Submission #1153142

#	Time	Username	Problem	Language	Result	Execution time	Memory
1153142		Zero_OP	Candies (JOI18_candies)	C++20	0 / 100	2 ms	576 KiB

candies

#include <bits/stdc++.h>

using namespace std;

//loops (warning : long long)
#define FOR(i, l, r) for(int i = (l); i < (r); ++i)
#define ROF(i, r, l) for(int i = (r - 1); i >= l; --i)

//pairs, tuples
#define mp make_pair
#define mt make_tuple
#define ff first
#define ss second

//vectors
#define all(v) begin(v), end(v)
#define rall(v) rbegin(v), rend(v)
#define pb push_back
#define eb emplace_back
#define sum_of(v) accumulate(all(v), 0ll)
#define sz(v) (int)v.size()
#define compact(v) v.erase(unique(all(v)), end(v))

//binary search
#define lwb lower_bound
#define upb upper_bound

//other stuffs
#define dbg(x) "[" #x " = " << (x) << "]"
#define file(task) if(fopen(task".inp", "r")){ freopen(task".inp", "r", stdin); freopen(task".out", "w", stdout); }

template<typename T>
bool minimize(T& a, const T& b){
    if(a > b) return a = b, true;
    return false;
}

template<typename T>
bool maximize(T& a, const T& b){
    if(a < b) return a = b, true;
    return false;
}

using ll = long long;
using ull = unsigned long long;
using ld = long double;
using db = double;
using pi = pair<int, int>;
using pl = pair<ll, ll>;

using vi = vector<int>;
using vb = vector<bool>;
using vl = vector<ll>;
using vpi = vector<pi>;
using vpl = vector<pl>;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

const int MAX = 2e5 + 5;

int N, A[MAX];
ll val[MAX], ans[MAX];
set<int> online;

void testcase(int ntestcase){
    cin >> N;
    FOR(i, 0, N) cin >> A[i], val[i] = A[i];

    multiset<pair<ll, int>> deltas;
    FOR(i, 0, N) {
        deltas.insert(mp(A[i], i));
        online.insert(i);
    }

    ll sum = 0;
    FOR(i, 1, (N+1)/2 + 1){
        pair<ll, int> best = *deltas.rbegin(); deltas.erase(prev(deltas.end()));
        sum += best.first;
        ans[i] = sum;

        set<int>::iterator b = online.find(best.second);

        ll earn = 0;
        if(b != online.begin()){
            int L = *prev(b);
            earn += val[L];
            deltas.erase(mp(val[L], L));
            online.erase(L);
        }

        if(next(b) != online.end()){
            int R = *next(b);
            earn += val[R];
            deltas.erase(mp(val[R], R));
            online.erase(R);
        }

        val[best.second] = earn - best.first;
        deltas.insert(mp(val[best.second], best.second));
    }

    FOR(i, 1, (N+1)/2 + 1){
        cout << ans[i] << '\n';
    }
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

#ifdef LOCAL
    freopen("task.inp", "r", stdin);
    freopen("task.out", "w", stdout);
#endif // LOCAL

    int T = 1;
//    cin >> T;
    FOR(i, 0, T) testcase(i);

    return 0;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 92