| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 899168 | 2024-01-05T14:32:55 Z | oblantis | Connecting Supertrees (IOI20_supertrees) | C++17 | 0 ms | 0 KB |
//#include "supertrees.h"
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define all(v) v.begin(), v.end()
#define pb push_back
#define ss second
#define ff first
#define vt vector
using namespace std;
//using namespace __gnu_pbds;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<double, int> pdi;
const ll inf = 1e18;
const int mod = 1e9+7;
const int maxn = 1000 + 1;
vector<int> g[maxn];
int x;
int h[maxn];
bool was[maxn], used[maxn];
void dfs(int v){
h[v] = x;
was[v] = 1;
for(auto i : g[v]){
if(!was[i]){
dfs(i);
}
}
}
int construct(vector<vector<int>> p) {
int n = p.size();
vector<vector<int>> ans(n);
for(int i = 0; i < n; i++){
ans[i].resize(n);
}
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
if(i == j){
if(!p[i][i])return 0;
continue;
}
if(p[i][j]){
g[i].pb(j);
}
if(p[i][j] != p[j][i]){
return 0;
}
}
}
for(int i = 0; i < n; i++){
if(!was[i]){
x = i;
dfs(i);
}
}
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
if(h[i] == h[j] && p[i][j] == 0){
return 0;
}
}
}
for(int i = 0; i < n; i++){
if(!used[i]){
int nxt = i;
for(int j = 0; j < n; j++){
if(p[i][j] == 1){
}
}
}
}
build(ans);
return 1;
}
void solve() {
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
int times = 1;
//cin >> times;
for(int i = 1; i <= times; i++) {
solve();
}
return 0;
}