oj.uz

Submission #930545

# Submission time Handle Problem Language Result Execution time Memory
930545 2024-02-20T06:00:31 Z Ghulam_Junaid Joker (BOI20_joker) C++17
39 / 100
 2000 ms 218816 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 2e5 + 3;
int n, m, q, vis_nq[N], par[N], col[N];
vector<pair<int, int>> g[N], atl[N];
pair<int, int> edge[N];
vector<int> S[N];
bool ans[N];

int root(int v){
    return (par[v] == -1 ? v : par[v] = root(par[v]));
}

inline bool merge(int u, int v){
    int r1 = root(u);
    int r2 = root(v);

    if (r1 == r2)
        return (col[u] != col[v]);

    if (S[r2].size() > S[r1].size())
        swap(r1, r2);

    int take = 0;
    if (col[u] == col[v])
        take = 3;

    for (int x : S[r2]){
        col[x] ^= take;
        S[r1].push_back(x);
        par[x] = r1;
    }
    S[r2].clear();
    return 1;
}

int main(){
    scanf("%d%d%d", &n, &m, &q);
    for (int i = 1; i <= m; i ++){
        int u, v;
        scanf("%d%d", &u, &v);

        g[u].push_back({i, v});
        g[v].push_back({i, u});
        edge[i] = {u, v};
    }

    int mx = 0;
    for (int i = 0; i < q; i ++){
        int l, r;
        scanf("%d%d", &l, &r);
        mx = max(mx, l);
        atl[l].push_back({r, i});
    }

    for (int i = 1; i <= mx; i ++){
        if (atl[i].size() < 2) continue;

        sort(atl[i].begin(), atl[i].end());
        reverse(atl[i].begin(), atl[i].end());
    }

    for (int i = 1; i <= mx; i ++){
        if (atl[i].size() == 0) continue;

        for (int j = 1; j <= n; j ++){
            S[j].clear();
            S[j].push_back(j);

            par[j] = -1;
            col[j] = 1;
        }

        bool even = 1;
        for (int j = 1; j < i; j ++)
            even &= merge(edge[j].first, edge[j].second);

        int x = m;
        for (auto [r, id] : atl[i]){
            for (int j = r + 1; j <= x; j ++)
                even &= merge(edge[j].first, edge[j].second);
            x = r;

            if (even)
                ans[id] = 0;
            else
                ans[id] = 1;
        }
    }

    for (int i = 0; i < q; i ++){
        if (ans[i])
            printf("YES\n");
        else
            printf("NO\n");
    }
}

Compilation message

Joker.cpp: In function 'int main()':
Joker.cpp:39:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |     scanf("%d%d%d", &n, &m, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
Joker.cpp:42:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |         scanf("%d%d", &u, &v);
      |         ~~~~~^~~~~~~~~~~~~~~~
Joker.cpp:52:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |         scanf("%d%d", &l, &r);
      |         ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16732 KB Output is correct
2 Correct 4 ms 16732 KB Output is correct
3 Correct 4 ms 16728 KB Output is correct
4 Correct 4 ms 16840 KB Output is correct
5 Correct 4 ms 16732 KB Output is correct
6 Correct 4 ms 16732 KB Output is correct
7 Correct 4 ms 16828 KB Output is correct
8 Correct 4 ms 16732 KB Output is correct
9 Correct 4 ms 16732 KB Output is correct
10 Correct 5 ms 16732 KB Output is correct
11 Correct 6 ms 16732 KB Output is correct
12 Correct 4 ms 16732 KB Output is correct
13 Correct 5 ms 16732 KB Output is correct
14 Correct 4 ms 16732 KB Output is correct
15 Correct 4 ms 16732 KB Output is correct
16 Correct 4 ms 16732 KB Output is correct
17 Correct 4 ms 16732 KB Output is correct
18 Correct 4 ms 16732 KB Output is correct
19 Correct 4 ms 16732 KB Output is correct
20 Correct 4 ms 16732 KB Output is correct
21 Correct 4 ms 16728 KB Output is correct
22 Correct 4 ms 16732 KB Output is correct
23 Correct 5 ms 16844 KB Output is correct
24 Correct 4 ms 16732 KB Output is correct
25 Correct 4 ms 16732 KB Output is correct
26 Correct 4 ms 16884 KB Output is correct
27 Correct 4 ms 16732 KB Output is correct
28 Correct 4 ms 16732 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16732 KB Output is correct
2 Correct 4 ms 16732 KB Output is correct
3 Correct 4 ms 16728 KB Output is correct
4 Correct 4 ms 16840 KB Output is correct
5 Correct 4 ms 16732 KB Output is correct
6 Correct 4 ms 16732 KB Output is correct
7 Correct 4 ms 16828 KB Output is correct
8 Correct 4 ms 16732 KB Output is correct
9 Correct 4 ms 16732 KB Output is correct
10 Correct 5 ms 16732 KB Output is correct
11 Correct 6 ms 16732 KB Output is correct
12 Correct 4 ms 16732 KB Output is correct
13 Correct 5 ms 16732 KB Output is correct
14 Correct 4 ms 16732 KB Output is correct
15 Correct 4 ms 16732 KB Output is correct
16 Correct 4 ms 16732 KB Output is correct
17 Correct 4 ms 16732 KB Output is correct
18 Correct 4 ms 16732 KB Output is correct
19 Correct 4 ms 16732 KB Output is correct
20 Correct 4 ms 16732 KB Output is correct
21 Correct 4 ms 16728 KB Output is correct
22 Correct 4 ms 16732 KB Output is correct
23 Correct 5 ms 16844 KB Output is correct
24 Correct 4 ms 16732 KB Output is correct
25 Correct 4 ms 16732 KB Output is correct
26 Correct 4 ms 16884 KB Output is correct
27 Correct 4 ms 16732 KB Output is correct
28 Correct 4 ms 16732 KB Output is correct
29 Correct 22 ms 17044 KB Output is correct
30 Correct 37 ms 17228 KB Output is correct
31 Correct 37 ms 17240 KB Output is correct
32 Correct 26 ms 16988 KB Output is correct
33 Correct 19 ms 16988 KB Output is correct
34 Correct 40 ms 17244 KB Output is correct
35 Correct 42 ms 17244 KB Output is correct
36 Correct 28 ms 17244 KB Output is correct
37 Correct 47 ms 19320 KB Output is correct
38 Correct 51 ms 18268 KB Output is correct
39 Correct 37 ms 17508 KB Output is correct
40 Correct 29 ms 17144 KB Output is correct
41 Correct 27 ms 17240 KB Output is correct
42 Correct 26 ms 16988 KB Output is correct
43 Correct 22 ms 16988 KB Output is correct
44 Correct 29 ms 16988 KB Output is correct
45 Correct 40 ms 17244 KB Output is correct
46 Correct 46 ms 17496 KB Output is correct
47 Correct 24 ms 16988 KB Output is correct
48 Correct 26 ms 16984 KB Output is correct
49 Correct 35 ms 17540 KB Output is correct
50 Correct 42 ms 17240 KB Output is correct
51 Correct 22 ms 16984 KB Output is correct
52 Correct 26 ms 16984 KB Output is correct
53 Correct 37 ms 17108 KB Output is correct
54 Correct 42 ms 17244 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16732 KB Output is correct
2 Correct 4 ms 16732 KB Output is correct
3 Correct 106 ms 28644 KB Output is correct
4 Correct 140 ms 35316 KB Output is correct
5 Correct 134 ms 33988 KB Output is correct
6 Correct 123 ms 29540 KB Output is correct
7 Correct 138 ms 30448 KB Output is correct
8 Correct 113 ms 27328 KB Output is correct
9 Correct 114 ms 29576 KB Output is correct
10 Correct 144 ms 35560 KB Output is correct
11 Correct 136 ms 29508 KB Output is correct
12 Correct 137 ms 33756 KB Output is correct
13 Correct 97 ms 25024 KB Output is correct
14 Correct 112 ms 27072 KB Output is correct
15 Correct 131 ms 31684 KB Output is correct
16 Correct 150 ms 35384 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16732 KB Output is correct
2 Correct 4 ms 16732 KB Output is correct
3 Correct 4 ms 16728 KB Output is correct
4 Correct 4 ms 16840 KB Output is correct
5 Correct 4 ms 16732 KB Output is correct
6 Correct 4 ms 16732 KB Output is correct
7 Correct 4 ms 16828 KB Output is correct
8 Correct 4 ms 16732 KB Output is correct
9 Correct 4 ms 16732 KB Output is correct
10 Correct 5 ms 16732 KB Output is correct
11 Correct 6 ms 16732 KB Output is correct
12 Correct 4 ms 16732 KB Output is correct
13 Correct 5 ms 16732 KB Output is correct
14 Correct 4 ms 16732 KB Output is correct
15 Correct 4 ms 16732 KB Output is correct
16 Correct 4 ms 16732 KB Output is correct
17 Correct 4 ms 16732 KB Output is correct
18 Correct 4 ms 16732 KB Output is correct
19 Correct 4 ms 16732 KB Output is correct
20 Correct 4 ms 16732 KB Output is correct
21 Correct 4 ms 16728 KB Output is correct
22 Correct 4 ms 16732 KB Output is correct
23 Correct 5 ms 16844 KB Output is correct
24 Correct 4 ms 16732 KB Output is correct
25 Correct 4 ms 16732 KB Output is correct
26 Correct 4 ms 16884 KB Output is correct
27 Correct 4 ms 16732 KB Output is correct
28 Correct 4 ms 16732 KB Output is correct
29 Correct 106 ms 28644 KB Output is correct
30 Correct 140 ms 35316 KB Output is correct
31 Correct 134 ms 33988 KB Output is correct
32 Correct 123 ms 29540 KB Output is correct
33 Correct 138 ms 30448 KB Output is correct
34 Correct 113 ms 27328 KB Output is correct
35 Correct 114 ms 29576 KB Output is correct
36 Correct 144 ms 35560 KB Output is correct
37 Correct 136 ms 29508 KB Output is correct
38 Correct 137 ms 33756 KB Output is correct
39 Correct 97 ms 25024 KB Output is correct
40 Correct 112 ms 27072 KB Output is correct
41 Correct 131 ms 31684 KB Output is correct
42 Correct 150 ms 35384 KB Output is correct
43 Correct 1562 ms 192668 KB Output is correct
44 Execution timed out 2050 ms 218816 KB Time limit exceeded
45 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16732 KB Output is correct
2 Correct 4 ms 16732 KB Output is correct
3 Correct 4 ms 16728 KB Output is correct
4 Correct 4 ms 16840 KB Output is correct
5 Correct 4 ms 16732 KB Output is correct
6 Correct 4 ms 16732 KB Output is correct
7 Correct 4 ms 16828 KB Output is correct
8 Correct 4 ms 16732 KB Output is correct
9 Correct 4 ms 16732 KB Output is correct
10 Correct 5 ms 16732 KB Output is correct
11 Correct 6 ms 16732 KB Output is correct
12 Correct 4 ms 16732 KB Output is correct
13 Correct 5 ms 16732 KB Output is correct
14 Correct 4 ms 16732 KB Output is correct
15 Correct 4 ms 16732 KB Output is correct
16 Correct 4 ms 16732 KB Output is correct
17 Correct 4 ms 16732 KB Output is correct
18 Correct 4 ms 16732 KB Output is correct
19 Correct 4 ms 16732 KB Output is correct
20 Correct 4 ms 16732 KB Output is correct
21 Correct 4 ms 16728 KB Output is correct
22 Correct 4 ms 16732 KB Output is correct
23 Correct 5 ms 16844 KB Output is correct
24 Correct 4 ms 16732 KB Output is correct
25 Correct 4 ms 16732 KB Output is correct
26 Correct 4 ms 16884 KB Output is correct
27 Correct 4 ms 16732 KB Output is correct
28 Correct 4 ms 16732 KB Output is correct
29 Correct 22 ms 17044 KB Output is correct
30 Correct 37 ms 17228 KB Output is correct
31 Correct 37 ms 17240 KB Output is correct
32 Correct 26 ms 16988 KB Output is correct
33 Correct 19 ms 16988 KB Output is correct
34 Correct 40 ms 17244 KB Output is correct
35 Correct 42 ms 17244 KB Output is correct
36 Correct 28 ms 17244 KB Output is correct
37 Correct 47 ms 19320 KB Output is correct
38 Correct 51 ms 18268 KB Output is correct
39 Correct 37 ms 17508 KB Output is correct
40 Correct 29 ms 17144 KB Output is correct
41 Correct 27 ms 17240 KB Output is correct
42 Correct 26 ms 16988 KB Output is correct
43 Correct 22 ms 16988 KB Output is correct
44 Correct 29 ms 16988 KB Output is correct
45 Correct 40 ms 17244 KB Output is correct
46 Correct 46 ms 17496 KB Output is correct
47 Correct 24 ms 16988 KB Output is correct
48 Correct 26 ms 16984 KB Output is correct
49 Correct 35 ms 17540 KB Output is correct
50 Correct 42 ms 17240 KB Output is correct
51 Correct 22 ms 16984 KB Output is correct
52 Correct 26 ms 16984 KB Output is correct
53 Correct 37 ms 17108 KB Output is correct
54 Correct 42 ms 17244 KB Output is correct
55 Execution timed out 2045 ms 177616 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16732 KB Output is correct
2 Correct 4 ms 16732 KB Output is correct
3 Correct 4 ms 16728 KB Output is correct
4 Correct 4 ms 16840 KB Output is correct
5 Correct 4 ms 16732 KB Output is correct
6 Correct 4 ms 16732 KB Output is correct
7 Correct 4 ms 16828 KB Output is correct
8 Correct 4 ms 16732 KB Output is correct
9 Correct 4 ms 16732 KB Output is correct
10 Correct 5 ms 16732 KB Output is correct
11 Correct 6 ms 16732 KB Output is correct
12 Correct 4 ms 16732 KB Output is correct
13 Correct 5 ms 16732 KB Output is correct
14 Correct 4 ms 16732 KB Output is correct
15 Correct 4 ms 16732 KB Output is correct
16 Correct 4 ms 16732 KB Output is correct
17 Correct 4 ms 16732 KB Output is correct
18 Correct 4 ms 16732 KB Output is correct
19 Correct 4 ms 16732 KB Output is correct
20 Correct 4 ms 16732 KB Output is correct
21 Correct 4 ms 16728 KB Output is correct
22 Correct 4 ms 16732 KB Output is correct
23 Correct 5 ms 16844 KB Output is correct
24 Correct 4 ms 16732 KB Output is correct
25 Correct 4 ms 16732 KB Output is correct
26 Correct 4 ms 16884 KB Output is correct
27 Correct 4 ms 16732 KB Output is correct
28 Correct 4 ms 16732 KB Output is correct
29 Correct 22 ms 17044 KB Output is correct
30 Correct 37 ms 17228 KB Output is correct
31 Correct 37 ms 17240 KB Output is correct
32 Correct 26 ms 16988 KB Output is correct
33 Correct 19 ms 16988 KB Output is correct
34 Correct 40 ms 17244 KB Output is correct
35 Correct 42 ms 17244 KB Output is correct
36 Correct 28 ms 17244 KB Output is correct
37 Correct 47 ms 19320 KB Output is correct
38 Correct 51 ms 18268 KB Output is correct
39 Correct 37 ms 17508 KB Output is correct
40 Correct 29 ms 17144 KB Output is correct
41 Correct 27 ms 17240 KB Output is correct
42 Correct 26 ms 16988 KB Output is correct
43 Correct 22 ms 16988 KB Output is correct
44 Correct 29 ms 16988 KB Output is correct
45 Correct 40 ms 17244 KB Output is correct
46 Correct 46 ms 17496 KB Output is correct
47 Correct 24 ms 16988 KB Output is correct
48 Correct 26 ms 16984 KB Output is correct
49 Correct 35 ms 17540 KB Output is correct
50 Correct 42 ms 17240 KB Output is correct
51 Correct 22 ms 16984 KB Output is correct
52 Correct 26 ms 16984 KB Output is correct
53 Correct 37 ms 17108 KB Output is correct
54 Correct 42 ms 17244 KB Output is correct
55 Correct 106 ms 28644 KB Output is correct
56 Correct 140 ms 35316 KB Output is correct
57 Correct 134 ms 33988 KB Output is correct
58 Correct 123 ms 29540 KB Output is correct
59 Correct 138 ms 30448 KB Output is correct
60 Correct 113 ms 27328 KB Output is correct
61 Correct 114 ms 29576 KB Output is correct
62 Correct 144 ms 35560 KB Output is correct
63 Correct 136 ms 29508 KB Output is correct
64 Correct 137 ms 33756 KB Output is correct
65 Correct 97 ms 25024 KB Output is correct
66 Correct 112 ms 27072 KB Output is correct
67 Correct 131 ms 31684 KB Output is correct
68 Correct 150 ms 35384 KB Output is correct
69 Correct 1562 ms 192668 KB Output is correct
70 Execution timed out 2050 ms 218816 KB Time limit exceeded
71 Halted 0 ms 0 KB -