oj.uz

Submission #714809

# Submission time Handle Problem Language Result Execution time Memory
714809 2023-03-25T09:50:44 Z Nelt Stranded Far From Home (BOI22_island) C++17
10 / 100
 1000 ms 108412 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] = (sub[v] >= a[par]) and ans[par];
    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()
{
    ans[0] = 1;
    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 290 ms 5128 KB Output is correct
5 Correct 309 ms 5112 KB Output is correct
6 Correct 454 ms 5120 KB Output is correct
7 Correct 300 ms 5120 KB Output is correct
8 Correct 214 ms 5104 KB Output is correct
9 Correct 451 ms 5172 KB Output is correct
10 Correct 154 ms 5096 KB Output is correct
11 Correct 144 ms 5096 KB Output is correct
12 Correct 159 ms 5116 KB Output is correct
13 Correct 263 ms 5196 KB Output is correct
14 Correct 165 ms 5108 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 3 ms 4948 KB Output is correct
3 Incorrect 191 ms 28628 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Incorrect 192 ms 42480 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Execution timed out 1091 ms 108412 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 290 ms 5128 KB Output is correct
5 Correct 309 ms 5112 KB Output is correct
6 Correct 454 ms 5120 KB Output is correct
7 Correct 300 ms 5120 KB Output is correct
8 Correct 214 ms 5104 KB Output is correct
9 Correct 451 ms 5172 KB Output is correct
10 Correct 154 ms 5096 KB Output is correct
11 Correct 144 ms 5096 KB Output is correct
12 Correct 159 ms 5116 KB Output is correct
13 Correct 263 ms 5196 KB Output is correct
14 Correct 165 ms 5108 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Incorrect 191 ms 28628 KB Output isn't correct
18 Halted 0 ms 0 KB -