oj.uz

Submission #599351

# Submission time Handle Problem Language Result Execution time Memory
599351 2022-07-19T12:51:58 Z OttoTheDino Joker (BOI20_joker) C++17
14 / 100
 2000 ms 7764 KB 
#include<bits/stdc++.h>
using namespace std;

#define rep(i,s,e)                          for (int i = s; i <= e; ++i)
#define rrep(i,s,e)                         for (int i = s; i >= e; --i)
#define fi                                  first
#define se                                  second
#define pb                                  push_back
typedef vector<int> vi;
typedef pair<int,int> ii;

const int mx = 2e5;
vi adj[mx+1];

int par[mx+1], h[mx+1], tp[mx+1];

ii get_par (int u) {
    if (u==par[u]) return {u, tp[u]};
    ii res = get_par (par[u]); 
    return {res.fi, res.se^tp[u]};
}

void merge (int u, int v) {
    ii paru = get_par(u), parv = get_par(v);
    if (h[paru.fi]<h[parv.fi]) swap(paru, parv);
    h[paru.fi] += h[paru.fi]==h[parv.fi];
    par[parv.fi] = paru.fi; 
    tp[parv.fi] ^= parv.se==paru.se;
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n, m, q; cin >>n >> m >> q;

    ii e[m+1];
    rep (i,1,m) cin >> e[i].fi >> e[i].se;

    while (q--) {
        int l, r; cin >> l >> r;
        bool got = 0;
        rep (j,1,n) {
            par[j] = j;
            h[j] = 1;
            tp[j] = 0;
        }
        rep (j,1,l-1) {
            ii parj = get_par(e[j].fi), parv = get_par(e[j].se);
            if (parj.fi==parv.fi) {
                got |= (parj.se==parv.se);
                if (got) break;
            }
            else merge(e[j].fi,e[j].se);
        }
        rrep (j,m,r+1) {
            ii parj = get_par(e[j].fi), parv = get_par(e[j].se);
            if (parj.fi==parv.fi) {
                got |= (parj.se==parv.se);
                if (got) break;
            }
            else merge(e[j].fi,e[j].se);
        }
        if (got) cout << "YES\n";
        else cout << "NO\n";
    }

    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 5076 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 3 ms 4948 KB Output is correct
24 Correct 3 ms 4980 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 3 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 5076 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 3 ms 4948 KB Output is correct
24 Correct 3 ms 4980 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 3 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 49 ms 5044 KB Output is correct
30 Correct 47 ms 5068 KB Output is correct
31 Correct 44 ms 4948 KB Output is correct
32 Correct 28 ms 5056 KB Output is correct
33 Correct 20 ms 5052 KB Output is correct
34 Correct 36 ms 5052 KB Output is correct
35 Correct 56 ms 5064 KB Output is correct
36 Correct 40 ms 5052 KB Output is correct
37 Correct 77 ms 4948 KB Output is correct
38 Correct 95 ms 5052 KB Output is correct
39 Correct 50 ms 5064 KB Output is correct
40 Correct 39 ms 5056 KB Output is correct
41 Correct 41 ms 5056 KB Output is correct
42 Correct 46 ms 5060 KB Output is correct
43 Correct 46 ms 5052 KB Output is correct
44 Correct 56 ms 5052 KB Output is correct
45 Correct 46 ms 5060 KB Output is correct
46 Correct 55 ms 5068 KB Output is correct
47 Correct 45 ms 5068 KB Output is correct
48 Correct 51 ms 5056 KB Output is correct
49 Correct 53 ms 5168 KB Output is correct
50 Correct 50 ms 5064 KB Output is correct
51 Correct 54 ms 5060 KB Output is correct
52 Correct 49 ms 5056 KB Output is correct
53 Correct 49 ms 5060 KB Output is correct
54 Correct 53 ms 4948 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Execution timed out 2074 ms 7764 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 5076 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 3 ms 4948 KB Output is correct
24 Correct 3 ms 4980 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 3 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Execution timed out 2074 ms 7764 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 5076 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 3 ms 4948 KB Output is correct
24 Correct 3 ms 4980 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 3 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 49 ms 5044 KB Output is correct
30 Correct 47 ms 5068 KB Output is correct
31 Correct 44 ms 4948 KB Output is correct
32 Correct 28 ms 5056 KB Output is correct
33 Correct 20 ms 5052 KB Output is correct
34 Correct 36 ms 5052 KB Output is correct
35 Correct 56 ms 5064 KB Output is correct
36 Correct 40 ms 5052 KB Output is correct
37 Correct 77 ms 4948 KB Output is correct
38 Correct 95 ms 5052 KB Output is correct
39 Correct 50 ms 5064 KB Output is correct
40 Correct 39 ms 5056 KB Output is correct
41 Correct 41 ms 5056 KB Output is correct
42 Correct 46 ms 5060 KB Output is correct
43 Correct 46 ms 5052 KB Output is correct
44 Correct 56 ms 5052 KB Output is correct
45 Correct 46 ms 5060 KB Output is correct
46 Correct 55 ms 5068 KB Output is correct
47 Correct 45 ms 5068 KB Output is correct
48 Correct 51 ms 5056 KB Output is correct
49 Correct 53 ms 5168 KB Output is correct
50 Correct 50 ms 5064 KB Output is correct
51 Correct 54 ms 5060 KB Output is correct
52 Correct 49 ms 5056 KB Output is correct
53 Correct 49 ms 5060 KB Output is correct
54 Correct 53 ms 4948 KB Output is correct
55 Execution timed out 2074 ms 7752 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 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 5076 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 3 ms 4948 KB Output is correct
24 Correct 3 ms 4980 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 3 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 49 ms 5044 KB Output is correct
30 Correct 47 ms 5068 KB Output is correct
31 Correct 44 ms 4948 KB Output is correct
32 Correct 28 ms 5056 KB Output is correct
33 Correct 20 ms 5052 KB Output is correct
34 Correct 36 ms 5052 KB Output is correct
35 Correct 56 ms 5064 KB Output is correct
36 Correct 40 ms 5052 KB Output is correct
37 Correct 77 ms 4948 KB Output is correct
38 Correct 95 ms 5052 KB Output is correct
39 Correct 50 ms 5064 KB Output is correct
40 Correct 39 ms 5056 KB Output is correct
41 Correct 41 ms 5056 KB Output is correct
42 Correct 46 ms 5060 KB Output is correct
43 Correct 46 ms 5052 KB Output is correct
44 Correct 56 ms 5052 KB Output is correct
45 Correct 46 ms 5060 KB Output is correct
46 Correct 55 ms 5068 KB Output is correct
47 Correct 45 ms 5068 KB Output is correct
48 Correct 51 ms 5056 KB Output is correct
49 Correct 53 ms 5168 KB Output is correct
50 Correct 50 ms 5064 KB Output is correct
51 Correct 54 ms 5060 KB Output is correct
52 Correct 49 ms 5056 KB Output is correct
53 Correct 49 ms 5060 KB Output is correct
54 Correct 53 ms 4948 KB Output is correct
55 Execution timed out 2074 ms 7764 KB Time limit exceeded
56 Halted 0 ms 0 KB -