# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
857155 |
2023-10-05T13:06:32 Z |
ntkphong |
Friend (IOI14_friend) |
C++14 |
|
1 ms |
600 KB |
#include "friend.h"
#include <bits/stdc++.h>
using namespace std;
const int MAXSIZE = 1e5 + 10;
vector<vector<int>> g;
vector<int> vis, col;
vector<int> match;
void dfs(int u, vector<int> &L, vector<int> &R) {
vis[u] = 1;
if(!col[u]) L.push_back(u);
else R.push_back(u);
for(int v : g[u]) {
if(vis[v]) continue ;
col[v] = col[u] ^ 1;
dfs(v, L, R);
}
}
int DFS(int u) {
if(vis[u]) return 0;
vis[u] = 1;
for(int v : g[u]) {
if(match[v] == -1 || DFS(v)) {
match[v] = u;
return 1;
}
}
return 0;
}
int sub(int n) {
vis.resize(n, 0);
col.resize(n, 0);
match.resize(n, -1);
int total = 0;
for(int i = 0; i < n; i ++) {
if(vis[i]) continue ;
vector<int> L, R;
dfs(i, L, R);
for(int x : R) match[x] = -1;
for(int x : L) {
for(int y : L) {
vis[y] = 0;
}
DFS(x);
}
for(int x : R) total += match[x] != -1;
}
return n - total;
}
int findSample(int n, int confidence[], int host[], int protocol[]){
g.resize(n);
for(int i = 1; i < n; i ++) {
int p = host[i];
if(protocol[i] == 0 || protocol[i] == 2) {
g[i].push_back(p);
g[p].push_back(i);
}
if(protocol[i] == 1 || protocol[i] == 2) {
for(int v : g[p]) {
g[i].push_back(v);
g[v].push_back(i);
}
}
}
return sub(n);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
1 ms |
448 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
444 KB |
Output is correct |
2 |
Correct |
0 ms |
444 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
344 KB |
Output is correct |
5 |
Correct |
1 ms |
516 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
444 KB |
Output is correct |
9 |
Correct |
1 ms |
600 KB |
Output is correct |
10 |
Correct |
1 ms |
448 KB |
Output is correct |
11 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |