oj.uz

Submission #901911

# Submission time Handle Problem Language Result Execution time Memory
901911 2024-01-10T04:03:08 Z 089487 Joker (BOI20_joker) C++14
14 / 100
 2000 ms 41012 KB 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("sse4,abm,avx,popcnt")
#include<bits/stdc++.h>
#define int long long
#define quick ios::sync_with_stdio(0);cin.tie(0);
#define rep(x,a,b) for(int x=a;x<=b;x++)
#define repd(x,a,b) for(int x=a;x>=b;x--)
#define lowbit(x) (x&-x)
#define F first
#define S second
#define sz(x) (int)(x.size())
#define all(x) x.begin(),x.end()
#define mp make_pair
#define eb emplace_back
using namespace std;
typedef pair<int,int> pii;
void debug(){
    cout<<"\n";
}
template <class T,class ... U >
void debug(T a, U ... b){
    cout<<a<<" ",debug(b...);
}
const int N=5e5+2;
const int INF=1e18;
pii e[N];
int p[N];
int sz[N];
void init(int n){
    rep(i,1,n) p[i]=i,sz[i]=1;
}
int fp(int x){
    if(x!=p[x]) return fp(p[x]);
    return x;
}
int ans[N];
stack<tuple<int,int,int>> state;
int n,m;
int neg(int x){
    return x>n?x-n:x+n;
}
bool _Union(int a,int b){
    int c=fp(neg(a));
    a=fp(a);
    b=fp(b);
    if(c==b) return false;
    if(sz[a]<sz[b]) swap(a,b);
    state.push(make_tuple(a,sz[a],b));
    p[b]=a;
    sz[a]+=sz[b];
    return true;
}
bool Union(int a,int b){
    if(_Union(a,neg(b))){
        _Union(b,neg(a));
        return true;
    }
    return false;
}
void undo(){
    auto [a,sza,b]=state.top();
    state.pop();
    sz[a]=sza;
    p[b]=b;
}
void solve(int l,int r,int vl,int vr){
    if(l>r) return ;
    //debug("solve",l,r,vl,vr);
    if(vl==vr){
        rep(i,l,r) ans[i]=vl;
        return ;
    }
    int mid=(l+r)>>1;
    ans[mid]=vr;
    int T0=sz(state);
    if(r<=vl){
        int t0=sz(state);
        for(int i=mid;i<=r;i++){
            Union(e[i].F,e[i].S);
        }
        int t1=sz(state)-(r==vl);
        for(int i=max(r+1,vl);i<=vr;i++){
            if(!Union(e[i].F,e[i].S)){
                ans[mid]=i-1;
                break;
            }
        }
        //debug("mid",mid,"ans",ans[mid]);
        while(sz(state)>t1) undo();
        solve(l,mid-1,vl,ans[mid]);
        while(sz(state)>t0) undo();
        for(int i=vl;i<ans[mid];i++) Union(e[i].F,e[i].S);
        solve(mid+1,r,ans[mid],vr);
    }
    else{
        int t0=sz(state);
        for(int i=mid;i<=vr;i++){
            if(!Union(e[i].F,e[i].S)) {
                ans[mid]=i-1;
                break;
            }
        }
        //debug("mid",mid,"ans",ans[mid]);
        repd(t,ans[mid],max(vl,mid)){
            undo();undo();
        }
        solve(l,mid-1,vl,ans[mid]);
        while(sz(state)>t0) undo();
        rep(t,r+1,ans[mid]-1){
            Union(e[t].F,e[t].S);
        }
        solve(mid+1,r,ans[mid],vr);
    }
    while(sz(state)>T0) undo();
}
signed main(){
	quick
    int q;
    cin>>n>>m>>q;
    init(n*2);
    rep(i,0,m-1){
        cin>>e[i].F>>e[i].S;
        e[i+m]=e[i];
    }
    int m0=m;
    m*=2;
    solve(0,m-1,0,m-1);
    /*rep(i,0,m-1){
        cout<<ans[i]<<" \n"[i==m-1];
    }*/
    /*rep(i,0,m-1){
        init(2*n);
        ans[i]=-1;
        rep(j,i,m-1){
            if(Union(e[j].F,e[j].S)) ans[i]=j;
            else break;
        }
        cout<<ans[i]<<" \n"[i==m-1];
    }*/
    string Ans[2]={"YES","NO"};
    while(q--){
        int l,r;
        cin>>l>>r;
        --l,--r;
        cout<<Ans[(ans[r+1]>=l+m0-1)]<<"\n";
    }
}

Compilation message

Joker.cpp: In function 'void undo()':
Joker.cpp:61:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   61 |     auto [a,sza,b]=state.top();
      |          ^

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6748 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6488 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6600 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6488 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6748 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6488 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6600 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6488 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 3 ms 6748 KB Output is correct
30 Correct 3 ms 6748 KB Output is correct
31 Correct 4 ms 6656 KB Output is correct
32 Correct 4 ms 6492 KB Output is correct
33 Correct 3 ms 6488 KB Output is correct
34 Correct 3 ms 6748 KB Output is correct
35 Correct 4 ms 6660 KB Output is correct
36 Correct 3 ms 6748 KB Output is correct
37 Correct 3 ms 6748 KB Output is correct
38 Correct 4 ms 6816 KB Output is correct
39 Correct 3 ms 6748 KB Output is correct
40 Correct 3 ms 6492 KB Output is correct
41 Correct 3 ms 6748 KB Output is correct
42 Correct 3 ms 6748 KB Output is correct
43 Correct 9 ms 6744 KB Output is correct
44 Correct 5 ms 6744 KB Output is correct
45 Correct 4 ms 6492 KB Output is correct
46 Correct 4 ms 6748 KB Output is correct
47 Correct 4 ms 6744 KB Output is correct
48 Correct 3 ms 6748 KB Output is correct
49 Correct 4 ms 6748 KB Output is correct
50 Correct 4 ms 6736 KB Output is correct
51 Correct 8 ms 6748 KB Output is correct
52 Correct 5 ms 6492 KB Output is correct
53 Correct 4 ms 6748 KB Output is correct
54 Correct 4 ms 6744 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6748 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 401 ms 28288 KB Output is correct
4 Correct 537 ms 41012 KB Output is correct
5 Correct 369 ms 30436 KB Output is correct
6 Correct 309 ms 26452 KB Output is correct
7 Correct 306 ms 27144 KB Output is correct
8 Execution timed out 2001 ms 24972 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 6748 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6488 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6600 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6488 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 401 ms 28288 KB Output is correct
30 Correct 537 ms 41012 KB Output is correct
31 Correct 369 ms 30436 KB Output is correct
32 Correct 309 ms 26452 KB Output is correct
33 Correct 306 ms 27144 KB Output is correct
34 Execution timed out 2001 ms 24972 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 6748 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6488 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6600 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6488 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 3 ms 6748 KB Output is correct
30 Correct 3 ms 6748 KB Output is correct
31 Correct 4 ms 6656 KB Output is correct
32 Correct 4 ms 6492 KB Output is correct
33 Correct 3 ms 6488 KB Output is correct
34 Correct 3 ms 6748 KB Output is correct
35 Correct 4 ms 6660 KB Output is correct
36 Correct 3 ms 6748 KB Output is correct
37 Correct 3 ms 6748 KB Output is correct
38 Correct 4 ms 6816 KB Output is correct
39 Correct 3 ms 6748 KB Output is correct
40 Correct 3 ms 6492 KB Output is correct
41 Correct 3 ms 6748 KB Output is correct
42 Correct 3 ms 6748 KB Output is correct
43 Correct 9 ms 6744 KB Output is correct
44 Correct 5 ms 6744 KB Output is correct
45 Correct 4 ms 6492 KB Output is correct
46 Correct 4 ms 6748 KB Output is correct
47 Correct 4 ms 6744 KB Output is correct
48 Correct 3 ms 6748 KB Output is correct
49 Correct 4 ms 6748 KB Output is correct
50 Correct 4 ms 6736 KB Output is correct
51 Correct 8 ms 6748 KB Output is correct
52 Correct 5 ms 6492 KB Output is correct
53 Correct 4 ms 6748 KB Output is correct
54 Correct 4 ms 6744 KB Output is correct
55 Correct 358 ms 26264 KB Output is correct
56 Correct 539 ms 40884 KB Output is correct
57 Correct 413 ms 30180 KB Output is correct
58 Correct 299 ms 26288 KB Output is correct
59 Execution timed out 2011 ms 25448 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 6748 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6488 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6600 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6488 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 2 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 3 ms 6748 KB Output is correct
30 Correct 3 ms 6748 KB Output is correct
31 Correct 4 ms 6656 KB Output is correct
32 Correct 4 ms 6492 KB Output is correct
33 Correct 3 ms 6488 KB Output is correct
34 Correct 3 ms 6748 KB Output is correct
35 Correct 4 ms 6660 KB Output is correct
36 Correct 3 ms 6748 KB Output is correct
37 Correct 3 ms 6748 KB Output is correct
38 Correct 4 ms 6816 KB Output is correct
39 Correct 3 ms 6748 KB Output is correct
40 Correct 3 ms 6492 KB Output is correct
41 Correct 3 ms 6748 KB Output is correct
42 Correct 3 ms 6748 KB Output is correct
43 Correct 9 ms 6744 KB Output is correct
44 Correct 5 ms 6744 KB Output is correct
45 Correct 4 ms 6492 KB Output is correct
46 Correct 4 ms 6748 KB Output is correct
47 Correct 4 ms 6744 KB Output is correct
48 Correct 3 ms 6748 KB Output is correct
49 Correct 4 ms 6748 KB Output is correct
50 Correct 4 ms 6736 KB Output is correct
51 Correct 8 ms 6748 KB Output is correct
52 Correct 5 ms 6492 KB Output is correct
53 Correct 4 ms 6748 KB Output is correct
54 Correct 4 ms 6744 KB Output is correct
55 Correct 401 ms 28288 KB Output is correct
56 Correct 537 ms 41012 KB Output is correct
57 Correct 369 ms 30436 KB Output is correct
58 Correct 309 ms 26452 KB Output is correct
59 Correct 306 ms 27144 KB Output is correct
60 Execution timed out 2001 ms 24972 KB Time limit exceeded
61 Halted 0 ms 0 KB -