제출 #1299090

#제출 시각아이디문제언어결과실행 시간메모리
1299090hihihihawAbracadabra (CEOI22_abracadabra)C++20
35 / 100
3096 ms36724 KiB
#pragma GCC optimize("O3,unroll-loops,fast-math")    
#include <bits/stdc++.h>
using namespace std;
 
#define int long long
#define ll long long
#define pb push_back
#define pii pair<int,int>
#define sz(v) (int)v.size()
#define fi first
#define se second
#define INF 1223372036854775807
#define INF2 122337203
#define MOD 998244353
#define cint(x) int x;cin>>x;
#define cinarr(a,n) int a[n];for (int i=0;i<n;i++) cin>>a[i];
#define coutarr(a) for (auto d:a)cout<<d<<" "; cout<<endl;
#define coutarrD(a) for (auto d:a) cout<<d.fi<<","<<d.se<<" "; cout<<endl;
#define BERKAY_TUP ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define endl '\n'
#define ld long double
#define mid (start+end)/2
#define vvi vector<vector<int>>
int t=1;
int interactive=0;
int usaco=0;
int testCase=0;

int a[200023];
int tree[800023];
void update(int n,int start,int end,int x,int v){
    if(start>end || start>x || end<x) return;
    if (start>=x && end<=x){
        tree[n]=v;
        return;
    }
    update(n*2,start,mid,x,v);
    update(n*2+1,mid+1,end,x,v);
    tree[n]=tree[n*2]+tree[n*2+1];
}
int f=0;
pii fin(int n,int start,int end,int k){
    if (start==end) return {start,tree[n]};
    if (tree[n*2]>=k) return fin(n*2,start,mid,k);
    else{
        f+=tree[n*2];
        return fin(n*2+1,mid+1,end,k-tree[n*2]);
    }
}
int revP[200023];
void solve(){
    int n,q;
    cin>>n>>q;
    vector<pair<pii,int>> qu;
    for (int i=1;i<=n;i++) cin>>a[i];
    for (int i=1;i<=n;i++) revP[a[i]]=i;
    for (int i=0;i<q;i++){
        int t,x;
        cin>>t>>x;
        qu.pb({{t,x},i});
    }
    sort(qu.begin(),qu.end());
    int c=1;
    int x=0;
    int xv=0;
    for (int i=1;i<=n/2;i++){
        if (a[i]>xv){
            if (xv!=0){
                update(1,1,n,xv,x);
                //cout<<xv<<" "<<x<<endl;
            }
            xv=a[i];
            x=1;
        }
        else x++;
    }
    if (xv!=0){
        update(1,1,n,xv,x);
        //cout<<xv<<" "<<x<<endl;
    }
    xv=0,x=0;
    for (int i=n/2+1;i<=n;i++){
        if (a[i]>xv){
            if (xv!=0){
                update(1,1,n,xv,x);
                //cout<<xv<<" "<<x<<endl;
            }
            xv=a[i];
            x=1;
        }
        else x++;
    }
    if (xv!=0){
        update(1,1,n,xv,x);
        //cout<<xv<<" "<<x<<endl;
    }
    int ans[q];
    for  (int i=0;i<q;i++){
        auto d=qu[i];
        if (d.fi.fi==0) ans[d.se]=a[d.fi.se];
        else{
            while (d.fi.fi>c && !(c>=n)){
                //cout<<"b"<<endl;
                f=0;
                pii j=fin(1,1,n,n/2);
                int g=j.se-(n/2-f);
                xv=0;
                for (int i=revP[j.fi]+(n/2-f);i<=revP[j.fi]+j.se-1;i++){
                    if (a[i]>xv){
                        if (xv!=0){
                            update(1,1,n,xv,x);
                            //cout<<"a"<<xv<<" "<<x<<endl;
                        }
                        xv=a[i];
                        x=1;
                    }
                    else x++;
                }
                if (xv!=0){
                    update(1,1,n,xv,x);
                    //cout<<"a"<<xv<<" "<<x<<endl;
                }
                update(1,1,n,j.fi,n/2-f);
                c++;
            }
            f=0;
            pii j=fin(1,1,n,d.fi.se);
            int k=d.fi.se;
            //cout<<"*"<<j.fi<<" "<<f<<endl;
            ans[d.se]=a[revP[j.fi]+k-f-1];
        }
    }
    for (int d:ans) cout<<d<<endl;
}

 
 
 
 
 
 

 
int32_t main(){
    BERKAY_TUP;
    if (usaco){
        freopen("team.in", "r", stdin);
        freopen("team.out", "w", stdout);
    }
    if (!interactive){
    #ifdef Local
        freopen("in.txt", "r", stdin);
        freopen("out2.txt", "w", stdout);
        //freopen("wormsort.out", "w", stdout);
    #endif
    }
    if (t==1) solve();
    else{
        cin>>t;
        while (t--){testCase++;solve();}
    }
    
        
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int32_t main()':
Main.cpp:147:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  147 |         freopen("team.in", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:148:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  148 |         freopen("team.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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