oj.uz

Submission #256018

# Submission time Handle Problem Language Result Execution time Memory
256018 2020-08-02T08:20:46 Z 최은수(#5029) Joker (BOI20_joker) C++17
49 / 100
 2000 ms 6780 KB 
#include<iostream>
#include<vector>
#include<algorithm>
#define ep emplace
#define eb emplace_back
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
using namespace std;
typedef long long ll;
typedef pair<int,int>pi;
typedef pair<ll,ll>pl;
const int inf=1e9+7;
const ll INF=1e18+7;
int pa[200010],pr[200010];
inline pi par(int x)
{
    int y=0;
    int z=x;
    while(pa[z]!=0)
        y^=pr[z],z=pa[z];
    int w=y;
    while(pa[x]!=0)
    {
        int nx=pa[x];
        int nw=w^pr[x];
        pa[x]=z;
        pr[x]=w;
        x=nx;
        w=nw;
    }
    return pi(z,y);
}
inline void uni(int x,int y)
{
    int odd=par(x).se^par(y).se;
    x=par(x).fi;
    y=par(y).fi;
    if(x==y)
        return;
    pa[x]=y;
    pr[x]=odd^1;
    return;
}
inline void clear(int n)
{
    fill(pa,pa+n+1,0);
    return;
}
int ans[200010];
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n,m,q;
    cin>>n>>m>>q;
    vector<pi>edge(m);
    for(pi&t:edge)
        cin>>t.fi>>t.se;
    vector<pi>qv(q);
    vector<int>cv;
    for(pi&t:qv)
        cin>>t.fi>>t.se,cv.eb(--t.fi);
    sort(all(cv));
    cv.erase(unique(all(cv)),cv.end());
    for(int&cl:cv)
    {
        clear(n);
        ans[cl]=-1;
        for(int i=0;i<cl;i++)
        {
            int u=edge[i].fi,v=edge[i].se;
            if(par(u)==par(v))
            {
                ans[cl]=m;
                break;
            }
            uni(u,v);
        }
        if(ans[cl]!=-1)
            continue;
        for(int i=m;--i>cl;)
        {
            int u=edge[i].fi,v=edge[i].se;
            if(par(u)==par(v))
            {
                ans[cl]=i;
                break;
            }
            uni(u,v);
        }
    }
    for(pi&t:qv)
        cout<<(ans[t.fi]<t.se?"NO\n":"YES\n");
    cout.flush();
    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 12 ms 384 KB Output is correct
30 Correct 16 ms 384 KB Output is correct
31 Correct 16 ms 384 KB Output is correct
32 Correct 10 ms 384 KB Output is correct
33 Correct 6 ms 384 KB Output is correct
34 Correct 11 ms 384 KB Output is correct
35 Correct 24 ms 384 KB Output is correct
36 Correct 20 ms 504 KB Output is correct
37 Correct 51 ms 384 KB Output is correct
38 Correct 47 ms 384 KB Output is correct
39 Correct 33 ms 384 KB Output is correct
40 Correct 18 ms 384 KB Output is correct
41 Correct 21 ms 384 KB Output is correct
42 Correct 19 ms 384 KB Output is correct
43 Correct 25 ms 384 KB Output is correct
44 Correct 22 ms 384 KB Output is correct
45 Correct 17 ms 384 KB Output is correct
46 Correct 20 ms 384 KB Output is correct
47 Correct 21 ms 384 KB Output is correct
48 Correct 21 ms 384 KB Output is correct
49 Correct 19 ms 384 KB Output is correct
50 Correct 20 ms 384 KB Output is correct
51 Correct 25 ms 384 KB Output is correct
52 Correct 31 ms 384 KB Output is correct
53 Correct 20 ms 384 KB Output is correct
54 Correct 22 ms 384 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 91 ms 5872 KB Output is correct
4 Correct 81 ms 6512 KB Output is correct
5 Correct 95 ms 6512 KB Output is correct
6 Correct 94 ms 5872 KB Output is correct
7 Correct 89 ms 5872 KB Output is correct
8 Correct 87 ms 5616 KB Output is correct
9 Correct 85 ms 6000 KB Output is correct
10 Correct 82 ms 6768 KB Output is correct
11 Correct 90 ms 5872 KB Output is correct
12 Correct 94 ms 6512 KB Output is correct
13 Correct 85 ms 5232 KB Output is correct
14 Correct 98 ms 5544 KB Output is correct
15 Correct 99 ms 6128 KB Output is correct
16 Correct 94 ms 6640 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 91 ms 5872 KB Output is correct
30 Correct 81 ms 6512 KB Output is correct
31 Correct 95 ms 6512 KB Output is correct
32 Correct 94 ms 5872 KB Output is correct
33 Correct 89 ms 5872 KB Output is correct
34 Correct 87 ms 5616 KB Output is correct
35 Correct 85 ms 6000 KB Output is correct
36 Correct 82 ms 6768 KB Output is correct
37 Correct 90 ms 5872 KB Output is correct
38 Correct 94 ms 6512 KB Output is correct
39 Correct 85 ms 5232 KB Output is correct
40 Correct 98 ms 5544 KB Output is correct
41 Correct 99 ms 6128 KB Output is correct
42 Correct 94 ms 6640 KB Output is correct
43 Correct 400 ms 6000 KB Output is correct
44 Correct 956 ms 6540 KB Output is correct
45 Correct 801 ms 6640 KB Output is correct
46 Correct 130 ms 5884 KB Output is correct
47 Correct 149 ms 5872 KB Output is correct
48 Correct 459 ms 5960 KB Output is correct
49 Correct 703 ms 6780 KB Output is correct
50 Correct 921 ms 5748 KB Output is correct
51 Correct 787 ms 6256 KB Output is correct
52 Correct 704 ms 6652 KB Output is correct
53 Correct 661 ms 5232 KB Output is correct
54 Correct 469 ms 5672 KB Output is correct
55 Correct 613 ms 6256 KB Output is correct
56 Correct 718 ms 6768 KB Output is correct

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 12 ms 384 KB Output is correct
30 Correct 16 ms 384 KB Output is correct
31 Correct 16 ms 384 KB Output is correct
32 Correct 10 ms 384 KB Output is correct
33 Correct 6 ms 384 KB Output is correct
34 Correct 11 ms 384 KB Output is correct
35 Correct 24 ms 384 KB Output is correct
36 Correct 20 ms 504 KB Output is correct
37 Correct 51 ms 384 KB Output is correct
38 Correct 47 ms 384 KB Output is correct
39 Correct 33 ms 384 KB Output is correct
40 Correct 18 ms 384 KB Output is correct
41 Correct 21 ms 384 KB Output is correct
42 Correct 19 ms 384 KB Output is correct
43 Correct 25 ms 384 KB Output is correct
44 Correct 22 ms 384 KB Output is correct
45 Correct 17 ms 384 KB Output is correct
46 Correct 20 ms 384 KB Output is correct
47 Correct 21 ms 384 KB Output is correct
48 Correct 21 ms 384 KB Output is correct
49 Correct 19 ms 384 KB Output is correct
50 Correct 20 ms 384 KB Output is correct
51 Correct 25 ms 384 KB Output is correct
52 Correct 31 ms 384 KB Output is correct
53 Correct 20 ms 384 KB Output is correct
54 Correct 22 ms 384 KB Output is correct
55 Execution timed out 2065 ms 3288 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 12 ms 384 KB Output is correct
30 Correct 16 ms 384 KB Output is correct
31 Correct 16 ms 384 KB Output is correct
32 Correct 10 ms 384 KB Output is correct
33 Correct 6 ms 384 KB Output is correct
34 Correct 11 ms 384 KB Output is correct
35 Correct 24 ms 384 KB Output is correct
36 Correct 20 ms 504 KB Output is correct
37 Correct 51 ms 384 KB Output is correct
38 Correct 47 ms 384 KB Output is correct
39 Correct 33 ms 384 KB Output is correct
40 Correct 18 ms 384 KB Output is correct
41 Correct 21 ms 384 KB Output is correct
42 Correct 19 ms 384 KB Output is correct
43 Correct 25 ms 384 KB Output is correct
44 Correct 22 ms 384 KB Output is correct
45 Correct 17 ms 384 KB Output is correct
46 Correct 20 ms 384 KB Output is correct
47 Correct 21 ms 384 KB Output is correct
48 Correct 21 ms 384 KB Output is correct
49 Correct 19 ms 384 KB Output is correct
50 Correct 20 ms 384 KB Output is correct
51 Correct 25 ms 384 KB Output is correct
52 Correct 31 ms 384 KB Output is correct
53 Correct 20 ms 384 KB Output is correct
54 Correct 22 ms 384 KB Output is correct
55 Correct 91 ms 5872 KB Output is correct
56 Correct 81 ms 6512 KB Output is correct
57 Correct 95 ms 6512 KB Output is correct
58 Correct 94 ms 5872 KB Output is correct
59 Correct 89 ms 5872 KB Output is correct
60 Correct 87 ms 5616 KB Output is correct
61 Correct 85 ms 6000 KB Output is correct
62 Correct 82 ms 6768 KB Output is correct
63 Correct 90 ms 5872 KB Output is correct
64 Correct 94 ms 6512 KB Output is correct
65 Correct 85 ms 5232 KB Output is correct
66 Correct 98 ms 5544 KB Output is correct
67 Correct 99 ms 6128 KB Output is correct
68 Correct 94 ms 6640 KB Output is correct
69 Correct 400 ms 6000 KB Output is correct
70 Correct 956 ms 6540 KB Output is correct
71 Correct 801 ms 6640 KB Output is correct
72 Correct 130 ms 5884 KB Output is correct
73 Correct 149 ms 5872 KB Output is correct
74 Correct 459 ms 5960 KB Output is correct
75 Correct 703 ms 6780 KB Output is correct
76 Correct 921 ms 5748 KB Output is correct
77 Correct 787 ms 6256 KB Output is correct
78 Correct 704 ms 6652 KB Output is correct
79 Correct 661 ms 5232 KB Output is correct
80 Correct 469 ms 5672 KB Output is correct
81 Correct 613 ms 6256 KB Output is correct
82 Correct 718 ms 6768 KB Output is correct
83 Execution timed out 2065 ms 3288 KB Time limit exceeded
84 Halted 0 ms 0 KB -