Submission #877225

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
877225	2023-11-23T04:05:11 Z	CDuong	Joker (BOI20_joker)	C++17	14 / 100	2000 ms	3016 KB

Joker

/*
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,fma,bmi,bmi2,sse4.2,popcnt,lzcnt")
*/

#include <bits/stdc++.h>
#define taskname "NOHOME"
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define i64 long long
#define pb push_back
#define ff first
#define ss second
#define isz(x) (int)x.size()
using namespace std;

const int mxN = 2e5 + 5;
const int mod = 1e9 + 7;
const i64 oo = 1e18;

struct DisjointSetUnion01 {
    vector<int> lab, val;

    DisjointSetUnion01(int n) : lab(n + 1, -1), val(n + 1, 0) {}

    pair<int, int> root(int v) {
        if (lab[v] < 0) return {v, val[v]};
        auto cpar = root(lab[v]);
        lab[v] = cpar.ff, val[v] ^= cpar.ss;
        return {lab[v], val[v]};
    }

    bool merge(int u, int v, int edge_val) {
        auto rootu = root(u);
        auto rootv = root(v);
        if (rootu.ff != rootv.ff) {
            if (-lab[rootu.ff] < -lab[rootv.ff])
                swap(u, v), swap(rootu, rootv);
            lab[rootu.ff] += lab[rootv.ff];
            lab[rootv.ff] = rootu.ff;
            val[rootv.ff] = rootu.ss ^ rootv.ss ^ edge_val;
            return true;
        }
        return (rootu.ss ^ rootv.ss ^ edge_val ^ 1);
    }
};

int n, m, q;
vector<pair<int, int>> edges;

void solve() {
    cin >> n >> m >> q;
    for (int i = 1; i <= m; ++i) {
        int u, v;
        cin >> u >> v;
        edges.emplace_back(u, v);
    }
    for (int i = 1; i <= q; ++i) {
        int l, r; cin >> l >> r;
        bool flag = true;
        DisjointSetUnion01 dsu(n + 1);
        for (int i = 0; i < l - 1; ++i) flag &= dsu.merge(edges[i].ff, edges[i].ss, 1);
        for (int i = r; i < m; ++i) flag &= dsu.merge(edges[i].ff, edges[i].ss, 1);
        cout << (flag ? "NO" : "YES") << "\n";
    }
}

signed main() {

#ifndef CDuongg
    if(fopen(taskname".inp", "r"))
        assert(freopen(taskname".inp", "r", stdin)), assert(freopen(taskname".out", "w", stdout));
#else
    freopen("bai3.inp", "r", stdin);
    freopen("bai3.out", "w", stdout);
    auto start = chrono::high_resolution_clock::now();
#endif

    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1; //cin >> t;
    while(t--) solve();

#ifdef CDuongg
   auto end = chrono::high_resolution_clock::now();
   cout << "\n"; for(int i = 1; i <= 100; ++i) cout << '=';
   cout << "\nExecution time: " << chrono::duration_cast<chrono::milliseconds> (end - start).count() << "[ms]" << endl;
#endif

}

Subtask #1
6.0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	600 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	388 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct

Subtask #2
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	600 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	388 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	10 ms	348 KB	Output is correct
30	Correct	20 ms	500 KB	Output is correct
31	Correct	21 ms	348 KB	Output is correct
32	Correct	18 ms	344 KB	Output is correct
33	Correct	15 ms	492 KB	Output is correct
34	Correct	20 ms	348 KB	Output is correct
35	Correct	23 ms	348 KB	Output is correct
36	Correct	14 ms	492 KB	Output is correct
37	Correct	18 ms	496 KB	Output is correct
38	Correct	21 ms	348 KB	Output is correct
39	Correct	14 ms	348 KB	Output is correct
40	Correct	17 ms	348 KB	Output is correct
41	Correct	16 ms	488 KB	Output is correct
42	Correct	16 ms	348 KB	Output is correct
43	Correct	24 ms	492 KB	Output is correct
44	Correct	26 ms	488 KB	Output is correct
45	Correct	28 ms	488 KB	Output is correct
46	Correct	27 ms	348 KB	Output is correct
47	Correct	17 ms	348 KB	Output is correct
48	Correct	19 ms	488 KB	Output is correct
49	Correct	20 ms	348 KB	Output is correct
50	Correct	20 ms	344 KB	Output is correct
51	Correct	16 ms	348 KB	Output is correct
52	Correct	18 ms	348 KB	Output is correct
53	Correct	20 ms	348 KB	Output is correct
54	Correct	25 ms	496 KB	Output is correct

Subtask #3
0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Execution timed out	2015 ms	3012 KB	Time limit exceeded
4	Halted	0 ms	0 KB	-

Subtask #4
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	600 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	388 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Execution timed out	2015 ms	3012 KB	Time limit exceeded
30	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	600 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	388 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	10 ms	348 KB	Output is correct
30	Correct	20 ms	500 KB	Output is correct
31	Correct	21 ms	348 KB	Output is correct
32	Correct	18 ms	344 KB	Output is correct
33	Correct	15 ms	492 KB	Output is correct
34	Correct	20 ms	348 KB	Output is correct
35	Correct	23 ms	348 KB	Output is correct
36	Correct	14 ms	492 KB	Output is correct
37	Correct	18 ms	496 KB	Output is correct
38	Correct	21 ms	348 KB	Output is correct
39	Correct	14 ms	348 KB	Output is correct
40	Correct	17 ms	348 KB	Output is correct
41	Correct	16 ms	488 KB	Output is correct
42	Correct	16 ms	348 KB	Output is correct
43	Correct	24 ms	492 KB	Output is correct
44	Correct	26 ms	488 KB	Output is correct
45	Correct	28 ms	488 KB	Output is correct
46	Correct	27 ms	348 KB	Output is correct
47	Correct	17 ms	348 KB	Output is correct
48	Correct	19 ms	488 KB	Output is correct
49	Correct	20 ms	348 KB	Output is correct
50	Correct	20 ms	344 KB	Output is correct
51	Correct	16 ms	348 KB	Output is correct
52	Correct	18 ms	348 KB	Output is correct
53	Correct	20 ms	348 KB	Output is correct
54	Correct	25 ms	496 KB	Output is correct
55	Execution timed out	2033 ms	3016 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	600 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	388 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	10 ms	348 KB	Output is correct
30	Correct	20 ms	500 KB	Output is correct
31	Correct	21 ms	348 KB	Output is correct
32	Correct	18 ms	344 KB	Output is correct
33	Correct	15 ms	492 KB	Output is correct
34	Correct	20 ms	348 KB	Output is correct
35	Correct	23 ms	348 KB	Output is correct
36	Correct	14 ms	492 KB	Output is correct
37	Correct	18 ms	496 KB	Output is correct
38	Correct	21 ms	348 KB	Output is correct
39	Correct	14 ms	348 KB	Output is correct
40	Correct	17 ms	348 KB	Output is correct
41	Correct	16 ms	488 KB	Output is correct
42	Correct	16 ms	348 KB	Output is correct
43	Correct	24 ms	492 KB	Output is correct
44	Correct	26 ms	488 KB	Output is correct
45	Correct	28 ms	488 KB	Output is correct
46	Correct	27 ms	348 KB	Output is correct
47	Correct	17 ms	348 KB	Output is correct
48	Correct	19 ms	488 KB	Output is correct
49	Correct	20 ms	348 KB	Output is correct
50	Correct	20 ms	344 KB	Output is correct
51	Correct	16 ms	348 KB	Output is correct
52	Correct	18 ms	348 KB	Output is correct
53	Correct	20 ms	348 KB	Output is correct
54	Correct	25 ms	496 KB	Output is correct
55	Execution timed out	2015 ms	3012 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Submission #877225

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 8.0 / 8.0

Subtask #3 0 / 25.0

Subtask #4 0 / 10.0

Subtask #5 0 / 22.0

Subtask #6 0 / 29.0

Subtask #1
6.0 / 6.0

Subtask #2
8.0 / 8.0

Subtask #3
0 / 25.0

Subtask #4
0 / 10.0

Subtask #5
0 / 22.0

Subtask #6
0 / 29.0