oj.uz

Submission #993852

# Submission time Handle Problem Language Result Execution time Memory
993852 2024-06-06T14:21:04 Z Fatonim Joker (BOI20_joker) C++17
36 / 100
 2000 ms 31716 KB 
// "We create our own demons."
#include <bits/stdc++.h>

using namespace std;

#ifdef ONPC
    #include "debug.h"
#else
    #define dbg(...)
#endif

#define int long long
#define ll long long
#define ld long double
#define pi pair<int, int>
// vector
#define sz(a) (int)((a).size())
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define maxel(x) (*max_element(all(x)))
#define minel(x) (*min_element(all(x)))
#define maxpos(x) (max_element(all(x)) - x.begin())
#define minpos(x) (min_element(all(x)) - x.begin())
#define srt(x) (sort(all(x)))
#define rev(x) (reverse(all(x)))
// bitwise operations
#define cnt_bit(n) __builtin_popcountll(n)
#define low_bit(n) ((n) & (-(n)))
#define bit(n, i) (((n) >> (i)) & 1)
#define set_bit(n, i) ((n) | (1LL << (i)))
#define reset_bit(n, i) ((n) & ~(1LL << (i)))
#define flip_bit(n, i) ((n) ^ (1LL << (i)))
// math
#define sqr(n) ((n) * (n))
#define divup(a, b) (((a) + (b)-1) / (b))
// ostream
#define Fixed(a) cout << fixed << setprecision(12) << a;

template <class T> void chmin(T& a, const T& b) { return b < a ? a = b, 1 : 0; }
template <class T> void chmax(T& a, const T& b) { return b > a ? a = b, 1 : 0; }

template <class T> using min_queue = priority_queue<T, vector<T>, greater<T>>;
template <class T> using max_queue = priority_queue<T, vector<T>, less<T>>;

template <class T> using V = vector<T>;
using vi = V<int>;
using vd = V<ld>;
using vb = V<bool>;
using vpi = V<pi>;
using vvi = V<vi>;
using vvb = V<vb>;

const int mod = 1e9 + 7; // 998244353 1e9 + 7
const ll inf = (int)(1e18) + 7;
const int inf_s = 1e9 + 7;
const ld eps = 1e-9;

const int B = 32;
const int N = 1000 + 3;
const int logn = 20;
const int maxn = 4e5 + 7;
/////////////////////////solve/////////////////////////

const int bs = 4500;
const int bc = maxn / bs + 1;

struct query {
    int l, r, i;
};

V<query> b[maxn];
pi e[maxn];
int ans[maxn];

int p[maxn], sz[maxn], len[maxn];
vi hist;

pi get(int a) {
    if (a != p[a]) {
        pi cur = get(p[a]);
        return {cur.first, cur.second ^ len[a]};
    }
    return {a, 0};
}

bool unite(int aa, int bb) {
    auto [a, x] = get(aa);
    auto [b, y] = get(bb);
    if (a == b) {
        dbg(a, b, aa, bb);
        dbg(p[aa], p[bb]);
        return x ^ y ^ 1;
    }
    if (sz[a] > sz[b]) swap(a, b);
    sz[b] += sz[a];
    p[a] = b;
    len[a] = x ^ y ^ 1;
    hist.push_back(a);
    return 0;
}

void rb(int k) {
    while (sz(hist) > k) {
        int a = hist.back();
        hist.pop_back();
        sz[p[a]] -= sz[a];
        p[a] = a;
        len[a] = 0;
    }
}

void solve() {
    int n, m, q;
    cin >> n >> m >> q;

    for (int i = 0; i < n; ++i) {
        sz[i] = 1;
        p[i] = i;
        len[i] = 0;
    }
    
    for (int i = 0; i < m; ++i) {
        int v, u;
        cin >> v >> u;
        --v; --u;

        e[i] = {v, u};
        e[i + m] = {v, u};
    }

    for (int qi = 0; qi < q; ++qi) {
        int l, r;
        cin >> l >> r;
        --l, --r;

        int nl = r + 1, nr = m + l - 1;
        b[nl / bs].push_back({nl, nr, qi});
    }

    for (int bi = 0; bi < bc; ++bi) {
        sort(all(b[bi]), [](query& a, query& b) {return a.r < b.r;});
        int st = (bi + 1) * bs;
        int cur_r = st;
        int res = 0;
        for (auto& [l, r, qi] : b[bi]) {
            dbg(bi, qi, l, r, res);
            while (cur_r <= r) {
                res |= unite(e[cur_r].first, e[cur_r].second);
                ++cur_r;
                dbg(e[cur_r], cur_r);
            }
            int k = sz(hist), add = 0;
            for (int i = l; i <= min(r, st - 1); ++i) {
                add |= unite(e[i].first, e[i].second);
                dbg(e[i], i);
            }
            dbg(res, add);
            rb(k);
            ans[qi] = res | add;
        }
        rb(0);
    }

    for (int qi = 0; qi < q; ++qi) {
        cout << (ans[qi] ? "YES" : "NO") << "\n";
    }
}

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

#ifdef ONPC
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    freopen("error.txt", "w", stderr);
#endif

    int t = 1;
    //cin >> t;
    for (int i = 1; i <= t; ++i) {
#ifdef ONPC
        cerr << "===========" << i << "===========" << '\n';
#endif
        solve();
    }

#ifdef ONPC
    cerr << endl << "Time " << clock() * 1.0 / CLOCKS_PER_SEC << " sec" << endl;
#endif
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9820 KB Output is correct
2 Correct 3 ms 9820 KB Output is correct
3 Correct 3 ms 9816 KB Output is correct
4 Correct 3 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 3 ms 9820 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9836 KB Output is correct
9 Correct 3 ms 9820 KB Output is correct
10 Correct 5 ms 9852 KB Output is correct
11 Correct 4 ms 9816 KB Output is correct
12 Correct 3 ms 10052 KB Output is correct
13 Correct 4 ms 9884 KB Output is correct
14 Correct 4 ms 9816 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 3 ms 9820 KB Output is correct
17 Correct 3 ms 9820 KB Output is correct
18 Correct 4 ms 9820 KB Output is correct
19 Correct 4 ms 9820 KB Output is correct
20 Correct 4 ms 9820 KB Output is correct
21 Correct 4 ms 9820 KB Output is correct
22 Correct 4 ms 10000 KB Output is correct
23 Correct 3 ms 10000 KB Output is correct
24 Correct 5 ms 9820 KB Output is correct
25 Correct 4 ms 10020 KB Output is correct
26 Correct 3 ms 9816 KB Output is correct
27 Correct 5 ms 9820 KB Output is correct
28 Correct 3 ms 9820 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9820 KB Output is correct
2 Correct 3 ms 9820 KB Output is correct
3 Correct 3 ms 9816 KB Output is correct
4 Correct 3 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 3 ms 9820 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9836 KB Output is correct
9 Correct 3 ms 9820 KB Output is correct
10 Correct 5 ms 9852 KB Output is correct
11 Correct 4 ms 9816 KB Output is correct
12 Correct 3 ms 10052 KB Output is correct
13 Correct 4 ms 9884 KB Output is correct
14 Correct 4 ms 9816 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 3 ms 9820 KB Output is correct
17 Correct 3 ms 9820 KB Output is correct
18 Correct 4 ms 9820 KB Output is correct
19 Correct 4 ms 9820 KB Output is correct
20 Correct 4 ms 9820 KB Output is correct
21 Correct 4 ms 9820 KB Output is correct
22 Correct 4 ms 10000 KB Output is correct
23 Correct 3 ms 10000 KB Output is correct
24 Correct 5 ms 9820 KB Output is correct
25 Correct 4 ms 10020 KB Output is correct
26 Correct 3 ms 9816 KB Output is correct
27 Correct 5 ms 9820 KB Output is correct
28 Correct 3 ms 9820 KB Output is correct
29 Correct 20 ms 10076 KB Output is correct
30 Correct 24 ms 10076 KB Output is correct
31 Correct 28 ms 10072 KB Output is correct
32 Correct 27 ms 10072 KB Output is correct
33 Correct 35 ms 10072 KB Output is correct
34 Correct 27 ms 10076 KB Output is correct
35 Correct 28 ms 10076 KB Output is correct
36 Correct 19 ms 10076 KB Output is correct
37 Correct 28 ms 10168 KB Output is correct
38 Correct 30 ms 10076 KB Output is correct
39 Correct 21 ms 10076 KB Output is correct
40 Correct 22 ms 10072 KB Output is correct
41 Correct 22 ms 10076 KB Output is correct
42 Correct 21 ms 10072 KB Output is correct
43 Correct 45 ms 10076 KB Output is correct
44 Correct 42 ms 10076 KB Output is correct
45 Correct 40 ms 10268 KB Output is correct
46 Correct 38 ms 10076 KB Output is correct
47 Correct 23 ms 10076 KB Output is correct
48 Correct 25 ms 10332 KB Output is correct
49 Correct 25 ms 10076 KB Output is correct
50 Correct 27 ms 10292 KB Output is correct
51 Correct 28 ms 10260 KB Output is correct
52 Correct 31 ms 10324 KB Output is correct
53 Correct 27 ms 10076 KB Output is correct
54 Correct 28 ms 10076 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9820 KB Output is correct
2 Correct 3 ms 9820 KB Output is correct
3 Execution timed out 2019 ms 31716 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9820 KB Output is correct
2 Correct 3 ms 9820 KB Output is correct
3 Correct 3 ms 9816 KB Output is correct
4 Correct 3 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 3 ms 9820 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9836 KB Output is correct
9 Correct 3 ms 9820 KB Output is correct
10 Correct 5 ms 9852 KB Output is correct
11 Correct 4 ms 9816 KB Output is correct
12 Correct 3 ms 10052 KB Output is correct
13 Correct 4 ms 9884 KB Output is correct
14 Correct 4 ms 9816 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 3 ms 9820 KB Output is correct
17 Correct 3 ms 9820 KB Output is correct
18 Correct 4 ms 9820 KB Output is correct
19 Correct 4 ms 9820 KB Output is correct
20 Correct 4 ms 9820 KB Output is correct
21 Correct 4 ms 9820 KB Output is correct
22 Correct 4 ms 10000 KB Output is correct
23 Correct 3 ms 10000 KB Output is correct
24 Correct 5 ms 9820 KB Output is correct
25 Correct 4 ms 10020 KB Output is correct
26 Correct 3 ms 9816 KB Output is correct
27 Correct 5 ms 9820 KB Output is correct
28 Correct 3 ms 9820 KB Output is correct
29 Execution timed out 2019 ms 31716 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #5
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9820 KB Output is correct
2 Correct 3 ms 9820 KB Output is correct
3 Correct 3 ms 9816 KB Output is correct
4 Correct 3 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 3 ms 9820 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9836 KB Output is correct
9 Correct 3 ms 9820 KB Output is correct
10 Correct 5 ms 9852 KB Output is correct
11 Correct 4 ms 9816 KB Output is correct
12 Correct 3 ms 10052 KB Output is correct
13 Correct 4 ms 9884 KB Output is correct
14 Correct 4 ms 9816 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 3 ms 9820 KB Output is correct
17 Correct 3 ms 9820 KB Output is correct
18 Correct 4 ms 9820 KB Output is correct
19 Correct 4 ms 9820 KB Output is correct
20 Correct 4 ms 9820 KB Output is correct
21 Correct 4 ms 9820 KB Output is correct
22 Correct 4 ms 10000 KB Output is correct
23 Correct 3 ms 10000 KB Output is correct
24 Correct 5 ms 9820 KB Output is correct
25 Correct 4 ms 10020 KB Output is correct
26 Correct 3 ms 9816 KB Output is correct
27 Correct 5 ms 9820 KB Output is correct
28 Correct 3 ms 9820 KB Output is correct
29 Correct 20 ms 10076 KB Output is correct
30 Correct 24 ms 10076 KB Output is correct
31 Correct 28 ms 10072 KB Output is correct
32 Correct 27 ms 10072 KB Output is correct
33 Correct 35 ms 10072 KB Output is correct
34 Correct 27 ms 10076 KB Output is correct
35 Correct 28 ms 10076 KB Output is correct
36 Correct 19 ms 10076 KB Output is correct
37 Correct 28 ms 10168 KB Output is correct
38 Correct 30 ms 10076 KB Output is correct
39 Correct 21 ms 10076 KB Output is correct
40 Correct 22 ms 10072 KB Output is correct
41 Correct 22 ms 10076 KB Output is correct
42 Correct 21 ms 10072 KB Output is correct
43 Correct 45 ms 10076 KB Output is correct
44 Correct 42 ms 10076 KB Output is correct
45 Correct 40 ms 10268 KB Output is correct
46 Correct 38 ms 10076 KB Output is correct
47 Correct 23 ms 10076 KB Output is correct
48 Correct 25 ms 10332 KB Output is correct
49 Correct 25 ms 10076 KB Output is correct
50 Correct 27 ms 10292 KB Output is correct
51 Correct 28 ms 10260 KB Output is correct
52 Correct 31 ms 10324 KB Output is correct
53 Correct 27 ms 10076 KB Output is correct
54 Correct 28 ms 10076 KB Output is correct
55 Correct 182 ms 21960 KB Output is correct
56 Correct 270 ms 25544 KB Output is correct
57 Correct 258 ms 24984 KB Output is correct
58 Correct 254 ms 22016 KB Output is correct
59 Correct 416 ms 21856 KB Output is correct
60 Correct 447 ms 24520 KB Output is correct
61 Correct 301 ms 21972 KB Output is correct
62 Correct 362 ms 25036 KB Output is correct
63 Correct 391 ms 19924 KB Output is correct
64 Correct 417 ms 22472 KB Output is correct
65 Correct 471 ms 25028 KB Output is correct

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9820 KB Output is correct
2 Correct 3 ms 9820 KB Output is correct
3 Correct 3 ms 9816 KB Output is correct
4 Correct 3 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 3 ms 9820 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9836 KB Output is correct
9 Correct 3 ms 9820 KB Output is correct
10 Correct 5 ms 9852 KB Output is correct
11 Correct 4 ms 9816 KB Output is correct
12 Correct 3 ms 10052 KB Output is correct
13 Correct 4 ms 9884 KB Output is correct
14 Correct 4 ms 9816 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 3 ms 9820 KB Output is correct
17 Correct 3 ms 9820 KB Output is correct
18 Correct 4 ms 9820 KB Output is correct
19 Correct 4 ms 9820 KB Output is correct
20 Correct 4 ms 9820 KB Output is correct
21 Correct 4 ms 9820 KB Output is correct
22 Correct 4 ms 10000 KB Output is correct
23 Correct 3 ms 10000 KB Output is correct
24 Correct 5 ms 9820 KB Output is correct
25 Correct 4 ms 10020 KB Output is correct
26 Correct 3 ms 9816 KB Output is correct
27 Correct 5 ms 9820 KB Output is correct
28 Correct 3 ms 9820 KB Output is correct
29 Correct 20 ms 10076 KB Output is correct
30 Correct 24 ms 10076 KB Output is correct
31 Correct 28 ms 10072 KB Output is correct
32 Correct 27 ms 10072 KB Output is correct
33 Correct 35 ms 10072 KB Output is correct
34 Correct 27 ms 10076 KB Output is correct
35 Correct 28 ms 10076 KB Output is correct
36 Correct 19 ms 10076 KB Output is correct
37 Correct 28 ms 10168 KB Output is correct
38 Correct 30 ms 10076 KB Output is correct
39 Correct 21 ms 10076 KB Output is correct
40 Correct 22 ms 10072 KB Output is correct
41 Correct 22 ms 10076 KB Output is correct
42 Correct 21 ms 10072 KB Output is correct
43 Correct 45 ms 10076 KB Output is correct
44 Correct 42 ms 10076 KB Output is correct
45 Correct 40 ms 10268 KB Output is correct
46 Correct 38 ms 10076 KB Output is correct
47 Correct 23 ms 10076 KB Output is correct
48 Correct 25 ms 10332 KB Output is correct
49 Correct 25 ms 10076 KB Output is correct
50 Correct 27 ms 10292 KB Output is correct
51 Correct 28 ms 10260 KB Output is correct
52 Correct 31 ms 10324 KB Output is correct
53 Correct 27 ms 10076 KB Output is correct
54 Correct 28 ms 10076 KB Output is correct
55 Execution timed out 2019 ms 31716 KB Time limit exceeded
56 Halted 0 ms 0 KB -