Submission #476484

#	Time	Username	Problem	Language	Result	Execution time	Memory
476484		neki	Index (COCI21_index)	C++14	Compilation error	0 ms	0 KiB

index

#include <bits/stdc++.h>
#define ll int
#define loop(i, a, b) for(ll i=a;i<b;++i)
#define pool(i, a, b) for(ll i=a-1;i>=b;--i)
#define fore(i, a) for(auto&& i:a)
#define fi first
#define se second
#define ps(a) push_back(a)
#define pb(a) pop_back(a)
#define eb(...) emplace_back(__VA_ARGS__)
#define sc scanf
#define vc vector
#define lb lower_bound
#define ub upper_bound
#define all(a) a.begin(), a.end()
#define llmax LLONG_MAX/2
#define llmin -LLONG_MAX/2
using namespace std;
#define mn 500100
#define par pair<ll, ll>
#define ld long double
#define mod 1000000007

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    ll n, q;cin >> n >> q;
    
    vc<vc<ll>> tr(2 * n);
    loop(i, 0, n) {ll t;cin >> t;tr[i+n].eb(t);}
    pool(i, n, 1) tr[i].resize(tr[i * 2].size() + tr[i * 2 + 1].size());
    pool(no, n, 1) merge(all(tr[no * 2]), all(tr[no * 2 +1]), tr[no].begin());
    
    vc<vc<ll>> prno(q);
    
    loop(i, 0, q){
        ll ql, qr;cin >> ql >> qr;--ql;
        r[i]=qr-ql;
        for(ql+=n, qr+=n;ql<qr;ql>>=1, qr>>=1){
            if(ql&1) prno[i].ps(ql++);
            if(qr&1) prno[i].ps(--qr);
        }
    }
    
    vc<ll> l(q, 1), r(q, n), mid(q);
    while(1){
        vc<ll> act;
        loop(i, 0, q) if(l[i]<r[i]) act.ps(i), mid[i]=(l[i]+r[i]+1)/2;
        if(act.size()==0) break;
        sort(all(act), [&](ll a, ll b){return mid[a]>mid[b];});
        
        vc<vc<ll>> ques(2 * n);
        vc<ll> sum(q, 0);
        fore(i, act){
            fore(v, prno[i]) ques[v].eb(i);
        }
        
        loop(i, 1, 2 * n) if(ques[i].size()){
            ll k=tr[i].size()
            loop(j, 0, k) while(ques[i].size() and tr[i][j]>=mid[ques[i].back()]){
                sum[ques[i].back()]+=k-j;
                ques[i].pop_back();
            } 
        }
        
        fore(i, act){
            if(mid[i]<=sum[i]) l[i]=mid[i];
            else r[i]=mid[i]-1;
        }
    }
    loop(i, 0, q) cout << l[i] << endl;
}

Compilation message (stderr)

index.cpp: In function 'int main()':
index.cpp:38:9: error: 'r' was not declared in this scope; did you mean 'qr'?
   38 |         r[i]=qr-ql;
      |         ^
      |         qr
index.cpp:3:23: error: expected ',' or ';' before 'for'
    3 | #define loop(i, a, b) for(ll i=a;i<b;++i)
      |                       ^~~
index.cpp:60:13: note: in expansion of macro 'loop'
   60 |             loop(j, 0, k) while(ques[i].size() and tr[i][j]>=mid[ques[i].back()]){
      |             ^~~~
index.cpp:60:18: error: 'j' was not declared in this scope
   60 |             loop(j, 0, k) while(ques[i].size() and tr[i][j]>=mid[ques[i].back()]){
      |                  ^
index.cpp:3:34: note: in definition of macro 'loop'
    3 | #define loop(i, a, b) for(ll i=a;i<b;++i)
      |                                  ^