oj.uz

Submission #306126

# Submission time Handle Problem Language Result Execution time Memory
306126 2020-09-24T15:08:47 Z 2fat2code Joker (BOI20_joker) C++17
14 / 100
 2000 ms 10088 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define all(a) (a).begin(), (a).end()
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define fr first
#define sc second
//#define int long long
//#define mp make_pair
#define rc(s) return cout<<s,0
#define rcc(s) cout<<s,exit(0)

const int nmax = 200005;

int n,m,q,frbipartid[nmax],siz[nmax];
pair<int,int>par[nmax];
vector<int>rollback;
vector<pair<int,int>>edges;

void roll(int sz){
    while((int)rollback.size() > sz){
        auto it = rollback.back();
        siz[par[it].fr] -= siz[it];
        par[it].fr = it;
        par[it].sc = 0;
        rollback.pop_back();
    }
}

pair<int,int>findpar(int x,int path){
    pair<int,int>ans = {par[x].fr, 0};
    if(x != par[x].fr){
        ans = findpar(par[x].fr,path+1);
        ans.sc ^= par[x].sc;
    }
    return ans;
}

bool onion(int x,int y){
    pair<int,int>x1,y1;
    x1 = findpar(x,0);
    y1 = findpar(y,0);
    if(x1.fr == y1.fr){
        if(x1.sc == y1.sc){
            return false;
        }
        else{
            return true;
        }
    }
    else{
        if(siz[x1.fr] < siz[y1.fr]) swap(x1,y1);
        siz[y1.fr] += siz[x1.fr];
        par[x1.fr].fr = y1.fr;
        if(x1.sc == y1.sc){
            par[x1.fr].sc = 1;
        }
        else{
            par[x1.fr].sc = 0;
        }
        rollback.push_back(x1.fr);
        return true;
    }
}

void DAC(int l_nod,int r_nod,int l_range,int r_range,int funct){
    if(r_nod < l_nod) return;
    if(l_range == r_range){
        for(int j=l_nod;j<=r_nod;j++){
            frbipartid[j] = l_range;
        }
        return;
    }
    else{
        int mid = l_range + (r_range - l_range) / 2;
        bool bl = false;
        int sz_roll = rollback.size();
        for(int j=r_range;j>mid;j--){
            if(j == m + 1){ continue; }
            else{
                if(!onion(edges[j-1].fr,edges[j-1].sc)){
                    bl = true;
                    break;
                }
            }
        }
        int indx = l_nod;
        if(bl == false){
            int sz_roll2=(int)rollback.size();
            indx = -1;
            for(int j=l_nod;j<=min(r_nod,mid);j++){
                if(onion(edges[j-1].fr,edges[j-1].sc) == false){
                    indx = j + 1;
                    break;
                }
            }
            if(indx == -1) indx = min(r_nod,mid) + 1;
            roll(sz_roll2);
            DAC(l_nod,indx-1,l_range,mid,funct + 1);
        }
        roll(sz_roll);
        int sz_roll3 = (int)rollback.size();
        bool bllmao = false;
        for(int j=l_nod;j<indx;j++){
            if(onion(edges[j-1].fr,edges[j-1].sc) == false){
                bllmao = true;
                break;
            }
        }
        if(bllmao == false){
            DAC(indx,r_nod,mid+1,r_range,funct + 1);
        }
        else{
            for(int j=indx;j<=r_nod;j++){
                frbipartid[j] = m + 1;
            }
        }
        roll(sz_roll3);
    }
}

int32_t main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
    srand(chrono::steady_clock::now().time_since_epoch().count());
    cin >> n >> m >> q;
    for(int i=1;i<=n;i++){
        par[i] = {i, 0};
        siz[i] = 1;
    }
    for(int i=1;i<=m;i++){
        int x,y;
        cin >> x >> y;
        edges.push_back({x,y});
    }
    DAC(1,m,1,m+1,1);
    for(int i=1;i<=q;i++){
        int x,y;
        cin >> x >> y;
        if(frbipartid[x] <= y){
            cout << "NO" << '\n';
        }
        else{
            cout << "YES" << '\n';
        }
    }
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 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 1 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 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 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 1 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 2 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 2 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 2 ms 416 KB Output is correct
35 Correct 3 ms 384 KB Output is correct
36 Correct 2 ms 384 KB Output is correct
37 Correct 2 ms 512 KB Output is correct
38 Correct 3 ms 384 KB Output is correct
39 Correct 3 ms 384 KB Output is correct
40 Correct 2 ms 384 KB Output is correct
41 Correct 2 ms 384 KB Output is correct
42 Correct 2 ms 384 KB Output is correct
43 Correct 3 ms 384 KB Output is correct
44 Correct 3 ms 384 KB Output is correct
45 Correct 2 ms 384 KB Output is correct
46 Correct 2 ms 384 KB Output is correct
47 Correct 2 ms 384 KB Output is correct
48 Correct 3 ms 384 KB Output is correct
49 Correct 3 ms 384 KB Output is correct
50 Correct 4 ms 384 KB Output is correct
51 Correct 3 ms 384 KB Output is correct
52 Correct 4 ms 384 KB Output is correct
53 Correct 2 ms 384 KB Output is correct
54 Correct 2 ms 384 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 257 ms 7032 KB Output is correct
4 Correct 602 ms 8828 KB Output is correct
5 Correct 333 ms 10088 KB Output is correct
6 Correct 298 ms 5860 KB Output is correct
7 Correct 339 ms 5484 KB Output is correct
8 Execution timed out 2085 ms 3588 KB Time limit exceeded
9 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 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 1 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 257 ms 7032 KB Output is correct
30 Correct 602 ms 8828 KB Output is correct
31 Correct 333 ms 10088 KB Output is correct
32 Correct 298 ms 5860 KB Output is correct
33 Correct 339 ms 5484 KB Output is correct
34 Execution timed out 2085 ms 3588 KB Time limit exceeded
35 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 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 1 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 2 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 2 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 2 ms 416 KB Output is correct
35 Correct 3 ms 384 KB Output is correct
36 Correct 2 ms 384 KB Output is correct
37 Correct 2 ms 512 KB Output is correct
38 Correct 3 ms 384 KB Output is correct
39 Correct 3 ms 384 KB Output is correct
40 Correct 2 ms 384 KB Output is correct
41 Correct 2 ms 384 KB Output is correct
42 Correct 2 ms 384 KB Output is correct
43 Correct 3 ms 384 KB Output is correct
44 Correct 3 ms 384 KB Output is correct
45 Correct 2 ms 384 KB Output is correct
46 Correct 2 ms 384 KB Output is correct
47 Correct 2 ms 384 KB Output is correct
48 Correct 3 ms 384 KB Output is correct
49 Correct 3 ms 384 KB Output is correct
50 Correct 4 ms 384 KB Output is correct
51 Correct 3 ms 384 KB Output is correct
52 Correct 4 ms 384 KB Output is correct
53 Correct 2 ms 384 KB Output is correct
54 Correct 2 ms 384 KB Output is correct
55 Correct 211 ms 6376 KB Output is correct
56 Correct 589 ms 9752 KB Output is correct
57 Correct 179 ms 9064 KB Output is correct
58 Correct 228 ms 5100 KB Output is correct
59 Execution timed out 2087 ms 4248 KB Time limit exceeded
60 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 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 1 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 2 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 2 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 2 ms 416 KB Output is correct
35 Correct 3 ms 384 KB Output is correct
36 Correct 2 ms 384 KB Output is correct
37 Correct 2 ms 512 KB Output is correct
38 Correct 3 ms 384 KB Output is correct
39 Correct 3 ms 384 KB Output is correct
40 Correct 2 ms 384 KB Output is correct
41 Correct 2 ms 384 KB Output is correct
42 Correct 2 ms 384 KB Output is correct
43 Correct 3 ms 384 KB Output is correct
44 Correct 3 ms 384 KB Output is correct
45 Correct 2 ms 384 KB Output is correct
46 Correct 2 ms 384 KB Output is correct
47 Correct 2 ms 384 KB Output is correct
48 Correct 3 ms 384 KB Output is correct
49 Correct 3 ms 384 KB Output is correct
50 Correct 4 ms 384 KB Output is correct
51 Correct 3 ms 384 KB Output is correct
52 Correct 4 ms 384 KB Output is correct
53 Correct 2 ms 384 KB Output is correct
54 Correct 2 ms 384 KB Output is correct
55 Correct 257 ms 7032 KB Output is correct
56 Correct 602 ms 8828 KB Output is correct
57 Correct 333 ms 10088 KB Output is correct
58 Correct 298 ms 5860 KB Output is correct
59 Correct 339 ms 5484 KB Output is correct
60 Execution timed out 2085 ms 3588 KB Time limit exceeded
61 Halted 0 ms 0 KB -