oj.uz

Submission #858298

# Submission time Handle Problem Language Result Execution time Memory
858298 2023-10-08T03:45:49 Z Trisanu_Das Joker (BOI20_joker) C++17
39 / 100
 2000 ms 26784 KB 
#include<bits/stdc++.h>
using namespace std;
 
vector<int> adj[200005];
vector<pair<int, int> > arr[200005];
int color[200005], ans[200005], a[200005], b[200005], n, m, q;
 
int dfs(int u, int c) {
    if(color[u]) {
        if(c == color[u]) return 0;
        else return 1;
    }
    color[u] = c;
    for(auto v : adj[u]) if(dfs(v, 3 - c)) return 1;
    return 0;
}
 
bool check(int l, int r) {
    memset(color, 0, sizeof color);
    for(int i = 1; i <= n; i++) adj[i].clear();
    for(int i = 0; i < l; i++) adj[a[i]].push_back(b[i]), adj[b[i]].push_back(a[i]);
    for(int i = r + 1; i < m; i++) adj[a[i]].push_back(b[i]), adj[b[i]].push_back(a[i]);
    for(int i = 0; i < n; i++) if(!color[i]) if(dfs(i, 1)) return 1;
    return 0;
}
 
int main() {
    cin.sync_with_stdio(false); cin.tie(NULL);
    cin >> n >> m >> q;
    for(int i = 0; i < m; i++) cin >> a[i] >> b[i];
    for(int e = 0; e < q; e++) {
        int l, r;
        cin >> l >> r;
        arr[l - 1].push_back({r - 1, e});
    }
    for(int i = 0; i < m; i++) {
        sort(arr[i].begin(), arr[i].end());
        int l = 0, r = arr[i].size();
        while(l < r) {
            int mid = l + r >> 1;
            if(check(i, arr[i][mid].first)) l = mid + 1;
            else r = mid;
        }
        for(int j = 0; j < l; j++) ans[arr[i][j].second] = 1;
        for(int j = l; j < arr[i].size(); j++) ans[arr[i][j].second] = 0;
    }
    for(int i = 0; i < q; i++) cout << (ans[i] ? "YES\n":"NO\n");
}

Compilation message

Joker.cpp: In function 'int main()':
Joker.cpp:40:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   40 |             int mid = l + r >> 1;
      |                       ~~^~~
Joker.cpp:45:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         for(int j = l; j < arr[i].size(); j++) ans[arr[i][j].second] = 0;
      |                        ~~^~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12632 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 12804 KB Output is correct
5 Correct 3 ms 12636 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 4 ms 12804 KB Output is correct
8 Correct 4 ms 12648 KB Output is correct
9 Correct 4 ms 12636 KB Output is correct
10 Correct 4 ms 12636 KB Output is correct
11 Correct 5 ms 12636 KB Output is correct
12 Correct 6 ms 12636 KB Output is correct
13 Correct 4 ms 12636 KB Output is correct
14 Correct 5 ms 12636 KB Output is correct
15 Correct 5 ms 12824 KB Output is correct
16 Correct 4 ms 12636 KB Output is correct
17 Correct 4 ms 12636 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 4 ms 12636 KB Output is correct
20 Correct 4 ms 12636 KB Output is correct
21 Correct 4 ms 12636 KB Output is correct
22 Correct 4 ms 12636 KB Output is correct
23 Correct 4 ms 12636 KB Output is correct
24 Correct 4 ms 12636 KB Output is correct
25 Correct 4 ms 12808 KB Output is correct
26 Correct 4 ms 12816 KB Output is correct
27 Correct 4 ms 12636 KB Output is correct
28 Correct 5 ms 12820 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12632 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 12804 KB Output is correct
5 Correct 3 ms 12636 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 4 ms 12804 KB Output is correct
8 Correct 4 ms 12648 KB Output is correct
9 Correct 4 ms 12636 KB Output is correct
10 Correct 4 ms 12636 KB Output is correct
11 Correct 5 ms 12636 KB Output is correct
12 Correct 6 ms 12636 KB Output is correct
13 Correct 4 ms 12636 KB Output is correct
14 Correct 5 ms 12636 KB Output is correct
15 Correct 5 ms 12824 KB Output is correct
16 Correct 4 ms 12636 KB Output is correct
17 Correct 4 ms 12636 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 4 ms 12636 KB Output is correct
20 Correct 4 ms 12636 KB Output is correct
21 Correct 4 ms 12636 KB Output is correct
22 Correct 4 ms 12636 KB Output is correct
23 Correct 4 ms 12636 KB Output is correct
24 Correct 4 ms 12636 KB Output is correct
25 Correct 4 ms 12808 KB Output is correct
26 Correct 4 ms 12816 KB Output is correct
27 Correct 4 ms 12636 KB Output is correct
28 Correct 5 ms 12820 KB Output is correct
29 Correct 56 ms 12632 KB Output is correct
30 Correct 48 ms 12892 KB Output is correct
31 Correct 41 ms 12892 KB Output is correct
32 Correct 31 ms 12812 KB Output is correct
33 Correct 29 ms 12892 KB Output is correct
34 Correct 48 ms 13148 KB Output is correct
35 Correct 53 ms 12892 KB Output is correct
36 Correct 37 ms 12888 KB Output is correct
37 Correct 67 ms 12892 KB Output is correct
38 Correct 71 ms 12892 KB Output is correct
39 Correct 52 ms 12892 KB Output is correct
40 Correct 39 ms 12888 KB Output is correct
41 Correct 36 ms 12892 KB Output is correct
42 Correct 36 ms 12892 KB Output is correct
43 Correct 29 ms 13140 KB Output is correct
44 Correct 30 ms 12892 KB Output is correct
45 Correct 33 ms 12912 KB Output is correct
46 Correct 38 ms 12892 KB Output is correct
47 Correct 39 ms 13148 KB Output is correct
48 Correct 37 ms 12892 KB Output is correct
49 Correct 42 ms 12892 KB Output is correct
50 Correct 48 ms 12860 KB Output is correct
51 Correct 33 ms 12892 KB Output is correct
52 Correct 36 ms 12720 KB Output is correct
53 Correct 40 ms 12892 KB Output is correct
54 Correct 50 ms 12892 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12632 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Correct 114 ms 22980 KB Output is correct
4 Correct 197 ms 26564 KB Output is correct
5 Correct 95 ms 20680 KB Output is correct
6 Correct 119 ms 23072 KB Output is correct
7 Correct 118 ms 22472 KB Output is correct
8 Correct 111 ms 23496 KB Output is correct
9 Correct 127 ms 23944 KB Output is correct
10 Correct 139 ms 24716 KB Output is correct
11 Correct 122 ms 22200 KB Output is correct
12 Correct 146 ms 23312 KB Output is correct
13 Correct 98 ms 21768 KB Output is correct
14 Correct 125 ms 22980 KB Output is correct
15 Correct 142 ms 23236 KB Output is correct
16 Correct 160 ms 23692 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12632 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 12804 KB Output is correct
5 Correct 3 ms 12636 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 4 ms 12804 KB Output is correct
8 Correct 4 ms 12648 KB Output is correct
9 Correct 4 ms 12636 KB Output is correct
10 Correct 4 ms 12636 KB Output is correct
11 Correct 5 ms 12636 KB Output is correct
12 Correct 6 ms 12636 KB Output is correct
13 Correct 4 ms 12636 KB Output is correct
14 Correct 5 ms 12636 KB Output is correct
15 Correct 5 ms 12824 KB Output is correct
16 Correct 4 ms 12636 KB Output is correct
17 Correct 4 ms 12636 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 4 ms 12636 KB Output is correct
20 Correct 4 ms 12636 KB Output is correct
21 Correct 4 ms 12636 KB Output is correct
22 Correct 4 ms 12636 KB Output is correct
23 Correct 4 ms 12636 KB Output is correct
24 Correct 4 ms 12636 KB Output is correct
25 Correct 4 ms 12808 KB Output is correct
26 Correct 4 ms 12816 KB Output is correct
27 Correct 4 ms 12636 KB Output is correct
28 Correct 5 ms 12820 KB Output is correct
29 Correct 114 ms 22980 KB Output is correct
30 Correct 197 ms 26564 KB Output is correct
31 Correct 95 ms 20680 KB Output is correct
32 Correct 119 ms 23072 KB Output is correct
33 Correct 118 ms 22472 KB Output is correct
34 Correct 111 ms 23496 KB Output is correct
35 Correct 127 ms 23944 KB Output is correct
36 Correct 139 ms 24716 KB Output is correct
37 Correct 122 ms 22200 KB Output is correct
38 Correct 146 ms 23312 KB Output is correct
39 Correct 98 ms 21768 KB Output is correct
40 Correct 125 ms 22980 KB Output is correct
41 Correct 142 ms 23236 KB Output is correct
42 Correct 160 ms 23692 KB Output is correct
43 Execution timed out 2011 ms 26784 KB Time limit exceeded
44 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12632 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 12804 KB Output is correct
5 Correct 3 ms 12636 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 4 ms 12804 KB Output is correct
8 Correct 4 ms 12648 KB Output is correct
9 Correct 4 ms 12636 KB Output is correct
10 Correct 4 ms 12636 KB Output is correct
11 Correct 5 ms 12636 KB Output is correct
12 Correct 6 ms 12636 KB Output is correct
13 Correct 4 ms 12636 KB Output is correct
14 Correct 5 ms 12636 KB Output is correct
15 Correct 5 ms 12824 KB Output is correct
16 Correct 4 ms 12636 KB Output is correct
17 Correct 4 ms 12636 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 4 ms 12636 KB Output is correct
20 Correct 4 ms 12636 KB Output is correct
21 Correct 4 ms 12636 KB Output is correct
22 Correct 4 ms 12636 KB Output is correct
23 Correct 4 ms 12636 KB Output is correct
24 Correct 4 ms 12636 KB Output is correct
25 Correct 4 ms 12808 KB Output is correct
26 Correct 4 ms 12816 KB Output is correct
27 Correct 4 ms 12636 KB Output is correct
28 Correct 5 ms 12820 KB Output is correct
29 Correct 56 ms 12632 KB Output is correct
30 Correct 48 ms 12892 KB Output is correct
31 Correct 41 ms 12892 KB Output is correct
32 Correct 31 ms 12812 KB Output is correct
33 Correct 29 ms 12892 KB Output is correct
34 Correct 48 ms 13148 KB Output is correct
35 Correct 53 ms 12892 KB Output is correct
36 Correct 37 ms 12888 KB Output is correct
37 Correct 67 ms 12892 KB Output is correct
38 Correct 71 ms 12892 KB Output is correct
39 Correct 52 ms 12892 KB Output is correct
40 Correct 39 ms 12888 KB Output is correct
41 Correct 36 ms 12892 KB Output is correct
42 Correct 36 ms 12892 KB Output is correct
43 Correct 29 ms 13140 KB Output is correct
44 Correct 30 ms 12892 KB Output is correct
45 Correct 33 ms 12912 KB Output is correct
46 Correct 38 ms 12892 KB Output is correct
47 Correct 39 ms 13148 KB Output is correct
48 Correct 37 ms 12892 KB Output is correct
49 Correct 42 ms 12892 KB Output is correct
50 Correct 48 ms 12860 KB Output is correct
51 Correct 33 ms 12892 KB Output is correct
52 Correct 36 ms 12720 KB Output is correct
53 Correct 40 ms 12892 KB Output is correct
54 Correct 50 ms 12892 KB Output is correct
55 Execution timed out 2043 ms 19572 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12632 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 12804 KB Output is correct
5 Correct 3 ms 12636 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 4 ms 12804 KB Output is correct
8 Correct 4 ms 12648 KB Output is correct
9 Correct 4 ms 12636 KB Output is correct
10 Correct 4 ms 12636 KB Output is correct
11 Correct 5 ms 12636 KB Output is correct
12 Correct 6 ms 12636 KB Output is correct
13 Correct 4 ms 12636 KB Output is correct
14 Correct 5 ms 12636 KB Output is correct
15 Correct 5 ms 12824 KB Output is correct
16 Correct 4 ms 12636 KB Output is correct
17 Correct 4 ms 12636 KB Output is correct
18 Correct 4 ms 12636 KB Output is correct
19 Correct 4 ms 12636 KB Output is correct
20 Correct 4 ms 12636 KB Output is correct
21 Correct 4 ms 12636 KB Output is correct
22 Correct 4 ms 12636 KB Output is correct
23 Correct 4 ms 12636 KB Output is correct
24 Correct 4 ms 12636 KB Output is correct
25 Correct 4 ms 12808 KB Output is correct
26 Correct 4 ms 12816 KB Output is correct
27 Correct 4 ms 12636 KB Output is correct
28 Correct 5 ms 12820 KB Output is correct
29 Correct 56 ms 12632 KB Output is correct
30 Correct 48 ms 12892 KB Output is correct
31 Correct 41 ms 12892 KB Output is correct
32 Correct 31 ms 12812 KB Output is correct
33 Correct 29 ms 12892 KB Output is correct
34 Correct 48 ms 13148 KB Output is correct
35 Correct 53 ms 12892 KB Output is correct
36 Correct 37 ms 12888 KB Output is correct
37 Correct 67 ms 12892 KB Output is correct
38 Correct 71 ms 12892 KB Output is correct
39 Correct 52 ms 12892 KB Output is correct
40 Correct 39 ms 12888 KB Output is correct
41 Correct 36 ms 12892 KB Output is correct
42 Correct 36 ms 12892 KB Output is correct
43 Correct 29 ms 13140 KB Output is correct
44 Correct 30 ms 12892 KB Output is correct
45 Correct 33 ms 12912 KB Output is correct
46 Correct 38 ms 12892 KB Output is correct
47 Correct 39 ms 13148 KB Output is correct
48 Correct 37 ms 12892 KB Output is correct
49 Correct 42 ms 12892 KB Output is correct
50 Correct 48 ms 12860 KB Output is correct
51 Correct 33 ms 12892 KB Output is correct
52 Correct 36 ms 12720 KB Output is correct
53 Correct 40 ms 12892 KB Output is correct
54 Correct 50 ms 12892 KB Output is correct
55 Correct 114 ms 22980 KB Output is correct
56 Correct 197 ms 26564 KB Output is correct
57 Correct 95 ms 20680 KB Output is correct
58 Correct 119 ms 23072 KB Output is correct
59 Correct 118 ms 22472 KB Output is correct
60 Correct 111 ms 23496 KB Output is correct
61 Correct 127 ms 23944 KB Output is correct
62 Correct 139 ms 24716 KB Output is correct
63 Correct 122 ms 22200 KB Output is correct
64 Correct 146 ms 23312 KB Output is correct
65 Correct 98 ms 21768 KB Output is correct
66 Correct 125 ms 22980 KB Output is correct
67 Correct 142 ms 23236 KB Output is correct
68 Correct 160 ms 23692 KB Output is correct
69 Execution timed out 2011 ms 26784 KB Time limit exceeded
70 Halted 0 ms 0 KB -