oj.uz

Submission #930609

# Submission time Handle Problem Language Result Execution time Memory
930609 2024-02-20T07:53:37 Z Faisal_Saqib Joker (BOI20_joker) C++17
39 / 100
 2000 ms 22520 KB 
#include <bits/stdc++.h>
using namespace std;
const int M=2e5+1;
int n,m,q;
bool mark[M],vis[M];
int val[M];
vector<pair<int,int>> ma[M],query;
int mx_r_for_l[M];
bool found=0;
void dfs(int x)
{
    vis[x]=1;
    for(auto [y,ind]:ma[x])
    {
        if(mark[ind])
            continue;
        if(!vis[y])
        {
            val[y]=(val[x]+1)%2;
            dfs(y);
        }
        else if((val[y]+1)%2!=val[x])
        {
            found=1;
        }
    }
}
bool check(int l,int r)
{
    // cout<<"Check "<<l<<' '<<r<<endl;
    for(int i=1;i<=n;i++)
        vis[i]=0;
    for(int i=0;i<m;i++)
        mark[i]=(l<=i and i<=r);
    found=0;
    for(int i=1;i<=n;i++)
    {
        if(!vis[i])
        {
            dfs(i);
        }
    }
    // cout<<"Answer "<<found<<endl;
    return found;
}
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios::sync_with_stdio(0);
 
    cin>>n>>m>>q;
    for(int i=0;i<m;i++)
    {
        int a,b;
        cin>>a>>b;
        // cout<<i+1<<"th edge is "<<a<<' '<<b<<endl;
        ma[a].push_back({b,i});
        ma[b].push_back({a,i});
    }
    vector<int> difl={-1};
    for(int lp=0;lp<q;lp++)
    {
        int l,r;
        cin>>l>>r;
        l--;
        r--;
        query.push_back({l,r});
        difl.push_back(l);
    }
    sort(begin(difl),end(difl));
	  int p=-1;
    for(int i=1;i<difl.size();i++)
    {
        if(difl[i-1]!=difl[i])
        {
            int l=difl[i];
            int sr=max(p,l-1);
            int er=m;
            // cout<<"Solve "<<l<<endl;
            while(sr+1<er)
            {
                int mid=(sr+er)/2;
                if(check(l,mid))
                {
                    //is there is odd cycle then we have to remove more edge 
                    sr=mid;
                }
                else{
                    er=mid;
                }
            }
            // cout<<"mx r"<<sr<<endl;
            mx_r_for_l[l]=sr;
	          p=max(p,sr);
        }
    }
    for(auto [l,r]:query)
    {
        if(mx_r_for_l[l]>=r)
        {
            cout<<"YES"<<'\n';
        }
        else{
            cout<<"NO"<<'\n';
        }
    }
    return 0;
}

Compilation message

Joker.cpp: In function 'int main()':
Joker.cpp:73:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |     for(int i=1;i<difl.size();i++)
      |                 ~^~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 2 ms 6552 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6580 KB Output is correct
12 Correct 3 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 3 ms 6488 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6488 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6492 KB Output is correct
20 Correct 2 ms 6492 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 2 ms 6492 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 2 ms 6492 KB Output is correct
28 Correct 2 ms 6580 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 2 ms 6552 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6580 KB Output is correct
12 Correct 3 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 3 ms 6488 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6488 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6492 KB Output is correct
20 Correct 2 ms 6492 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 2 ms 6492 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 2 ms 6492 KB Output is correct
28 Correct 2 ms 6580 KB Output is correct
29 Correct 128 ms 6692 KB Output is correct
30 Correct 136 ms 6492 KB Output is correct
31 Correct 109 ms 6728 KB Output is correct
32 Correct 50 ms 6744 KB Output is correct
33 Correct 13 ms 6748 KB Output is correct
34 Correct 96 ms 6748 KB Output is correct
35 Correct 175 ms 6724 KB Output is correct
36 Correct 70 ms 6748 KB Output is correct
37 Correct 133 ms 6992 KB Output is correct
38 Correct 243 ms 6748 KB Output is correct
39 Correct 70 ms 6740 KB Output is correct
40 Correct 39 ms 6744 KB Output is correct
41 Correct 35 ms 6764 KB Output is correct
42 Correct 34 ms 7004 KB Output is correct
43 Correct 26 ms 6748 KB Output is correct
44 Correct 60 ms 6760 KB Output is correct
45 Correct 72 ms 6744 KB Output is correct
46 Correct 156 ms 7000 KB Output is correct
47 Correct 59 ms 6744 KB Output is correct
48 Correct 72 ms 6736 KB Output is correct
49 Correct 93 ms 6724 KB Output is correct
50 Correct 118 ms 6716 KB Output is correct
51 Correct 32 ms 6744 KB Output is correct
52 Correct 52 ms 6748 KB Output is correct
53 Correct 96 ms 6736 KB Output is correct
54 Correct 161 ms 6748 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 133 ms 18996 KB Output is correct
4 Correct 198 ms 19256 KB Output is correct
5 Correct 167 ms 18316 KB Output is correct
6 Correct 203 ms 18972 KB Output is correct
7 Correct 186 ms 18996 KB Output is correct
8 Correct 167 ms 18360 KB Output is correct
9 Correct 224 ms 19268 KB Output is correct
10 Correct 292 ms 18720 KB Output is correct
11 Correct 214 ms 18276 KB Output is correct
12 Correct 226 ms 18112 KB Output is correct
13 Correct 125 ms 16432 KB Output is correct
14 Correct 166 ms 18100 KB Output is correct
15 Correct 239 ms 19128 KB Output is correct
16 Correct 282 ms 18460 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 2 ms 6552 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6580 KB Output is correct
12 Correct 3 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 3 ms 6488 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6488 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6492 KB Output is correct
20 Correct 2 ms 6492 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 2 ms 6492 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 2 ms 6492 KB Output is correct
28 Correct 2 ms 6580 KB Output is correct
29 Correct 133 ms 18996 KB Output is correct
30 Correct 198 ms 19256 KB Output is correct
31 Correct 167 ms 18316 KB Output is correct
32 Correct 203 ms 18972 KB Output is correct
33 Correct 186 ms 18996 KB Output is correct
34 Correct 167 ms 18360 KB Output is correct
35 Correct 224 ms 19268 KB Output is correct
36 Correct 292 ms 18720 KB Output is correct
37 Correct 214 ms 18276 KB Output is correct
38 Correct 226 ms 18112 KB Output is correct
39 Correct 125 ms 16432 KB Output is correct
40 Correct 166 ms 18100 KB Output is correct
41 Correct 239 ms 19128 KB Output is correct
42 Correct 282 ms 18460 KB Output is correct
43 Execution timed out 2016 ms 22520 KB Time limit exceeded
44 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 2 ms 6552 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6580 KB Output is correct
12 Correct 3 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 3 ms 6488 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6488 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6492 KB Output is correct
20 Correct 2 ms 6492 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 2 ms 6492 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 2 ms 6492 KB Output is correct
28 Correct 2 ms 6580 KB Output is correct
29 Correct 128 ms 6692 KB Output is correct
30 Correct 136 ms 6492 KB Output is correct
31 Correct 109 ms 6728 KB Output is correct
32 Correct 50 ms 6744 KB Output is correct
33 Correct 13 ms 6748 KB Output is correct
34 Correct 96 ms 6748 KB Output is correct
35 Correct 175 ms 6724 KB Output is correct
36 Correct 70 ms 6748 KB Output is correct
37 Correct 133 ms 6992 KB Output is correct
38 Correct 243 ms 6748 KB Output is correct
39 Correct 70 ms 6740 KB Output is correct
40 Correct 39 ms 6744 KB Output is correct
41 Correct 35 ms 6764 KB Output is correct
42 Correct 34 ms 7004 KB Output is correct
43 Correct 26 ms 6748 KB Output is correct
44 Correct 60 ms 6760 KB Output is correct
45 Correct 72 ms 6744 KB Output is correct
46 Correct 156 ms 7000 KB Output is correct
47 Correct 59 ms 6744 KB Output is correct
48 Correct 72 ms 6736 KB Output is correct
49 Correct 93 ms 6724 KB Output is correct
50 Correct 118 ms 6716 KB Output is correct
51 Correct 32 ms 6744 KB Output is correct
52 Correct 52 ms 6748 KB Output is correct
53 Correct 96 ms 6736 KB Output is correct
54 Correct 161 ms 6748 KB Output is correct
55 Execution timed out 2067 ms 15204 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 2 ms 6552 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6580 KB Output is correct
12 Correct 3 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 3 ms 6488 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6488 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6492 KB Output is correct
20 Correct 2 ms 6492 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 2 ms 6492 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 2 ms 6492 KB Output is correct
28 Correct 2 ms 6580 KB Output is correct
29 Correct 128 ms 6692 KB Output is correct
30 Correct 136 ms 6492 KB Output is correct
31 Correct 109 ms 6728 KB Output is correct
32 Correct 50 ms 6744 KB Output is correct
33 Correct 13 ms 6748 KB Output is correct
34 Correct 96 ms 6748 KB Output is correct
35 Correct 175 ms 6724 KB Output is correct
36 Correct 70 ms 6748 KB Output is correct
37 Correct 133 ms 6992 KB Output is correct
38 Correct 243 ms 6748 KB Output is correct
39 Correct 70 ms 6740 KB Output is correct
40 Correct 39 ms 6744 KB Output is correct
41 Correct 35 ms 6764 KB Output is correct
42 Correct 34 ms 7004 KB Output is correct
43 Correct 26 ms 6748 KB Output is correct
44 Correct 60 ms 6760 KB Output is correct
45 Correct 72 ms 6744 KB Output is correct
46 Correct 156 ms 7000 KB Output is correct
47 Correct 59 ms 6744 KB Output is correct
48 Correct 72 ms 6736 KB Output is correct
49 Correct 93 ms 6724 KB Output is correct
50 Correct 118 ms 6716 KB Output is correct
51 Correct 32 ms 6744 KB Output is correct
52 Correct 52 ms 6748 KB Output is correct
53 Correct 96 ms 6736 KB Output is correct
54 Correct 161 ms 6748 KB Output is correct
55 Correct 133 ms 18996 KB Output is correct
56 Correct 198 ms 19256 KB Output is correct
57 Correct 167 ms 18316 KB Output is correct
58 Correct 203 ms 18972 KB Output is correct
59 Correct 186 ms 18996 KB Output is correct
60 Correct 167 ms 18360 KB Output is correct
61 Correct 224 ms 19268 KB Output is correct
62 Correct 292 ms 18720 KB Output is correct
63 Correct 214 ms 18276 KB Output is correct
64 Correct 226 ms 18112 KB Output is correct
65 Correct 125 ms 16432 KB Output is correct
66 Correct 166 ms 18100 KB Output is correct
67 Correct 239 ms 19128 KB Output is correct
68 Correct 282 ms 18460 KB Output is correct
69 Execution timed out 2016 ms 22520 KB Time limit exceeded
70 Halted 0 ms 0 KB -