oj.uz

Submission #714804

# Submission time Handle Problem Language Result Execution time Memory
714804 2023-03-25T09:47:44 Z Nelt Stranded Far From Home (BOI22_island) C++17
10 / 100
 1000 ms 100400 KB 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,avx2,fma")

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

/* DEFINES */
#define F first
#define S second
#define ll long long
#define ull unsigned long long
#define ld long double
#define npos ULLONG_MAX
#define INF LLONG_MAX
#define vv(a) vector<a>
#define pp(a, b) pair<a, b>
#define pq(a) priority_queue<a>
#define qq(a) queue<a>
#define ss(a) set<a>
#define mm(a, b) map<a, b>
#define ump(a, b) unordered_map<a, b>
#define sync                      \
    ios_base::sync_with_stdio(0); \
    cin.tie(0);                   \
    cout.tie(0);
#define elif else if
#define endl "\n"
#define allc(a) begin(a), end(a)
#define all(a) a, a + sizeof(a) / sizeof(a[0])
#define pb push_back
#define logi(a) __lg(a)
#define sqrt(a) sqrtl(a)
#define mpr make_pair
#define ins insert
using namespace std;
using namespace __gnu_pbds;
using namespace __cxx11;
typedef char chr;
typedef basic_string<chr> str;
template <typename T, typename key = less<T>>
using ordered_set = tree<T, null_type, key, rb_tree_tag, tree_order_statistics_node_update>;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
const ll N = 2e5 + 5;
vv(ll) g[N];
ll a[N], sub[N];
ll pref[N], ans[N];
multiset<ll> s;
void dfs(ll v, ll par = 0)
{
    sub[v] = a[v];
    pref[v] = pref[par] + a[v];
    ans[v] = v == 1 or s.upper_bound(sub[v] + pref[par]) == s.end();
    s.ins(a[v] + pref[v]);
    for (ll to : g[v])
        if (to != par)
            dfs(to, v), sub[v] += sub[to];
    s.erase(s.find(a[v] + pref[v]));
}
void solve()
{
    ll n, m;
    cin >> n >> m;
    for (ll i = 1; i <= n; i++)
        cin >> a[i];
    while (m--)
    {
        ll x, y;
        cin >> x >> y;
        g[x].pb(y);
        g[y].pb(x);
    }
    if (n <= 2010)
    {
        ss(pp(ll, ll)) s;
        bool us[n + 1];
        for (ll i = 1; i <= n; i++)
        {
            memset(us, 0, sizeof(us));
            s.clear();
            for (ll j : g[i])
                s.ins(mpr(a[j], j));
            us[i] = 1;
            ll val = a[i];
            while (!s.empty() and s.begin()->F <= val)
            {
                auto tmp = *s.begin();
                us[tmp.S] = 1;
                val += tmp.F;
                for (ll to : g[tmp.S])
                    if (!us[to])
                        s.ins(mpr(a[to], to));
                s.erase(tmp);
            }
            if (count(us + 1, us + n + 1, 0))
                cout << "0";
            else
                cout << "1";
        }
        cout << endl;
        return;
    }
    dfs(1);
    for (ll i = 1; i <= n; i++)
        cout << ans[i];
    cout << endl;
}
/*

*/
int main()
{
    sync
        // precomp();
        ll t = 1;
    // cin >> t;
    for (ll i = 1; i <= t; i++)
        // cout << "Case " << i << ": ",
        solve();
    cerr << "\nTime elapsed : " << clock() * 1000.0 / CLOCKS_PER_SEC << " ms\n";
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 383 ms 5120 KB Output is correct
5 Correct 342 ms 5116 KB Output is correct
6 Correct 481 ms 5116 KB Output is correct
7 Correct 295 ms 5120 KB Output is correct
8 Correct 231 ms 5104 KB Output is correct
9 Correct 469 ms 5172 KB Output is correct
10 Correct 170 ms 5096 KB Output is correct
11 Correct 159 ms 5076 KB Output is correct
12 Correct 176 ms 5076 KB Output is correct
13 Correct 272 ms 5100 KB Output is correct
14 Correct 180 ms 5124 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Incorrect 210 ms 28660 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Incorrect 212 ms 42492 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Execution timed out 1093 ms 100400 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 383 ms 5120 KB Output is correct
5 Correct 342 ms 5116 KB Output is correct
6 Correct 481 ms 5116 KB Output is correct
7 Correct 295 ms 5120 KB Output is correct
8 Correct 231 ms 5104 KB Output is correct
9 Correct 469 ms 5172 KB Output is correct
10 Correct 170 ms 5096 KB Output is correct
11 Correct 159 ms 5076 KB Output is correct
12 Correct 176 ms 5076 KB Output is correct
13 Correct 272 ms 5100 KB Output is correct
14 Correct 180 ms 5124 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Incorrect 210 ms 28660 KB Output isn't correct
18 Halted 0 ms 0 KB -