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답안 #797653

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
797653 2023-07-29T17:44:25 Z FEDIKUS Abracadabra (CEOI22_abracadabra) C++17
100 / 100
 568 ms 40724 KB 
#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define pf push_front
#define popb pop_back
#define popf pop_front
#define xx first
#define yy second
#define ff(i,s,f) for(int i=s;i<f;i++)
#define fb(i,s,f) for(int i=(s)-1;i>=f;i--)
#define ffi(i,s,f) for(int i=s;i<=f;i++)
#define fbi(i,s,f) for(int i=s;i>=f;i--)
#define srt(a) sort(a.begin(),a.end());
#define srtg(a,int) sort(a.begin(),a.end(),greater<int>())
#define lb(a,x) lower_bound(a.begin(),a.end(),x)
#define ub(a,x) upper_bound(a.begin(),a.end(),x)
#define fnd(a,x) find(a.begin(),a.end(),x)
#define ios ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef string str;

using ti = tuple<int,int,int>;

const int maxn=1e6+10;

int n,q;
int a[maxn];
int inv[maxn];
int veci[maxn];
int segt[4*maxn];
ti upit[maxn];
int res[maxn];

void update(int t,int v,int ind=1,int l=1,int r=n){
    if(l==r){
        segt[ind]=v;
        return;
    }
    int mid=l+(r-l)/2;
    if(t<=mid) update(t,v,2*ind,l,mid);
    else update(t,v,2*ind+1,mid+1,r);
    segt[ind]=segt[2*ind]+segt[2*ind+1];
}

int qry(int tl,int tr,int ind=1,int l=1,int r=n){
    if(tl>tr) return 0;
    if(tl<=l && r<=tr) return segt[ind];
    int mid=l+(r-l)/2;
    int ret=0;
    if(tl<=mid) ret+=qry(tl,tr,2*ind,l,mid);
    if(tr>mid) ret+=qry(tl,tr,2*ind+1,mid+1,r);
    return ret;
}

int pronadji(int x,int ind=1,int l=1,int r=n){
    if(l==r) return l;
    int mid=l+(r-l)/2;
    if(segt[2*ind]>=x) return pronadji(x,2*ind,l,mid);
    else return pronadji(x-segt[2*ind],2*ind+1,mid+1,r);
}

bool pomeri(){
    int lik=pronadji(n/2+1);
    int kraj=inv[lik]+qry(lik,lik)-1;
    int prosli=inv[lik]+n/2+1-qry(1,lik-1)-1;
    if(qry(a[prosli],a[prosli])!=0) return true;
    update(lik,n/2+1-qry(1,lik-1)-1);
    int tren=veci[prosli];
    while(tren<=kraj){
        update(a[prosli],tren-prosli);
        prosli=tren;
        tren=veci[tren];
    }
    update(a[prosli],kraj+1-prosli);
    return false;
}

void solve(){
    cin>>n>>q;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        inv[a[i]]=i;
    }
    for(int i=1;i<=q;i++){
        int t,ind;
        cin>>t>>ind;
        upit[i]={t,ind,i};
    }
    sort(upit+1,upit+q+1);
    stack<int> stek;
    for(int i=n;i>0;i--){
        while(!stek.empty() && a[stek.top()]<a[i]) stek.pop();
        if(stek.empty()) veci[i]=n+1;
        else veci[i]=stek.top();
        stek.push(i);
    }

    int tren=1;
    int prosli=-1;
    while(tren<=n/2){
        if(prosli!=-1){
            update(a[prosli],tren-prosli);
        }
        prosli=tren;
        tren=veci[tren];
    }
    update(a[prosli],n/2+1-prosli);
    
    tren=n/2+1;
    prosli=-1;
    while(tren<=n){
        if(prosli!=-1) update(a[prosli],tren-prosli);
        prosli=tren;
        tren=veci[tren];
    }
    update(a[prosli],n+1-prosli);

    int tu=0;
    while(get<0>(upit[tu])==0){
        res[get<2>(upit[tu])]=a[get<1>(upit[tu])];
        tu++;
    }

    for(int t=1;tu<=q;t++){
        while(tu<=q && t>=get<0>(upit[tu])){
            auto [t,x,ind]=upit[tu];
            
            int gde=pronadji(x);
            int klk=x-qry(1,gde-1)-1;
            res[ind]=a[inv[gde]+klk];

            tu++;
        }
        if(pomeri()) t=1e9+10;
    }
    for(int i=1;i<=q;i++){
        cout<<res[i]<<"\n";
    }
}

int main(){
    ios;
    int t=1;
    //cin>>t;
    while(t--) solve();
    return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 308 ms 20004 KB Output is correct
2 Correct 323 ms 27240 KB Output is correct
3 Correct 323 ms 26280 KB Output is correct
4 Correct 296 ms 25064 KB Output is correct
5 Correct 315 ms 26992 KB Output is correct
6 Correct 292 ms 25372 KB Output is correct
7 Correct 319 ms 27096 KB Output is correct
8 Correct 309 ms 25556 KB Output is correct
9 Correct 294 ms 25180 KB Output is correct
10 Correct 306 ms 25724 KB Output is correct
11 Correct 300 ms 25660 KB Output is correct
12 Correct 280 ms 24532 KB Output is correct
13 Correct 301 ms 25452 KB Output is correct
14 Correct 304 ms 26176 KB Output is correct
15 Correct 314 ms 26252 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 235 ms 24908 KB Output is correct
18 Correct 265 ms 24660 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 336 KB Output is correct

Subtask #2
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 417 ms 26444 KB Output is correct
2 Correct 368 ms 27428 KB Output is correct
3 Correct 377 ms 22056 KB Output is correct
4 Correct 312 ms 22220 KB Output is correct
5 Correct 353 ms 22652 KB Output is correct
6 Correct 313 ms 22328 KB Output is correct
7 Correct 371 ms 27672 KB Output is correct
8 Correct 351 ms 26716 KB Output is correct
9 Correct 328 ms 23356 KB Output is correct
10 Correct 344 ms 27132 KB Output is correct
11 Correct 300 ms 22684 KB Output is correct
12 Correct 301 ms 22940 KB Output is correct
13 Correct 331 ms 27260 KB Output is correct
14 Correct 310 ms 23592 KB Output is correct
15 Correct 333 ms 27728 KB Output is correct
16 Correct 18 ms 4812 KB Output is correct
17 Correct 234 ms 27340 KB Output is correct
18 Correct 312 ms 20684 KB Output is correct
19 Correct 54 ms 8100 KB Output is correct
20 Correct 78 ms 9728 KB Output is correct

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 91 ms 5540 KB Output is correct
2 Correct 67 ms 6708 KB Output is correct
3 Correct 79 ms 6400 KB Output is correct
4 Correct 47 ms 6180 KB Output is correct
5 Correct 70 ms 6344 KB Output is correct
6 Correct 59 ms 6064 KB Output is correct
7 Correct 63 ms 6296 KB Output is correct
8 Correct 70 ms 6112 KB Output is correct
9 Correct 61 ms 6200 KB Output is correct
10 Correct 45 ms 5956 KB Output is correct
11 Correct 46 ms 6044 KB Output is correct
12 Correct 43 ms 5972 KB Output is correct
13 Correct 48 ms 6076 KB Output is correct
14 Correct 49 ms 6100 KB Output is correct
15 Correct 43 ms 5964 KB Output is correct
16 Correct 14 ms 3028 KB Output is correct
17 Correct 50 ms 6284 KB Output is correct
18 Correct 36 ms 4864 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct

Subtask #4
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 308 ms 20004 KB Output is correct
2 Correct 323 ms 27240 KB Output is correct
3 Correct 323 ms 26280 KB Output is correct
4 Correct 296 ms 25064 KB Output is correct
5 Correct 315 ms 26992 KB Output is correct
6 Correct 292 ms 25372 KB Output is correct
7 Correct 319 ms 27096 KB Output is correct
8 Correct 309 ms 25556 KB Output is correct
9 Correct 294 ms 25180 KB Output is correct
10 Correct 306 ms 25724 KB Output is correct
11 Correct 300 ms 25660 KB Output is correct
12 Correct 280 ms 24532 KB Output is correct
13 Correct 301 ms 25452 KB Output is correct
14 Correct 304 ms 26176 KB Output is correct
15 Correct 314 ms 26252 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 235 ms 24908 KB Output is correct
18 Correct 265 ms 24660 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 336 KB Output is correct
21 Correct 417 ms 26444 KB Output is correct
22 Correct 368 ms 27428 KB Output is correct
23 Correct 377 ms 22056 KB Output is correct
24 Correct 312 ms 22220 KB Output is correct
25 Correct 353 ms 22652 KB Output is correct
26 Correct 313 ms 22328 KB Output is correct
27 Correct 371 ms 27672 KB Output is correct
28 Correct 351 ms 26716 KB Output is correct
29 Correct 328 ms 23356 KB Output is correct
30 Correct 344 ms 27132 KB Output is correct
31 Correct 300 ms 22684 KB Output is correct
32 Correct 301 ms 22940 KB Output is correct
33 Correct 331 ms 27260 KB Output is correct
34 Correct 310 ms 23592 KB Output is correct
35 Correct 333 ms 27728 KB Output is correct
36 Correct 18 ms 4812 KB Output is correct
37 Correct 234 ms 27340 KB Output is correct
38 Correct 312 ms 20684 KB Output is correct
39 Correct 54 ms 8100 KB Output is correct
40 Correct 78 ms 9728 KB Output is correct
41 Correct 91 ms 5540 KB Output is correct
42 Correct 67 ms 6708 KB Output is correct
43 Correct 79 ms 6400 KB Output is correct
44 Correct 47 ms 6180 KB Output is correct
45 Correct 70 ms 6344 KB Output is correct
46 Correct 59 ms 6064 KB Output is correct
47 Correct 63 ms 6296 KB Output is correct
48 Correct 70 ms 6112 KB Output is correct
49 Correct 61 ms 6200 KB Output is correct
50 Correct 45 ms 5956 KB Output is correct
51 Correct 46 ms 6044 KB Output is correct
52 Correct 43 ms 5972 KB Output is correct
53 Correct 48 ms 6076 KB Output is correct
54 Correct 49 ms 6100 KB Output is correct
55 Correct 43 ms 5964 KB Output is correct
56 Correct 14 ms 3028 KB Output is correct
57 Correct 50 ms 6284 KB Output is correct
58 Correct 36 ms 4864 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 0 ms 340 KB Output is correct
61 Correct 543 ms 40724 KB Output is correct
62 Correct 568 ms 40628 KB Output is correct
63 Correct 545 ms 39000 KB Output is correct
64 Correct 439 ms 38364 KB Output is correct
65 Correct 473 ms 39920 KB Output is correct
66 Correct 437 ms 38360 KB Output is correct
67 Correct 440 ms 39552 KB Output is correct
68 Correct 442 ms 38156 KB Output is correct
69 Correct 444 ms 38188 KB Output is correct
70 Correct 434 ms 37804 KB Output is correct
71 Correct 392 ms 36808 KB Output is correct
72 Correct 405 ms 37444 KB Output is correct
73 Correct 409 ms 37356 KB Output is correct
74 Correct 422 ms 38460 KB Output is correct
75 Correct 418 ms 38472 KB Output is correct
76 Correct 16 ms 5204 KB Output is correct
77 Correct 291 ms 35956 KB Output is correct
78 Correct 329 ms 33252 KB Output is correct
79 Correct 1 ms 340 KB Output is correct
80 Correct 0 ms 340 KB Output is correct