oj.uz

Submission #723134

# Submission time Handle Problem Language Result Execution time Memory
723134 2023-04-13T09:05:36 Z MurotY Stranded Far From Home (BOI22_island) C++14
10 / 100
 493 ms 41776 KB 
#pragma GCC optimize("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("avx,avx2")
#include <bits/stdc++.h>
#define ios ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define ll long long
#define ull unsigned long long
#define ff first
#define ss second
#define all(a) a.begin(), a.end()
#define sz size()
using namespace std;
const double pi = 2 * acos(0.0);
const ll N=1e6+7, M=998244353;
vector <ll> g[N];
ll a[N], res[N];
bool u[N];
ll sum[N], ans[N];
ll dfs(int v){
    sum[v]=a[v];
    u[v]=1;
    for (auto l:g[v]){
        if (!u[l]){
            sum[v]+=dfs(l);
        }
    }
    return sum[v];
}

void dfs1(int v, int p){
    if (sum[v] >= a[p] && ans[p] == 1) ans[v]=1;
    u[v]=1;
    for (auto l:g[v]){
        if (!u[l]){
            dfs1(l, v);
        }
    }
    return ;
}
void solve()
{
	int n, m;
	cin >> n >> m;
	
	for (int i=1;i<=n;i++) cin >> a[i];
	for (int i=1;i<=m;i++){
		int x, y;
		cin >> x >> y;
		g[x].push_back(y);
		g[y].push_back(x);
	}
    if (n <= 2000 && m <= 2000){
		for (int i=1;i<=n;i++){
			set <pair <ll, ll>> q;
			vector <int> u(n+5, 0);
			q.insert({0, i});
			ll sum=0, cnt=0;
			while (!q.empty()){
			    pair <ll,ll> mn=*q.begin();
			    if (sum < mn.ff) break;
			    if (u[mn.ss]) continue;
			    u[mn.ss]=1;
			    q.erase(mn);
			    sum+=a[mn.ss];
			    for (auto l:g[mn.ss]){
			        if (!u[l]) {
			            q.insert({a[l], l});
			        }
			    }
			}
			if (q.sz == 0) cout << "1";
			else cout << "0";
		}
		return ;
    }
    ans[1]=1;
    dfs(1);
    fill(u, u+n+5, 0);
    dfs1(1, 0);
    for (int i=1;i<=n;i++) cout << ans[i] << " ";
    return;
}
int main(){
	ios;
	int t=1;	
//	cin >> t;
	while (t--){ 
	    solve();
	    cout << "\n";
	}
	return 0;
}

Compilation message

island.cpp: In function 'void solve()':
island.cpp:57:14: warning: unused variable 'cnt' [-Wunused-variable]
   57 |    ll sum=0, cnt=0;
      |              ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23764 KB Output is correct
2 Correct 14 ms 23764 KB Output is correct
3 Correct 14 ms 23752 KB Output is correct
4 Correct 294 ms 23912 KB Output is correct
5 Correct 270 ms 23892 KB Output is correct
6 Correct 438 ms 23904 KB Output is correct
7 Correct 305 ms 23908 KB Output is correct
8 Correct 230 ms 23904 KB Output is correct
9 Correct 493 ms 23968 KB Output is correct
10 Correct 125 ms 23892 KB Output is correct
11 Correct 118 ms 23892 KB Output is correct
12 Correct 157 ms 23912 KB Output is correct
13 Correct 255 ms 23892 KB Output is correct
14 Correct 168 ms 24012 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 14 ms 23700 KB Output is correct
3 Incorrect 177 ms 38992 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23812 KB Output is correct
2 Incorrect 172 ms 41776 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23764 KB Output is correct
2 Incorrect 187 ms 36760 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23764 KB Output is correct
2 Correct 14 ms 23764 KB Output is correct
3 Correct 14 ms 23752 KB Output is correct
4 Correct 294 ms 23912 KB Output is correct
5 Correct 270 ms 23892 KB Output is correct
6 Correct 438 ms 23904 KB Output is correct
7 Correct 305 ms 23908 KB Output is correct
8 Correct 230 ms 23904 KB Output is correct
9 Correct 493 ms 23968 KB Output is correct
10 Correct 125 ms 23892 KB Output is correct
11 Correct 118 ms 23892 KB Output is correct
12 Correct 157 ms 23912 KB Output is correct
13 Correct 255 ms 23892 KB Output is correct
14 Correct 168 ms 24012 KB Output is correct
15 Correct 13 ms 23764 KB Output is correct
16 Correct 14 ms 23700 KB Output is correct
17 Incorrect 177 ms 38992 KB Output isn't correct
18 Halted 0 ms 0 KB -