oj.uz

Submission #723300

# Submission time Handle Problem Language Result Execution time Memory
723300 2023-04-13T13:59:05 Z MurotY Stranded Far From Home (BOI22_island) C++14
10 / 100
 1000 ms 216248 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];  
ll sum[N], ans[N];
ll dfs(int v, int p){
    sum[v]=a[v];
    for (auto l:g[v]){
        if (l != p){
            sum[v]+=dfs(l, v);
        }
    }
    return sum[v];
}

void dfs1(int v, int p){
    if(v == 1) ans[v] = 1;
    else{
        ans[v] = (sum[v] >= a[p]);
    }
    if(!ans[v]) return;
    for (auto l:g[v]){
        if (l != p){
            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 ;
    }
    dfs(1, 1);
    dfs1(1, 1);
    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:58:14: warning: unused variable 'cnt' [-Wunused-variable]
   58 |    ll sum=0, cnt=0;
      |              ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23816 KB Output is correct
2 Correct 14 ms 23764 KB Output is correct
3 Correct 15 ms 23764 KB Output is correct
4 Correct 297 ms 23980 KB Output is correct
5 Correct 270 ms 23944 KB Output is correct
6 Correct 438 ms 23952 KB Output is correct
7 Correct 294 ms 23892 KB Output is correct
8 Correct 224 ms 23924 KB Output is correct
9 Correct 485 ms 24012 KB Output is correct
10 Correct 129 ms 23892 KB Output is correct
11 Correct 138 ms 23932 KB Output is correct
12 Correct 164 ms 23952 KB Output is correct
13 Correct 247 ms 24012 KB Output is correct
14 Correct 155 ms 23920 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23884 KB Output is correct
2 Correct 15 ms 23764 KB Output is correct
3 Incorrect 189 ms 39724 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23736 KB Output is correct
2 Incorrect 165 ms 42956 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23764 KB Output is correct
2 Execution timed out 1059 ms 216248 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23816 KB Output is correct
2 Correct 14 ms 23764 KB Output is correct
3 Correct 15 ms 23764 KB Output is correct
4 Correct 297 ms 23980 KB Output is correct
5 Correct 270 ms 23944 KB Output is correct
6 Correct 438 ms 23952 KB Output is correct
7 Correct 294 ms 23892 KB Output is correct
8 Correct 224 ms 23924 KB Output is correct
9 Correct 485 ms 24012 KB Output is correct
10 Correct 129 ms 23892 KB Output is correct
11 Correct 138 ms 23932 KB Output is correct
12 Correct 164 ms 23952 KB Output is correct
13 Correct 247 ms 24012 KB Output is correct
14 Correct 155 ms 23920 KB Output is correct
15 Correct 14 ms 23884 KB Output is correct
16 Correct 15 ms 23764 KB Output is correct
17 Incorrect 189 ms 39724 KB Output isn't correct
18 Halted 0 ms 0 KB -