correct	159 ms	22144 KB	Output is correct

Subtask #3
0 / 19.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 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	Incorrect	0 ms	212 KB	Answer gives possible 0 while actual possible 1
6	Halted	0 ms	0 KB	-

Subtask #4
0 / 35.0

#	Verdict	Memory	Grader output
1	Correct	212 KB	Output is correct
2	Incorrect	212 KB	Answer gives possible 0 while actual possible 1
3	Halted	0 KB	-

Subtask #5
0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	7 ms	1108 KB	Output is correct
7	Correct	164 ms	22040 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	6 ms	1108 KB	Output is correct
13	Correct	151 ms	22036 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	3 ms	852 KB	Output is correct
17	Correct	75 ms	14216 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	37 ms	5776 KB	Output is correct
21	Correct	154 ms	21968 KB	Output is correct
22	Correct	149 ms	22028 KB	Output is correct
23	Correct	159 ms	22024 KB	Output is correct
24	Correct	150 ms	22024 KB	Output is correct
25	Correct	62 ms	12160 KB	Output is correct
26	Correct	59 ms	12048 KB	Output is correct
27	Correct	157 ms	21976 KB	Output is correct
28	Correct	159 ms	22144 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	0 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	Incorrect	0 ms	212 KB	Answer gives possible 0 while actual possible 1
34	Halted	0 ms	0 KB	-

Subtask #6
0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	7 ms	1108 KB	Output is correct
7	Correct	164 ms	22040 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	6 ms	1108 KB	Output is correct
13	Correct	151 ms	22036 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	3 ms	852 KB	Output is correct
17	Correct	75 ms	14216 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	37 ms	5776 KB	Output is correct
21	Correct	154 ms	21968 KB	Output is correct
22	Correct	149 ms	22028 KB	Output is correct
23	Correct	159 ms	22024 KB	Output is correct
24	Correct	150 ms	22024 KB	Output is correct
25	Correct	62 ms	12160 KB	Output is correct
26	Correct	59 ms	12048 KB	Output is correct
27	Correct	157 ms	21976 KB	Output is correct
28	Correct	159 ms	22144 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	0 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	Incorrect	0 ms	212 KB	Answer gives possible 0 while actual possible 1
34	Halted	0 ms	0 KB	-

Submission #779420

Compilation message

Subtask #1 11.0 / 11.0

Subtask #2 10.0 / 10.0

Subtask #3 0 / 19.0

Subtask #4 0 / 35.0

Subtask #5 0 / 21.0

Subtask #6 0 / 4.0

Subtask #1
11.0 / 11.0

Subtask #2
10.0 / 10.0

Subtask #3
0 / 19.0

Subtask #4
0 / 35.0

Subtask #5
0 / 21.0

Subtask #6
0 / 4.0