//author : FatihCihan
#include <bits/stdc++.h>
using namespace std;
#define all(v) v.begin() , v.end()
#define sz(a) (int)a.size()
const int N = 2e5 + 7;
const int inf = 1e9 + 7;
int n,m,s[N],ans[N],mem_value[N],mem_par[N],tar[N];
vector < int > graph[N] , adj[N];
int par[N] , value[N] , mx[N];
int find(int a){
if(par[a] == a)return a;
else return par[a] = find(par[a]);
}
void merge(int a , int b){
a = find(a) , b = find(b);
if(a == b)return;
value[b] += value[a];
par[a] = b;
if(s[mx[a]] > s[mx[b]])mx[b] = mx[a];
}
void solve(){
cin >> n >> m;
pair < int , int > village[n];
vector < int > compr;
for(int i = 1;i<=n;i++){
cin >> s[i];
village[i-1] = {s[i] , i};
tar[i] = inf;
par[i] = mx[i] = i , value[i] = s[i];
compr.push_back(s[i]);
}
sort(all(compr));
compr.resize(unique(all(compr)) - compr.begin());
sort(village , village + n);
for(int i = 0;i<m;i++){
int ai,bi;
cin >> ai >> bi;
graph[ai].push_back(bi);
graph[bi].push_back(ai);
}
int lp = 0;
for(auto si : compr){
// cout << " SI : " << si << endl;
vector < int > v;
while(lp < n and s[village[lp].second] <= si){
v.push_back(village[lp].second);
lp++;
}
vector < pair < int , int > > gh;
for(auto node : v){
for(auto itr : graph[node]){
if(s[itr] < s[node]){
gh.push_back({node , mx[find(itr)]});
}
}
}
for(auto node : v){
for(auto itr : graph[node]){
if(s[itr] <= s[node]){
merge(itr , node);
}
}
}
for(auto itr : gh){
adj[find(itr.first)].push_back(itr.second);
}
for(auto node : v){
mem_value[node] = value[find(node)];
mem_par[node] = find(node);
// cout << node << " : " << mem_value[node] << " , " << mem_par[node] << endl;
}
}
// cout << " ENDED" << endl;
for(int i = 1;i<=n;i++){
sort(all(adj[i]));
adj[i].resize(unique(all(adj[i])) - adj[i].begin());
}
int mx_s = village[n-1].first;
for(int i = 1;i<=n;i++){
if(s[i] == mx_s){
tar[i] = 0;
}
}
for(int i = n-1;i>=0;i--){
// cout << "equal : " << village[i].second << " " << mem_par[village[i].second] << endl;
// cout << "values : " << tar[village[i].second] << " " << mem_value[village[i].second] << endl;
// cout << endl;
if(mem_par[village[i].second] != village[i].second)continue;
else if(tar[village[i].second] <= mem_value[village[i].second]){
ans[village[i].second] = 1;
// cout << "adj " << village[i].second << " : ";
for(auto itr : adj[village[i].second]){
// cout << itr << " ";
tar[itr] = min(tar[itr] , s[village[i].second]);
}
// cout << endl;
}
else{
ans[village[i].second] = 0;
}
}
for(int i = 1;i<=n;i++){
cout << ans[mem_par[i]];
}
cout << endl;
}
signed main(){
ios_base::sync_with_stdio(0);cin.tie(0);
int testcase = 1;//cin >> testcase;
while(testcase--)solve();
// cerr << 1000.0 * clock() / CLOCKS_PER_SEC << " ms" << endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
14780 KB |
Output is correct |
| 2 |
Correct |
3 ms |
14684 KB |
Output is correct |
| 3 |
Correct |
3 ms |
14684 KB |
Output is correct |
| 4 |
Incorrect |
5 ms |
14936 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
14684 KB |
Output is correct |
| 2 |
Correct |
4 ms |
14684 KB |
Output is correct |
| 3 |
Incorrect |
109 ms |
29072 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
14680 KB |
Output is correct |
| 2 |
Incorrect |
174 ms |
28880 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
14680 KB |
Output is correct |
| 2 |
Incorrect |
146 ms |
27856 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
14780 KB |
Output is correct |
| 2 |
Correct |
3 ms |
14684 KB |
Output is correct |
| 3 |
Correct |
3 ms |
14684 KB |
Output is correct |
| 4 |
Incorrect |
5 ms |
14936 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
