oj.uz

Submission #779383

# Submission time Handle Problem Language Result Execution time Memory
779383 2023-07-11T11:24:11 Z andrej246 Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 157 ms 22216 KB 
#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;
				FOR(v,n) {
					if (v == u) continue;
					if (p[u][v] >= 1) {
                        is_cycle = is_cycle && (p[u][v] == 2);
						int type = 0;
						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 (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;
					if (expected != p[u][v]) return 0;
				}
			}
			for (auto u: branch) {
				FOR(v,n) {
					if (p[u][v] == 2 && !incycle[v]) {
                        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 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 157 ms 22084 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 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 157 ms 22084 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 6 ms 1184 KB Output is correct
13 Correct 148 ms 22144 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 72 ms 14208 KB Output is correct
18 Correct 1 ms 296 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 38 ms 5892 KB Output is correct
21 Correct 151 ms 22160 KB Output is correct
22 Correct 146 ms 22164 KB Output is correct
23 Correct 156 ms 22112 KB Output is correct
24 Correct 152 ms 22160 KB Output is correct
25 Correct 60 ms 12240 KB Output is correct
26 Correct 68 ms 12272 KB Output is correct
27 Correct 157 ms 22132 KB Output is correct
28 Correct 142 ms 22152 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 1 ms 212 KB Output is correct
4 Incorrect 1 ms 212 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 37 ms 5812 KB Output is correct
5 Correct 151 ms 22140 KB Output is correct
6 Correct 155 ms 22132 KB Output is correct
7 Correct 156 ms 22160 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 38 ms 5800 KB Output is correct
10 Correct 146 ms 22124 KB Output is correct
11 Correct 147 ms 22216 KB Output is correct
12 Correct 157 ms 22132 KB Output is correct
13 Correct 1 ms 304 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Incorrect 15 ms 3340 KB Answer gives possible 0 while actual possible 1
17 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 157 ms 22084 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 6 ms 1184 KB Output is correct
13 Correct 148 ms 22144 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 72 ms 14208 KB Output is correct
18 Correct 1 ms 296 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 38 ms 5892 KB Output is correct
21 Correct 151 ms 22160 KB Output is correct
22 Correct 146 ms 22164 KB Output is correct
23 Correct 156 ms 22112 KB Output is correct
24 Correct 152 ms 22160 KB Output is correct
25 Correct 60 ms 12240 KB Output is correct
26 Correct 68 ms 12272 KB Output is correct
27 Correct 157 ms 22132 KB Output is correct
28 Correct 142 ms 22152 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Incorrect 1 ms 212 KB Answer gives possible 1 while actual possible 0
33 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 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 157 ms 22084 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 6 ms 1184 KB Output is correct
13 Correct 148 ms 22144 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 72 ms 14208 KB Output is correct
18 Correct 1 ms 296 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 38 ms 5892 KB Output is correct
21 Correct 151 ms 22160 KB Output is correct
22 Correct 146 ms 22164 KB Output is correct
23 Correct 156 ms 22112 KB Output is correct
24 Correct 152 ms 22160 KB Output is correct
25 Correct 60 ms 12240 KB Output is correct
26 Correct 68 ms 12272 KB Output is correct
27 Correct 157 ms 22132 KB Output is correct
28 Correct 142 ms 22152 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Incorrect 1 ms 212 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -