oj.uz

Submission #955813

# Submission time Handle Problem Language Result Execution time Memory
955813 2024-03-31T12:47:44 Z n1k Thousands Islands (IOI22_islands) C++17
19.25 / 100
 34 ms 8788 KB 
#include "islands.h"
	
#include <bits/stdc++.h>
	
using namespace std;
	
vector<vector<array<int, 2>>> g, rg;
vector<int> color, par, del, deg;
	
map<int, int> cache;
	
int dfs(int u, int p){
	par[u] = p;
	del[u] = 1;

	int out_deg = 0;
	for(auto [v, e]:g[u]){
		out_deg += 1-del[v];
	}

	if(out_deg>1)
		return 1;

	bool ok = 0;

	for(auto [v, e]:g[u]){
		if(del[v])
			continue;
		ok |= dfs(v, u);
	}

	return ok;
}
	
std::variant<bool, std::vector<int>> find_journey(int N, int M, std::vector<int> U, std::vector<int> V) {
	g.assign(N, {});
	rg.assign(N, {});
	color.assign(N, {});
	par.assign(N, {});
	del.assign(N, {});
	deg.assign(N, {});
	
	for(int i=0; i<M; i++){
		g[U[i]].push_back({V[i], i});
		rg[V[i]].push_back({U[i], i});
	}

	queue<int> q;
	for(int i=0; i<N; i++){
		deg[i]=g[i].size();
		if(deg[i]==0){
			q.push(i);
		}
	}
	while(q.size()){
		auto u = q.front();
		q.pop();
		del[u]=1;
		for(auto [v, e]:rg[u]){
			if(--deg[v]==0){
				q.push(v);
			}
		}
	}

	return dfs(0, -1)==1;

}

Subtask #1
1.75 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Partially correct 0 ms 348 KB Output is partially correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Partially correct 0 ms 348 KB Output is partially correct
7 Partially correct 29 ms 6624 KB Output is partially correct

Subtask #2
1.75 / 5.0

# Verdict Execution time Memory Grader output
1 Partially correct 0 ms 348 KB Output is partially correct
2 Correct 0 ms 348 KB Output is correct
3 Partially correct 0 ms 348 KB Output is partially correct
4 Partially correct 0 ms 348 KB Output is partially correct
5 Partially correct 0 ms 348 KB Output is partially correct
6 Partially correct 30 ms 6484 KB Output is partially correct

Subtask #3
7.35 / 21.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 600 KB Output is partially correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Partially correct 0 ms 348 KB Output is partially correct
5 Correct 1 ms 604 KB Output is correct
6 Partially correct 0 ms 344 KB Output is partially correct
7 Correct 1 ms 348 KB Output is correct
8 Partially correct 0 ms 348 KB Output is partially correct
9 Partially correct 1 ms 348 KB Output is partially correct
10 Partially correct 1 ms 604 KB Output is partially correct
11 Partially correct 0 ms 348 KB Output is partially correct
12 Partially correct 1 ms 604 KB Output is partially correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Partially correct 1 ms 348 KB Output is partially correct
16 Correct 0 ms 348 KB Output is correct
17 Partially correct 17 ms 4188 KB Output is partially correct
18 Partially correct 14 ms 3932 KB Output is partially correct
19 Correct 0 ms 348 KB Output is correct
20 Partially correct 0 ms 348 KB Output is partially correct
21 Partially correct 1 ms 348 KB Output is partially correct
22 Partially correct 0 ms 348 KB Output is partially correct
23 Partially correct 26 ms 6492 KB Output is partially correct

Subtask #4
8.4 / 24.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 348 KB Output is partially correct
2 Partially correct 1 ms 856 KB Output is partially correct
3 Partially correct 28 ms 7256 KB Output is partially correct
4 Partially correct 30 ms 7360 KB Output is partially correct
5 Partially correct 1 ms 604 KB Output is partially correct
6 Partially correct 1 ms 604 KB Output is partially correct
7 Partially correct 0 ms 344 KB Output is partially correct
8 Partially correct 0 ms 348 KB Output is partially correct
9 Partially correct 0 ms 344 KB Output is partially correct
10 Partially correct 1 ms 348 KB Output is partially correct
11 Correct 1 ms 604 KB Output is correct
12 Partially correct 1 ms 460 KB Output is partially correct
13 Partially correct 1 ms 604 KB Output is partially correct
14 Partially correct 1 ms 600 KB Output is partially correct
15 Partially correct 1 ms 604 KB Output is partially correct
16 Partially correct 1 ms 348 KB Output is partially correct
17 Correct 0 ms 344 KB Output is correct
18 Partially correct 1 ms 412 KB Output is partially correct
19 Partially correct 1 ms 348 KB Output is partially correct
20 Correct 31 ms 7764 KB Output is correct
21 Partially correct 30 ms 7508 KB Output is partially correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Partially correct 1 ms 348 KB Output is partially correct
26 Partially correct 1 ms 348 KB Output is partially correct
27 Partially correct 31 ms 7636 KB Output is partially correct
28 Partially correct 31 ms 7772 KB Output is partially correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 34 ms 8788 KB Output is correct
31 Partially correct 0 ms 348 KB Output is partially correct
32 Partially correct 29 ms 7992 KB Output is partially correct
33 Partially correct 30 ms 7304 KB Output is partially correct
34 Partially correct 17 ms 4176 KB Output is partially correct
35 Partially correct 1 ms 344 KB Output is partially correct
36 Partially correct 26 ms 6800 KB Output is partially correct
37 Partially correct 31 ms 8532 KB Output is partially correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 26 ms 7024 KB Output is correct
40 Partially correct 1 ms 548 KB Output is partially correct
41 Correct 33 ms 8784 KB Output is correct
42 Partially correct 31 ms 7764 KB Output is partially correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 1 ms 604 KB Output is correct
45 Partially correct 1 ms 348 KB Output is partially correct
46 Partially correct 14 ms 3676 KB Output is partially correct

Subtask #5
0.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Partially correct 0 ms 348 KB Output is partially correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Partially correct 0 ms 348 KB Output is partially correct
7 Partially correct 29 ms 6624 KB Output is partially correct
8 Partially correct 0 ms 348 KB Output is partially correct
9 Correct 0 ms 348 KB Output is correct
10 Partially correct 0 ms 348 KB Output is partially correct
11 Partially correct 0 ms 348 KB Output is partially correct
12 Partially correct 0 ms 348 KB Output is partially correct
13 Partially correct 30 ms 6484 KB Output is partially correct
14 Partially correct 1 ms 600 KB Output is partially correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Partially correct 0 ms 348 KB Output is partially correct
18 Correct 1 ms 604 KB Output is correct
19 Partially correct 0 ms 344 KB Output is partially correct
20 Correct 1 ms 348 KB Output is correct
21 Partially correct 0 ms 348 KB Output is partially correct
22 Partially correct 1 ms 348 KB Output is partially correct
23 Partially correct 1 ms 604 KB Output is partially correct
24 Partially correct 0 ms 348 KB Output is partially correct
25 Partially correct 1 ms 604 KB Output is partially correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Partially correct 1 ms 348 KB Output is partially correct
29 Correct 0 ms 348 KB Output is correct
30 Partially correct 17 ms 4188 KB Output is partially correct
31 Partially correct 14 ms 3932 KB Output is partially correct
32 Correct 0 ms 348 KB Output is correct
33 Partially correct 0 ms 348 KB Output is partially correct
34 Partially correct 1 ms 348 KB Output is partially correct
35 Partially correct 0 ms 348 KB Output is partially correct
36 Partially correct 26 ms 6492 KB Output is partially correct
37 Partially correct 1 ms 348 KB Output is partially correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 14 ms 3708 KB Output is correct
42 Correct 1 ms 600 KB Output is correct
43 Incorrect 26 ms 8512 KB Output isn't correct
44 Halted 0 ms 0 KB -