oj.uz

Submission #599369

# Submission time Handle Problem Language Result Execution time Memory
599369 2022-07-19T13:03:15 Z OttoTheDino Joker (BOI20_joker) C++17
14 / 100
 2000 ms 8248 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];

//sqrt decomposition plus ackermann-fast dsu might pass

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]); 
    ii ans = {res.fi, res.se^tp[u]};
    tp[u] ^= res.se^tp[res.fi];
    par[u] = res.fi;
    return {ans};
}

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 3 ms 4948 KB Output is correct
2 Correct 5 ms 5024 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 4 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 5028 KB Output is correct
7 Correct 3 ms 5024 KB Output is correct
8 Correct 4 ms 5024 KB Output is correct
9 Correct 3 ms 5016 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 4 ms 5036 KB Output is correct
12 Correct 4 ms 4948 KB Output is correct
13 Correct 3 ms 5020 KB Output is correct
14 Correct 4 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 3 ms 5020 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 5016 KB Output is correct
21 Correct 4 ms 4948 KB Output is correct
22 Correct 4 ms 5020 KB Output is correct
23 Correct 3 ms 5028 KB Output is correct
24 Correct 4 ms 5020 KB Output is correct
25 Correct 3 ms 5028 KB Output is correct
26 Correct 4 ms 4948 KB Output is correct
27 Correct 4 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 3 ms 4948 KB Output is correct
2 Correct 5 ms 5024 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 4 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 5028 KB Output is correct
7 Correct 3 ms 5024 KB Output is correct
8 Correct 4 ms 5024 KB Output is correct
9 Correct 3 ms 5016 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 4 ms 5036 KB Output is correct
12 Correct 4 ms 4948 KB Output is correct
13 Correct 3 ms 5020 KB Output is correct
14 Correct 4 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 3 ms 5020 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 5016 KB Output is correct
21 Correct 4 ms 4948 KB Output is correct
22 Correct 4 ms 5020 KB Output is correct
23 Correct 3 ms 5028 KB Output is correct
24 Correct 4 ms 5020 KB Output is correct
25 Correct 3 ms 5028 KB Output is correct
26 Correct 4 ms 4948 KB Output is correct
27 Correct 4 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 54 ms 5080 KB Output is correct
30 Correct 59 ms 5084 KB Output is correct
31 Correct 52 ms 5100 KB Output is correct
32 Correct 38 ms 5088 KB Output is correct
33 Correct 21 ms 5084 KB Output is correct
34 Correct 42 ms 5076 KB Output is correct
35 Correct 68 ms 5036 KB Output is correct
36 Correct 53 ms 5036 KB Output is correct
37 Correct 101 ms 5036 KB Output is correct
38 Correct 133 ms 5080 KB Output is correct
39 Correct 63 ms 5088 KB Output is correct
40 Correct 51 ms 5076 KB Output is correct
41 Correct 55 ms 5080 KB Output is correct
42 Correct 53 ms 5076 KB Output is correct
43 Correct 52 ms 5088 KB Output is correct
44 Correct 56 ms 5092 KB Output is correct
45 Correct 53 ms 5100 KB Output is correct
46 Correct 66 ms 5108 KB Output is correct
47 Correct 54 ms 5092 KB Output is correct
48 Correct 66 ms 5076 KB Output is correct
49 Correct 72 ms 5084 KB Output is correct
50 Correct 64 ms 5088 KB Output is correct
51 Correct 52 ms 5092 KB Output is correct
52 Correct 57 ms 5076 KB Output is correct
53 Correct 56 ms 5084 KB Output is correct
54 Correct 68 ms 5084 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 5 ms 5024 KB Output is correct
3 Execution timed out 2047 ms 7976 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 5 ms 5024 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 4 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 5028 KB Output is correct
7 Correct 3 ms 5024 KB Output is correct
8 Correct 4 ms 5024 KB Output is correct
9 Correct 3 ms 5016 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 4 ms 5036 KB Output is correct
12 Correct 4 ms 4948 KB Output is correct
13 Correct 3 ms 5020 KB Output is correct
14 Correct 4 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 3 ms 5020 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 5016 KB Output is correct
21 Correct 4 ms 4948 KB Output is correct
22 Correct 4 ms 5020 KB Output is correct
23 Correct 3 ms 5028 KB Output is correct
24 Correct 4 ms 5020 KB Output is correct
25 Correct 3 ms 5028 KB Output is correct
26 Correct 4 ms 4948 KB Output is correct
27 Correct 4 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Execution timed out 2047 ms 7976 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 5 ms 5024 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 4 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 5028 KB Output is correct
7 Correct 3 ms 5024 KB Output is correct
8 Correct 4 ms 5024 KB Output is correct
9 Correct 3 ms 5016 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 4 ms 5036 KB Output is correct
12 Correct 4 ms 4948 KB Output is correct
13 Correct 3 ms 5020 KB Output is correct
14 Correct 4 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 3 ms 5020 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 5016 KB Output is correct
21 Correct 4 ms 4948 KB Output is correct
22 Correct 4 ms 5020 KB Output is correct
23 Correct 3 ms 5028 KB Output is correct
24 Correct 4 ms 5020 KB Output is correct
25 Correct 3 ms 5028 KB Output is correct
26 Correct 4 ms 4948 KB Output is correct
27 Correct 4 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 54 ms 5080 KB Output is correct
30 Correct 59 ms 5084 KB Output is correct
31 Correct 52 ms 5100 KB Output is correct
32 Correct 38 ms 5088 KB Output is correct
33 Correct 21 ms 5084 KB Output is correct
34 Correct 42 ms 5076 KB Output is correct
35 Correct 68 ms 5036 KB Output is correct
36 Correct 53 ms 5036 KB Output is correct
37 Correct 101 ms 5036 KB Output is correct
38 Correct 133 ms 5080 KB Output is correct
39 Correct 63 ms 5088 KB Output is correct
40 Correct 51 ms 5076 KB Output is correct
41 Correct 55 ms 5080 KB Output is correct
42 Correct 53 ms 5076 KB Output is correct
43 Correct 52 ms 5088 KB Output is correct
44 Correct 56 ms 5092 KB Output is correct
45 Correct 53 ms 5100 KB Output is correct
46 Correct 66 ms 5108 KB Output is correct
47 Correct 54 ms 5092 KB Output is correct
48 Correct 66 ms 5076 KB Output is correct
49 Correct 72 ms 5084 KB Output is correct
50 Correct 64 ms 5088 KB Output is correct
51 Correct 52 ms 5092 KB Output is correct
52 Correct 57 ms 5076 KB Output is correct
53 Correct 56 ms 5084 KB Output is correct
54 Correct 68 ms 5084 KB Output is correct
55 Execution timed out 2096 ms 8248 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 5 ms 5024 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 4 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 5028 KB Output is correct
7 Correct 3 ms 5024 KB Output is correct
8 Correct 4 ms 5024 KB Output is correct
9 Correct 3 ms 5016 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 4 ms 5036 KB Output is correct
12 Correct 4 ms 4948 KB Output is correct
13 Correct 3 ms 5020 KB Output is correct
14 Correct 4 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 3 ms 5020 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 5016 KB Output is correct
21 Correct 4 ms 4948 KB Output is correct
22 Correct 4 ms 5020 KB Output is correct
23 Correct 3 ms 5028 KB Output is correct
24 Correct 4 ms 5020 KB Output is correct
25 Correct 3 ms 5028 KB Output is correct
26 Correct 4 ms 4948 KB Output is correct
27 Correct 4 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 54 ms 5080 KB Output is correct
30 Correct 59 ms 5084 KB Output is correct
31 Correct 52 ms 5100 KB Output is correct
32 Correct 38 ms 5088 KB Output is correct
33 Correct 21 ms 5084 KB Output is correct
34 Correct 42 ms 5076 KB Output is correct
35 Correct 68 ms 5036 KB Output is correct
36 Correct 53 ms 5036 KB Output is correct
37 Correct 101 ms 5036 KB Output is correct
38 Correct 133 ms 5080 KB Output is correct
39 Correct 63 ms 5088 KB Output is correct
40 Correct 51 ms 5076 KB Output is correct
41 Correct 55 ms 5080 KB Output is correct
42 Correct 53 ms 5076 KB Output is correct
43 Correct 52 ms 5088 KB Output is correct
44 Correct 56 ms 5092 KB Output is correct
45 Correct 53 ms 5100 KB Output is correct
46 Correct 66 ms 5108 KB Output is correct
47 Correct 54 ms 5092 KB Output is correct
48 Correct 66 ms 5076 KB Output is correct
49 Correct 72 ms 5084 KB Output is correct
50 Correct 64 ms 5088 KB Output is correct
51 Correct 52 ms 5092 KB Output is correct
52 Correct 57 ms 5076 KB Output is correct
53 Correct 56 ms 5084 KB Output is correct
54 Correct 68 ms 5084 KB Output is correct
55 Execution timed out 2047 ms 7976 KB Time limit exceeded
56 Halted 0 ms 0 KB -