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Submission #931405

# Submission time Handle Problem Language Result Execution time Memory
931405 2024-02-21T18:12:00 Z qwusha Joker (BOI20_joker) C++17
14 / 100
 2000 ms 16032 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define fi first
#define se second
typedef long double ld;
const ll inf = 1e9;
const ld eps = 1e-8;
const ll logs = 32;
#include <cmath>
bool ch = 0;
vector<vector<pair<int, int>>> g;
vector<bool> ok;
vector<int> col;

void dfs(int v, int c = 0) {
    col[v] = c;
    for (auto [u, ind] : g[v]) {
        if (!ok[ind]) {
            continue;
        }
        if (col[u] == -1)
            dfs(u, 1 - c);
        else if (col[u] == col[v])
            ch = 1;
    }
}


signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n, m, q;
    cin >> n >> m >> q;
    g.resize(n);
    ok.resize(m, 1);
    col.resize(n);
    for (int i = 0; i < m; i++) {
        int v, u;
        cin >> v >> u;
        g[v - 1].push_back({u - 1, i});
        g[u - 1].push_back({v - 1, i});
    }
    for (int qw = 0; qw < q; qw++) {
        int l, r;
        cin >> l >> r;
        for (int i = 0; i < m; i++) {
            if (l - 1 <= i && i < r)
                ok[i] = 0;
            else
                ok[i] = 1;
        }
        for (int i = 0; i < n; i++) {
            col[i] = -1;
        }
        bool check = 0;
        for (int i = 0; i < n; i++) {
            if (col[i] == -1) {
                ch = 0;
                dfs(i);
                if (ch)
                    check = 1;
            }
        }
        if (check) {
            cout << "YES" << '\n';
        } else {
            cout << "NO" << '\n';
        }
    }
}

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 344 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 1 ms 456 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 2 ms 604 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 476 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 1 ms 344 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 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 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 344 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 1 ms 456 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 2 ms 604 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 476 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 1 ms 344 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 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 49 ms 572 KB Output is correct
30 Correct 109 ms 600 KB Output is correct
31 Correct 105 ms 600 KB Output is correct
32 Correct 88 ms 604 KB Output is correct
33 Correct 72 ms 604 KB Output is correct
34 Correct 113 ms 632 KB Output is correct
35 Correct 120 ms 604 KB Output is correct
36 Correct 36 ms 604 KB Output is correct
37 Correct 67 ms 604 KB Output is correct
38 Correct 53 ms 632 KB Output is correct
39 Correct 78 ms 620 KB Output is correct
40 Correct 75 ms 604 KB Output is correct
41 Correct 81 ms 600 KB Output is correct
42 Correct 76 ms 600 KB Output is correct
43 Correct 61 ms 344 KB Output is correct
44 Correct 76 ms 624 KB Output is correct
45 Correct 89 ms 892 KB Output is correct
46 Correct 98 ms 888 KB Output is correct
47 Correct 74 ms 348 KB Output is correct
48 Correct 82 ms 600 KB Output is correct
49 Correct 94 ms 600 KB Output is correct
50 Correct 112 ms 848 KB Output is correct
51 Correct 76 ms 600 KB Output is correct
52 Correct 87 ms 604 KB Output is correct
53 Correct 99 ms 616 KB Output is correct
54 Correct 116 ms 628 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 344 KB Output is correct
3 Execution timed out 2078 ms 14572 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 344 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 1 ms 456 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 2 ms 604 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 476 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 1 ms 344 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 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Execution timed out 2078 ms 14572 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 344 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 1 ms 456 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 2 ms 604 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 476 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 1 ms 344 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 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 49 ms 572 KB Output is correct
30 Correct 109 ms 600 KB Output is correct
31 Correct 105 ms 600 KB Output is correct
32 Correct 88 ms 604 KB Output is correct
33 Correct 72 ms 604 KB Output is correct
34 Correct 113 ms 632 KB Output is correct
35 Correct 120 ms 604 KB Output is correct
36 Correct 36 ms 604 KB Output is correct
37 Correct 67 ms 604 KB Output is correct
38 Correct 53 ms 632 KB Output is correct
39 Correct 78 ms 620 KB Output is correct
40 Correct 75 ms 604 KB Output is correct
41 Correct 81 ms 600 KB Output is correct
42 Correct 76 ms 600 KB Output is correct
43 Correct 61 ms 344 KB Output is correct
44 Correct 76 ms 624 KB Output is correct
45 Correct 89 ms 892 KB Output is correct
46 Correct 98 ms 888 KB Output is correct
47 Correct 74 ms 348 KB Output is correct
48 Correct 82 ms 600 KB Output is correct
49 Correct 94 ms 600 KB Output is correct
50 Correct 112 ms 848 KB Output is correct
51 Correct 76 ms 600 KB Output is correct
52 Correct 87 ms 604 KB Output is correct
53 Correct 99 ms 616 KB Output is correct
54 Correct 116 ms 628 KB Output is correct
55 Execution timed out 2093 ms 16032 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 344 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 1 ms 456 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 2 ms 604 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 476 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 1 ms 344 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 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 49 ms 572 KB Output is correct
30 Correct 109 ms 600 KB Output is correct
31 Correct 105 ms 600 KB Output is correct
32 Correct 88 ms 604 KB Output is correct
33 Correct 72 ms 604 KB Output is correct
34 Correct 113 ms 632 KB Output is correct
35 Correct 120 ms 604 KB Output is correct
36 Correct 36 ms 604 KB Output is correct
37 Correct 67 ms 604 KB Output is correct
38 Correct 53 ms 632 KB Output is correct
39 Correct 78 ms 620 KB Output is correct
40 Correct 75 ms 604 KB Output is correct
41 Correct 81 ms 600 KB Output is correct
42 Correct 76 ms 600 KB Output is correct
43 Correct 61 ms 344 KB Output is correct
44 Correct 76 ms 624 KB Output is correct
45 Correct 89 ms 892 KB Output is correct
46 Correct 98 ms 888 KB Output is correct
47 Correct 74 ms 348 KB Output is correct
48 Correct 82 ms 600 KB Output is correct
49 Correct 94 ms 600 KB Output is correct
50 Correct 112 ms 848 KB Output is correct
51 Correct 76 ms 600 KB Output is correct
52 Correct 87 ms 604 KB Output is correct
53 Correct 99 ms 616 KB Output is correct
54 Correct 116 ms 628 KB Output is correct
55 Execution timed out 2078 ms 14572 KB Time limit exceeded
56 Halted 0 ms 0 KB -