oj.uz

답안 #714801

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
714801 2023-03-25T09:45:32 Z Nelt Stranded Far From Home (BOI22_island) C++17
10 / 100
 1000 ms 101716 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[v]) == 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

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 301 ms 5120 KB Output is correct
5 Correct 285 ms 5076 KB Output is correct
6 Correct 433 ms 5120 KB Output is correct
7 Correct 282 ms 5116 KB Output is correct
8 Correct 214 ms 5076 KB Output is correct
9 Correct 445 ms 5172 KB Output is correct
10 Correct 149 ms 5104 KB Output is correct
11 Correct 143 ms 5108 KB Output is correct
12 Correct 154 ms 5120 KB Output is correct
13 Correct 257 ms 5096 KB Output is correct
14 Correct 162 ms 5108 KB Output is correct

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Incorrect 197 ms 28676 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Incorrect 184 ms 42496 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Execution timed out 1094 ms 101716 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 301 ms 5120 KB Output is correct
5 Correct 285 ms 5076 KB Output is correct
6 Correct 433 ms 5120 KB Output is correct
7 Correct 282 ms 5116 KB Output is correct
8 Correct 214 ms 5076 KB Output is correct
9 Correct 445 ms 5172 KB Output is correct
10 Correct 149 ms 5104 KB Output is correct
11 Correct 143 ms 5108 KB Output is correct
12 Correct 154 ms 5120 KB Output is correct
13 Correct 257 ms 5096 KB Output is correct
14 Correct 162 ms 5108 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Incorrect 197 ms 28676 KB Output isn't correct
18 Halted 0 ms 0 KB -