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Submission #479373

# Submission time Handle Problem Language Result Execution time Memory
479373 2021-10-11T13:57:28 Z lacito Friend (IOI14_friend) C++14
23 / 100
 3 ms 332 KB 
#include "friend.h"
#include <bits/stdc++.h>
using namespace std;

vector<vector<int>> g;
vector<int> par;
vector<bool> vis;

bool dfs(int v){
	vis[v] = true;
	for(int u : g[v])
		if(par[u] == -1 || (!vis[par[u]] && dfs(par[u]))) {
			par[v] = u;
			par[u] = v;
			return true;
		}
	return false;
}

// Find out best sample
int findSample(int n,int confidence[],int host[],int protocol[]){
	vector<bool> color(n);
	g.resize(n);
	for (int i = 1; i < n; i++) {
		if (protocol[i] == 0) {
			color[i] = !color[host[i]];
			g[i].push_back(host[i]);
			g[host[i]].push_back(i);
		} else {
			color[i] = color[host[i]];
			for (int u : g[host[i]]) {
				g[i].push_back(u);
				g[u].push_back(i);
			}
		}

	}
	par.assign(n, -1);
	int ans = 0;
	for (int i = 0; i < n; i++) {
		if (color[i]) continue;
		vis.assign(n, false);
		if (dfs(i)) ans++;
	}
	
	return n - ans;
}

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 3 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 2 ms 312 KB Output is correct
21 Correct 1 ms 332 KB Output is correct

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -