oj.uz

Submission #890439

# Submission time Handle Problem Language Result Execution time Memory
890439 2023-12-21T09:02:05 Z Darren0724 Passport (JOI23_passport) C++17
6 / 100
 646 ms 514940 KB 
#include <bits/stdc++.h>
using namespace std;
#define LCBorz ios_base::sync_with_stdio(false); cin.tie(0);
#define all(x) x.begin(), x.end()
#define endl '\n'
const int K=18;
const int INF=1e9;
const int mod=998244353;
struct sparse_table_min{
    vector<int> v[K];
    void init(vector<int> &a){
        int n=a.size();
        for(int i=0;i<K;i++){
            v[i].resize(n);
        }
        for(int i=0;i<n;i++){
            v[0][i]=a[i];
        }
        for(int j=1;j<K;j++){
            int p=(1<<j);
            for(int i=0;i+p<=n;i++){
                v[j][i]=min(v[j-1][i],v[j-1][i+(p>>1)]);
            }
        }
    }
    int ask(int l,int r){
        int p=__lg(r-l+1);
        return min(v[p][l],v[p][r-(1<<p)+1]);
    }
};
struct sparse_table_max{
    vector<int> v[K];
    void init(vector<int> &a){
        int n=a.size();
        for(int i=0;i<K;i++){
            v[i].resize(n);
        }
        for(int i=0;i<n;i++){
            v[0][i]=a[i];
        }
        for(int j=1;j<K;j++){
            int p=(1<<j);
            for(int i=0;i+p<=n;i++){
                v[j][i]=max(v[j-1][i],v[j-1][i+(p>>1)]);
            }
        }
    }
    int ask(int l,int r){
        int p=__lg(r-l+1);
        return max(v[p][l],v[p][r-(1<<p)+1]);
    }
};
void solve(){
    int n;cin>>n;
    vector<int> b(n+1),c(n+1),b1(n+1),c1(n+1);
    for(int i=1;i<=n;i++){
        cin>>b[i]>>c[i];
        b1[i]=b[i];
        c1[i]=c[i];
    }
    vector<sparse_table_min> st1(K);
    vector<sparse_table_max> st2(K);
    for(int i=0;i<K;i++){
        st1[i].init(b);
        st2[i].init(c);
        for(int j=1;j<=n;j++){
            int l=b[j],r=c[j];
            b[j]=st1[i].ask(l,r);
            c[j]=st2[i].ask(l,r);
        }
    }
    vector<int> ans(n+1);
    for(int i=1;i<=n;i++){
        if(b[i]!=1||c[i]!=n){
            ans[i]=-1;
            continue;
        }
        int l=b1[i],r=c1[i];
        for(int j=K-1;j>=0;j--){
            int l1=st1[j].ask(l,r);
            int r1=st2[j].ask(l,r);
            if(r1==n&&l1==1){
                continue;
            }
            l=l1,r=r1;
            ans[i]+=(1<<j);
        }
        if(l==1&&r==n){
            ans[i]--;
        }
        ans[i]+=2;
    }
    int q;cin>>q;
    for(int i=0;i<q;i++){
        int p;cin>>p;
        cout<<ans[p]<<endl;
    }
}
int32_t main() {
    LCBorz;
    int t=1;//cin>>t;
    while(t--){
        solve();
    }

    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 646 ms 502872 KB Output is correct
5 Correct 349 ms 509516 KB Output is correct
6 Correct 353 ms 514940 KB Output is correct
7 Correct 309 ms 501168 KB Output is correct
8 Correct 237 ms 404308 KB Output is correct

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Incorrect 0 ms 424 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Incorrect 0 ms 424 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #4
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Incorrect 0 ms 424 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #5
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 646 ms 502872 KB Output is correct
5 Correct 349 ms 509516 KB Output is correct
6 Correct 353 ms 514940 KB Output is correct
7 Correct 309 ms 501168 KB Output is correct
8 Correct 237 ms 404308 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Incorrect 0 ms 424 KB Output isn't correct
16 Halted 0 ms 0 KB -