Submission #1102787

#	Time	Username	Problem	Language	Result	Execution time	Memory
1102787		vladilius	Measures (CEOI22_measures)	C++17	0 / 100	1514 ms	8012 KiB

Main

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second
 
struct ST{
    vector<ll> a;
    vector<bool> b;
    int n;
    ST(int ns){
        n = ns;
        a.resize(n + 1);
        b.resize(n + 1);
    }
    void upd(int p, ll x){
        a[p] = x;
        b[p] = 1;
    }
    void add(int l, int r, int x){
        for (int i = l; i <= r; i++){
            a[i] += x;
        }
    }
    ll get1(int p){
        return a[p];
    }
    int get2(int p){
        int sum = 0;
        for (int i = 1; i <= p; i++) sum += b[i];
        return sum;
    }
};
 
struct ST1{
    vector<ll> a;
    int n;
    ST1(int ns){
        n = ns;
        a.resize(n + 1);
    }
    void upd(int p, ll x){
        a[p] = x;
    }
    void add(int l, int r, ll x){
        for (int i = l; i <= r; i++){
            a[i] += x;
        }
    }
    ll get(){
        ll out = 0;
        for (int i = 1; i <= n; i++){
            out = max(out, a[i]);
        }
        return out;
    }
};
 
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    cout<<fixed<<setprecision(15);
    auto print = [&](ll x){
        if (x % 2 == 0){
            cout<<x / 2<<" ";
        }
        else {
            cout<<(x - 1) / 2<<".5 ";
        }
    };
    
    int n, m, d; cin>>n>>m>>d;
    vector<int> a(n + 1), b(m + 1);
    vector<pii> all = {{0, 0}};
    for (int i = 1; i <= n; i++){
        cin>>a[i];
        all.pb({a[i], i});
    }
    for (int i = 1; i <= m; i++){
        cin>>b[i];
        all.pb({b[i], i + n});
    }
    
    sort(all.begin(), all.end());
    vector<int> p(all.size());
    for (int i = 1; i < all.size(); i++) p[all[i].ss] = i;
    
    // f[i] = x[i] - d * i
    // t[i] = x[j] - x[i] + d * (i - j)
    
    int N = (int) all.size() - 1;
    ST T(N); ST1 T1(N);
    int cc = 0;
    vector<int> r(N + 1);
    set<int> st;
    auto add = [&](int x){
        cc++;
        int i = p[cc];
        ll vi = x - 1LL * d * (T.get2(i) + 1);
        T.upd(i, vi);
        T.add(i + 1, N, -d);

        auto it = st.lower_bound(i);
        if (it != st.begin()){
            int j = *prev(it);
            ll vj = T.get1(j);
            T1.add(i + 1, N, d);
            T1.add(max(i, r[j]) + 1, N, -d);
            if (vj >= vi){
                while (true){
                    auto it1 = st.upper_bound(j);
                    if (it1 == st.end()) break;
                    int k = *it1;
                    if (T.get1(k) <= vj){
                        r[j] = r[k];
                        T1.add(k, r[k], all[j].ff - all[k].ff + 1LL * d * (T.get2(k) - T.get2(j)));
                        st.erase(it1);
                        continue;
                    }
                    break;
                }
                T1.upd(i, all[j].ff - x + 1LL * d * (T.get2(i) - T.get2(j)));
                r[j] = max(r[j], i);
                return;
            }
            T1.add(i + 1, r[j], x - all[j].ff);
            r[i] = r[j];
            r[j] = i - 1;
        }
        
        T1.upd(i, 0);
        r[i] = max(r[i], i);
        while (true){
            it = st.lower_bound(i);
            if (it == st.end()) break;
            int k = *it;
            if (T.get1(k) <= vi){
                r[i] = r[k];
                T1.add(k, r[k], x - all[k].ff + 1LL * d * (T.get2(k) - T.get2(i)));
                st.erase(it);
                continue;
            }
            break;
        }
        st.insert(i);
    };
    
    for (int i = 1; i <= n; i++){
        add(a[i]);
    }
    
    for (int i = 1; i <= m; i++){
        add(b[i]);
        print(T1.get());
    }
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:90:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |     for (int i = 1; i < all.size(); i++) p[all[i].ss] = i;
      |                     ~~^~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 14
• Subtask 3: 0 / 35
• Subtask 4: 0 / 41