oj.uz

Submission #901912

# Submission time Handle Problem Language Result Execution time Memory
901912 2024-01-10T04:04:42 Z 089487 Joker (BOI20_joker) C++14
14 / 100
 2000 ms 19004 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:25:15: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   25 | const int INF=1e18;
      |               ^~~~
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 6492 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 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6900 KB Output is correct
12 Correct 2 ms 6488 KB Output is correct
13 Correct 1 ms 6744 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 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 1 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6744 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 6492 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 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6900 KB Output is correct
12 Correct 2 ms 6488 KB Output is correct
13 Correct 1 ms 6744 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 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 1 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6744 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 2 ms 6492 KB Output is correct
30 Correct 3 ms 6492 KB Output is correct
31 Correct 3 ms 6492 KB Output is correct
32 Correct 3 ms 6492 KB Output is correct
33 Correct 3 ms 6492 KB Output is correct
34 Correct 3 ms 6492 KB Output is correct
35 Correct 3 ms 6672 KB Output is correct
36 Correct 3 ms 6492 KB Output is correct
37 Correct 3 ms 6488 KB Output is correct
38 Correct 3 ms 6748 KB Output is correct
39 Correct 3 ms 6492 KB Output is correct
40 Correct 3 ms 6492 KB Output is correct
41 Correct 3 ms 6492 KB Output is correct
42 Correct 3 ms 6492 KB Output is correct
43 Correct 13 ms 6944 KB Output is correct
44 Correct 7 ms 6492 KB Output is correct
45 Correct 3 ms 6492 KB Output is correct
46 Correct 4 ms 6492 KB Output is correct
47 Correct 4 ms 6492 KB Output is correct
48 Correct 3 ms 6492 KB Output is correct
49 Correct 4 ms 6680 KB Output is correct
50 Correct 4 ms 6492 KB Output is correct
51 Correct 11 ms 6488 KB Output is correct
52 Correct 7 ms 6488 KB Output is correct
53 Correct 4 ms 6492 KB Output is correct
54 Correct 3 ms 6492 KB Output is correct

Subtask #3
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 374 ms 12376 KB Output is correct
4 Correct 463 ms 19004 KB Output is correct
5 Correct 305 ms 13644 KB Output is correct
6 Correct 276 ms 12064 KB Output is correct
7 Correct 275 ms 12032 KB Output is correct
8 Execution timed out 2043 ms 10832 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 6492 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 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6900 KB Output is correct
12 Correct 2 ms 6488 KB Output is correct
13 Correct 1 ms 6744 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 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 1 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6744 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 374 ms 12376 KB Output is correct
30 Correct 463 ms 19004 KB Output is correct
31 Correct 305 ms 13644 KB Output is correct
32 Correct 276 ms 12064 KB Output is correct
33 Correct 275 ms 12032 KB Output is correct
34 Execution timed out 2043 ms 10832 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 6492 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 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6900 KB Output is correct
12 Correct 2 ms 6488 KB Output is correct
13 Correct 1 ms 6744 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 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 1 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6744 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 2 ms 6492 KB Output is correct
30 Correct 3 ms 6492 KB Output is correct
31 Correct 3 ms 6492 KB Output is correct
32 Correct 3 ms 6492 KB Output is correct
33 Correct 3 ms 6492 KB Output is correct
34 Correct 3 ms 6492 KB Output is correct
35 Correct 3 ms 6672 KB Output is correct
36 Correct 3 ms 6492 KB Output is correct
37 Correct 3 ms 6488 KB Output is correct
38 Correct 3 ms 6748 KB Output is correct
39 Correct 3 ms 6492 KB Output is correct
40 Correct 3 ms 6492 KB Output is correct
41 Correct 3 ms 6492 KB Output is correct
42 Correct 3 ms 6492 KB Output is correct
43 Correct 13 ms 6944 KB Output is correct
44 Correct 7 ms 6492 KB Output is correct
45 Correct 3 ms 6492 KB Output is correct
46 Correct 4 ms 6492 KB Output is correct
47 Correct 4 ms 6492 KB Output is correct
48 Correct 3 ms 6492 KB Output is correct
49 Correct 4 ms 6680 KB Output is correct
50 Correct 4 ms 6492 KB Output is correct
51 Correct 11 ms 6488 KB Output is correct
52 Correct 7 ms 6488 KB Output is correct
53 Correct 4 ms 6492 KB Output is correct
54 Correct 3 ms 6492 KB Output is correct
55 Correct 359 ms 12404 KB Output is correct
56 Correct 417 ms 18912 KB Output is correct
57 Correct 382 ms 13848 KB Output is correct
58 Correct 262 ms 11860 KB Output is correct
59 Execution timed out 2065 ms 11640 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 6492 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 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6900 KB Output is correct
12 Correct 2 ms 6488 KB Output is correct
13 Correct 1 ms 6744 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 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 1 ms 6492 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6744 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 2 ms 6492 KB Output is correct
30 Correct 3 ms 6492 KB Output is correct
31 Correct 3 ms 6492 KB Output is correct
32 Correct 3 ms 6492 KB Output is correct
33 Correct 3 ms 6492 KB Output is correct
34 Correct 3 ms 6492 KB Output is correct
35 Correct 3 ms 6672 KB Output is correct
36 Correct 3 ms 6492 KB Output is correct
37 Correct 3 ms 6488 KB Output is correct
38 Correct 3 ms 6748 KB Output is correct
39 Correct 3 ms 6492 KB Output is correct
40 Correct 3 ms 6492 KB Output is correct
41 Correct 3 ms 6492 KB Output is correct
42 Correct 3 ms 6492 KB Output is correct
43 Correct 13 ms 6944 KB Output is correct
44 Correct 7 ms 6492 KB Output is correct
45 Correct 3 ms 6492 KB Output is correct
46 Correct 4 ms 6492 KB Output is correct
47 Correct 4 ms 6492 KB Output is correct
48 Correct 3 ms 6492 KB Output is correct
49 Correct 4 ms 6680 KB Output is correct
50 Correct 4 ms 6492 KB Output is correct
51 Correct 11 ms 6488 KB Output is correct
52 Correct 7 ms 6488 KB Output is correct
53 Correct 4 ms 6492 KB Output is correct
54 Correct 3 ms 6492 KB Output is correct
55 Correct 374 ms 12376 KB Output is correct
56 Correct 463 ms 19004 KB Output is correct
57 Correct 305 ms 13644 KB Output is correct
58 Correct 276 ms 12064 KB Output is correct
59 Correct 275 ms 12032 KB Output is correct
60 Execution timed out 2043 ms 10832 KB Time limit exceeded
61 Halted 0 ms 0 KB -