oj.uz

Submission #930544

# Submission time Handle Problem Language Result Execution time Memory
930544 2024-02-20T05:59:16 Z Ghulam_Junaid Joker (BOI20_joker) C++17
14 / 100
 101 ms 38460 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[2005];
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 <= m; 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 2 ms 12636 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Correct 3 ms 12636 KB Output is correct
4 Correct 2 ms 12636 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 4 ms 12636 KB Output is correct
7 Correct 3 ms 12636 KB Output is correct
8 Correct 4 ms 12632 KB Output is correct
9 Correct 3 ms 12636 KB Output is correct
10 Correct 3 ms 12636 KB Output is correct
11 Correct 3 ms 12636 KB Output is correct
12 Correct 3 ms 12636 KB Output is correct
13 Correct 3 ms 12636 KB Output is correct
14 Correct 3 ms 12636 KB Output is correct
15 Correct 4 ms 12740 KB Output is correct
16 Correct 3 ms 12780 KB Output is correct
17 Correct 3 ms 12636 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 3 ms 12636 KB Output is correct
20 Correct 3 ms 12636 KB Output is correct
21 Correct 3 ms 12636 KB Output is correct
22 Correct 3 ms 12636 KB Output is correct
23 Correct 3 ms 12636 KB Output is correct
24 Correct 3 ms 12636 KB Output is correct
25 Correct 3 ms 12636 KB Output is correct
26 Correct 4 ms 12636 KB Output is correct
27 Correct 3 ms 12636 KB Output is correct
28 Correct 4 ms 12632 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12636 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Correct 3 ms 12636 KB Output is correct
4 Correct 2 ms 12636 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 4 ms 12636 KB Output is correct
7 Correct 3 ms 12636 KB Output is correct
8 Correct 4 ms 12632 KB Output is correct
9 Correct 3 ms 12636 KB Output is correct
10 Correct 3 ms 12636 KB Output is correct
11 Correct 3 ms 12636 KB Output is correct
12 Correct 3 ms 12636 KB Output is correct
13 Correct 3 ms 12636 KB Output is correct
14 Correct 3 ms 12636 KB Output is correct
15 Correct 4 ms 12740 KB Output is correct
16 Correct 3 ms 12780 KB Output is correct
17 Correct 3 ms 12636 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 3 ms 12636 KB Output is correct
20 Correct 3 ms 12636 KB Output is correct
21 Correct 3 ms 12636 KB Output is correct
22 Correct 3 ms 12636 KB Output is correct
23 Correct 3 ms 12636 KB Output is correct
24 Correct 3 ms 12636 KB Output is correct
25 Correct 3 ms 12636 KB Output is correct
26 Correct 4 ms 12636 KB Output is correct
27 Correct 3 ms 12636 KB Output is correct
28 Correct 4 ms 12632 KB Output is correct
29 Correct 21 ms 12892 KB Output is correct
30 Correct 35 ms 13148 KB Output is correct
31 Correct 35 ms 13144 KB Output is correct
32 Correct 26 ms 13024 KB Output is correct
33 Correct 19 ms 12888 KB Output is correct
34 Correct 39 ms 13148 KB Output is correct
35 Correct 41 ms 13148 KB Output is correct
36 Correct 27 ms 13148 KB Output is correct
37 Correct 51 ms 15096 KB Output is correct
38 Correct 48 ms 14172 KB Output is correct
39 Correct 36 ms 13148 KB Output is correct
40 Correct 27 ms 12888 KB Output is correct
41 Correct 31 ms 12892 KB Output is correct
42 Correct 27 ms 12892 KB Output is correct
43 Correct 22 ms 12980 KB Output is correct
44 Correct 28 ms 12888 KB Output is correct
45 Correct 41 ms 13144 KB Output is correct
46 Correct 46 ms 13148 KB Output is correct
47 Correct 23 ms 12892 KB Output is correct
48 Correct 30 ms 13148 KB Output is correct
49 Correct 31 ms 13148 KB Output is correct
50 Correct 40 ms 13148 KB Output is correct
51 Correct 21 ms 13000 KB Output is correct
52 Correct 25 ms 12892 KB Output is correct
53 Correct 31 ms 13160 KB Output is correct
54 Correct 40 ms 13144 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12636 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Runtime error 101 ms 38460 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12636 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Correct 3 ms 12636 KB Output is correct
4 Correct 2 ms 12636 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 4 ms 12636 KB Output is correct
7 Correct 3 ms 12636 KB Output is correct
8 Correct 4 ms 12632 KB Output is correct
9 Correct 3 ms 12636 KB Output is correct
10 Correct 3 ms 12636 KB Output is correct
11 Correct 3 ms 12636 KB Output is correct
12 Correct 3 ms 12636 KB Output is correct
13 Correct 3 ms 12636 KB Output is correct
14 Correct 3 ms 12636 KB Output is correct
15 Correct 4 ms 12740 KB Output is correct
16 Correct 3 ms 12780 KB Output is correct
17 Correct 3 ms 12636 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 3 ms 12636 KB Output is correct
20 Correct 3 ms 12636 KB Output is correct
21 Correct 3 ms 12636 KB Output is correct
22 Correct 3 ms 12636 KB Output is correct
23 Correct 3 ms 12636 KB Output is correct
24 Correct 3 ms 12636 KB Output is correct
25 Correct 3 ms 12636 KB Output is correct
26 Correct 4 ms 12636 KB Output is correct
27 Correct 3 ms 12636 KB Output is correct
28 Correct 4 ms 12632 KB Output is correct
29 Runtime error 101 ms 38460 KB Execution killed with signal 11
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12636 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Correct 3 ms 12636 KB Output is correct
4 Correct 2 ms 12636 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 4 ms 12636 KB Output is correct
7 Correct 3 ms 12636 KB Output is correct
8 Correct 4 ms 12632 KB Output is correct
9 Correct 3 ms 12636 KB Output is correct
10 Correct 3 ms 12636 KB Output is correct
11 Correct 3 ms 12636 KB Output is correct
12 Correct 3 ms 12636 KB Output is correct
13 Correct 3 ms 12636 KB Output is correct
14 Correct 3 ms 12636 KB Output is correct
15 Correct 4 ms 12740 KB Output is correct
16 Correct 3 ms 12780 KB Output is correct
17 Correct 3 ms 12636 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 3 ms 12636 KB Output is correct
20 Correct 3 ms 12636 KB Output is correct
21 Correct 3 ms 12636 KB Output is correct
22 Correct 3 ms 12636 KB Output is correct
23 Correct 3 ms 12636 KB Output is correct
24 Correct 3 ms 12636 KB Output is correct
25 Correct 3 ms 12636 KB Output is correct
26 Correct 4 ms 12636 KB Output is correct
27 Correct 3 ms 12636 KB Output is correct
28 Correct 4 ms 12632 KB Output is correct
29 Correct 21 ms 12892 KB Output is correct
30 Correct 35 ms 13148 KB Output is correct
31 Correct 35 ms 13144 KB Output is correct
32 Correct 26 ms 13024 KB Output is correct
33 Correct 19 ms 12888 KB Output is correct
34 Correct 39 ms 13148 KB Output is correct
35 Correct 41 ms 13148 KB Output is correct
36 Correct 27 ms 13148 KB Output is correct
37 Correct 51 ms 15096 KB Output is correct
38 Correct 48 ms 14172 KB Output is correct
39 Correct 36 ms 13148 KB Output is correct
40 Correct 27 ms 12888 KB Output is correct
41 Correct 31 ms 12892 KB Output is correct
42 Correct 27 ms 12892 KB Output is correct
43 Correct 22 ms 12980 KB Output is correct
44 Correct 28 ms 12888 KB Output is correct
45 Correct 41 ms 13144 KB Output is correct
46 Correct 46 ms 13148 KB Output is correct
47 Correct 23 ms 12892 KB Output is correct
48 Correct 30 ms 13148 KB Output is correct
49 Correct 31 ms 13148 KB Output is correct
50 Correct 40 ms 13148 KB Output is correct
51 Correct 21 ms 13000 KB Output is correct
52 Correct 25 ms 12892 KB Output is correct
53 Correct 31 ms 13160 KB Output is correct
54 Correct 40 ms 13144 KB Output is correct
55 Runtime error 67 ms 34896 KB Execution killed with signal 11
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12636 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Correct 3 ms 12636 KB Output is correct
4 Correct 2 ms 12636 KB Output is correct
5 Correct 2 ms 12636 KB Output is correct
6 Correct 4 ms 12636 KB Output is correct
7 Correct 3 ms 12636 KB Output is correct
8 Correct 4 ms 12632 KB Output is correct
9 Correct 3 ms 12636 KB Output is correct
10 Correct 3 ms 12636 KB Output is correct
11 Correct 3 ms 12636 KB Output is correct
12 Correct 3 ms 12636 KB Output is correct
13 Correct 3 ms 12636 KB Output is correct
14 Correct 3 ms 12636 KB Output is correct
15 Correct 4 ms 12740 KB Output is correct
16 Correct 3 ms 12780 KB Output is correct
17 Correct 3 ms 12636 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 3 ms 12636 KB Output is correct
20 Correct 3 ms 12636 KB Output is correct
21 Correct 3 ms 12636 KB Output is correct
22 Correct 3 ms 12636 KB Output is correct
23 Correct 3 ms 12636 KB Output is correct
24 Correct 3 ms 12636 KB Output is correct
25 Correct 3 ms 12636 KB Output is correct
26 Correct 4 ms 12636 KB Output is correct
27 Correct 3 ms 12636 KB Output is correct
28 Correct 4 ms 12632 KB Output is correct
29 Correct 21 ms 12892 KB Output is correct
30 Correct 35 ms 13148 KB Output is correct
31 Correct 35 ms 13144 KB Output is correct
32 Correct 26 ms 13024 KB Output is correct
33 Correct 19 ms 12888 KB Output is correct
34 Correct 39 ms 13148 KB Output is correct
35 Correct 41 ms 13148 KB Output is correct
36 Correct 27 ms 13148 KB Output is correct
37 Correct 51 ms 15096 KB Output is correct
38 Correct 48 ms 14172 KB Output is correct
39 Correct 36 ms 13148 KB Output is correct
40 Correct 27 ms 12888 KB Output is correct
41 Correct 31 ms 12892 KB Output is correct
42 Correct 27 ms 12892 KB Output is correct
43 Correct 22 ms 12980 KB Output is correct
44 Correct 28 ms 12888 KB Output is correct
45 Correct 41 ms 13144 KB Output is correct
46 Correct 46 ms 13148 KB Output is correct
47 Correct 23 ms 12892 KB Output is correct
48 Correct 30 ms 13148 KB Output is correct
49 Correct 31 ms 13148 KB Output is correct
50 Correct 40 ms 13148 KB Output is correct
51 Correct 21 ms 13000 KB Output is correct
52 Correct 25 ms 12892 KB Output is correct
53 Correct 31 ms 13160 KB Output is correct
54 Correct 40 ms 13144 KB Output is correct
55 Runtime error 101 ms 38460 KB Execution killed with signal 11
56 Halted 0 ms 0 KB -