oj.uz

Submission #1093852

# Submission time Handle Problem Language Result Execution time Memory
1093852 2024-09-27T17:05:36 Z 0pt1mus23 Drvca (COCI19_drvca) C++14
110 / 110
 425 ms 58200 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long int
#define pb push_back
#define ins insert
#define endl '\n'
#define putr(x) cout<<x<<endl;return;
#define all(x) x.begin(),x.end()
const int mod = 1e9 +7,sze = 1e5 +23,inf = INT_MAX, L = 18; 

int check(vector<int> arr){
    if(arr.empty()) return 0;
    int n = arr.size();
    for(int i=1;i+1<n;i++){
        if((arr[i+1]-arr[i]) != arr[i]-arr[i-1]){
            return 0;
        }
    }
    return 1;
}
void print(vector<int> arr,vector<int> brr){
    if(brr.empty()){
        brr.pb(arr.back());arr.pop_back();
    }
    cout<<arr.size()<<"\n";
    for(auto v:arr) cout<<v<<" "; cout<<endl;
    cout<<brr.size()<<"\n";
    for(auto v:brr) cout<<v<<" "; cout<<endl;
}
int equalz(vector<int> arr,int n,int eq){
    vector<int> a,b;
    for(auto v:arr){
        if(v==eq){
            a.pb(v);
        }
        else{
            b.pb(v);
        }
    }
    if(b.empty()){
        b.pb(a.back());
        a.pop_back();
    }
    // for(auto v:a) cout<<v<<" ";cout<<endl;
    if(check(b)){
        print(a,b);
        return 1;
    }
    if(a.size()>1){
        b.pb(a.back());
        a.pop_back();
        sort(all(b));
    }

    if(check(b)){
        print(a,b);
        return 1;
    }
    return 0;
}

int lg[sze];
pair<int,int> dp[L][sze];
pair<int,int> qry(int l,int r){
    if(r<l){
        return {-1,-1};
    }
    int i = lg[r-l+1];
    pair<int,int> res;
    res.first = min(dp[i][l].first,dp[i][r - (1<<(i)) +1 ].first);
    res.second = max(dp[i][l].second,dp[i][r - (1<<(i)) +1 ].second);
    return res;
}
void opt1z(){
    int n;
    cin>>n;
    for(int i=2;i<=n;i++){
        lg[i]=lg[i/2] +1;
    }
    vector<int> arr(n);
    map<int,int> count;
    int eq=-1;
    for(int i=0;i<n;i++){
        cin>>arr[i];
        count[arr[i]]++;
        if(eq==-1 && count[arr[i]]>1){
            eq=arr[i];
        }
    }
    /*
    eq:
        x,x,x,x
        a,a+k, x? , a+3k...

        x,x,x
        a,b,c,d
    idx:
        n-1,i,...j
            f[i] : i sonuncu olsa, evvelki diff, => & 0 -> i-1 diff
    */
    sort(all(arr));
    if(eq!=-1){
        // cout<<eq<<endl;
        if(equalz(arr,n,eq)){
            return;
        }
    }

    // for(auto v:arr) cout<<v<<" ";cout<<endl;

    for(int i=0;i+1<n;i++){
        dp[0][i].first=(arr[i+1]-arr[i]);
        dp[0][i].second=(arr[i+1]-arr[i]);
        // cout<<i<<" "<<arr[i+1]-arr[i]<<endl;
    }
    int m2=n-1;
    for(int i =1;i<L;i++){
        for(int j=0;j+ (1<<i)<=m2;j++){
            dp[i][j].first = min(
                dp[i-1][j].first,dp[i-1][j + (1<<(i-1))].first
            );
            dp[i][j].second = max(
                dp[i-1][j].second,dp[i-1][j + (1<<(i-1))].second
            );
        }
    }

    map<int,int> last;
    for(int i=0;i<n;i++){
        last[arr[i]]=i;
    }

    map<int,int> mem;
    mem[0]=1;
    set<int> ff;
    for(int im=0;im+1<n;im++){
        int ferq = arr.back()-arr[im]; 
        if(mem[ferq]){
            continue;
        }
        mem[ferq]=1;
        vector<int> lst;
        lst.pb(n-1);
        lst.pb(im);
        int curr = arr[im];
        while(true){
            curr = curr-ferq;
            if(!last.count(curr)){
                break;
            }
            lst.pb(last[curr]);
        }
        // cout<<ferq<<": ";
        // for(auto v:lst) cout<<v<<" ";cout<<endl;
        int m = lst.size();
        vector<pair<int,int>> f(m,{0,-1});
        vector<int> f3(m,-1);
        f[0].first=1;
        f[0].second=-1;

        int arxaferq = -1;
        for(int i=1;i<m;i++){
            if(!f[i-1].first){
                break;
            }
            int rx = lst[i-1]-1;
            int lx = lst[i]+1;
            if(lx>rx){
                f[i].first = 1;
                f3[i]=f3[i-1];
                f[i].second = f[i-1].second;
                continue;
            }

            int lan2 = arr[lx];

            pair<int,int> orta = qry(lx,rx-1);
            if(orta.first!=orta.second){
                break;
            }
            int connection=-1;
            if(f[i-1].second != -1){
                connection = f[i-1].second - arr[rx];
                // cout<<connection<<endl;
            }
            ff.clear();
            if(connection!=-1){
                ff.ins(connection);
            }

            if(orta.first!=-1){
                ff.ins(orta.first);
            }
            if(arxaferq!=-1){
                ff.ins(arxaferq);
            }
            // cout<<i<<" => ";
            // cout<<orta.first<<" "<<arxaferq<<" "<<connection<<" "<<endl;
            // cout<<endl;
            
            if(ff.size()>1){
                break;
            }
            if(!ff.empty()){
                // cout<<i<<" "<<"Sa"<<endl;
                arxaferq = (*ff.begin());
            }
            f3[i]=arxaferq;
            f[i].second  =  lan2;
            f[i].first  =  1;
        }
        // cout<<ferq<<" =: ";
        // for(auto v:lst) cout<<arr[v]<<" ";cout<<endl;
        // for(int i=0;i<m;i++){
        //     cout<<f[i].first<<" "<<f[i].second<<"\n";
        // }
        // cout<<endl;
        for(int i =0;i<m;i++){
            if(!f[i].first){
                break;
            }
            int f2 = f3[i];
            pair<int,int> zero = qry(0,lst[i]-2);
            if(zero.first!=zero.second){
                continue;
            }
            ff.clear();
            int connection =-1;
            if(lst[i]>0 && f[i].second!=-1 ){
                connection = f[i].second - arr[lst[i]-1];
                // cout<<ferq<<" "<<i<<" "<<f2<<" "<<connection<<" "<<f[i].second<<endl;
            }
            if(zero.first!=-1){
                ff.ins(zero.first);
            }
            if(f2!=-1){
                ff.ins(f2);
            }
            if(connection!=-1){
                ff.ins(connection);
            }
            if(ff.size()<2){
                map<int,int> used;
                vector<int> a,b;
                for(int j=0;j<=i;j++){
                    used[lst[j]]=1;
                    a.pb(arr[lst[j]]);
                }
                reverse(all(a));
                for(int j=0;j<n;j++){
                    if(!used[j]){
                        b.pb(arr[j]);
                    }
                }
                if(!check(a) || !check(b)){
                    putr("lan");
                    while(true){

                    }
                }
                print(a,b);
                return;
            }
        }


    }



    putr(-1);
}
 
signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);

    int tt = 1;
    // cin>>tt;
    while(tt--){
        opt1z();
    }
 
    return 0;
}

Compilation message

drvca.cpp: In function 'void print(std::vector<long long int>, std::vector<long long int>)':
drvca.cpp:26:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   26 |     for(auto v:arr) cout<<v<<" "; cout<<endl;
      |     ^~~
drvca.cpp:26:35: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   26 |     for(auto v:arr) cout<<v<<" "; cout<<endl;
      |                                   ^~~~
drvca.cpp:28:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   28 |     for(auto v:brr) cout<<v<<" "; cout<<endl;
      |     ^~~
drvca.cpp:28:35: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   28 |     for(auto v:brr) cout<<v<<" "; cout<<endl;
      |                                   ^~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 600 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 1 ms 612 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 0 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 0 ms 604 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 287 ms 56824 KB Output is correct
2 Correct 294 ms 56660 KB Output is correct
3 Correct 275 ms 56624 KB Output is correct
4 Correct 288 ms 56752 KB Output is correct
5 Correct 279 ms 56716 KB Output is correct
6 Correct 287 ms 56724 KB Output is correct
7 Correct 275 ms 56600 KB Output is correct
8 Correct 280 ms 56724 KB Output is correct
9 Correct 260 ms 54224 KB Output is correct
10 Correct 279 ms 54420 KB Output is correct
11 Correct 15 ms 6500 KB Output is correct
12 Correct 1 ms 348 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 1 ms 600 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 1 ms 612 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 0 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 0 ms 604 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 287 ms 56824 KB Output is correct
32 Correct 294 ms 56660 KB Output is correct
33 Correct 275 ms 56624 KB Output is correct
34 Correct 288 ms 56752 KB Output is correct
35 Correct 279 ms 56716 KB Output is correct
36 Correct 287 ms 56724 KB Output is correct
37 Correct 275 ms 56600 KB Output is correct
38 Correct 280 ms 56724 KB Output is correct
39 Correct 260 ms 54224 KB Output is correct
40 Correct 279 ms 54420 KB Output is correct
41 Correct 15 ms 6500 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 250 ms 56368 KB Output is correct
44 Correct 306 ms 48276 KB Output is correct
45 Correct 399 ms 55960 KB Output is correct
46 Correct 257 ms 56352 KB Output is correct
47 Correct 184 ms 47500 KB Output is correct
48 Correct 404 ms 56116 KB Output is correct
49 Correct 244 ms 56212 KB Output is correct
50 Correct 295 ms 48108 KB Output is correct
51 Correct 409 ms 56208 KB Output is correct
52 Correct 425 ms 58200 KB Output is correct
53 Correct 252 ms 47732 KB Output is correct
54 Correct 395 ms 56212 KB Output is correct
55 Correct 283 ms 55956 KB Output is correct
56 Correct 16 ms 6376 KB Output is correct
57 Correct 15 ms 6360 KB Output is correct
58 Correct 0 ms 348 KB Output is correct