Submission #752308

#	Time	Username	Problem	Language	Result	Execution time	Memory
752308		GrindMachine	Sterilizing Spray (JOI15_sterilizing)	C++17	100 / 100	1280 ms	9732 KiB

sterilizing

// Om Namah Shivaya

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x, y) ((x + y - 1) / (y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i, n) for(int i = 0; i < n; ++i)
#define rep1(i, n) for(int i = 1; i <= n; ++i)
#define rev(i, s, e) for(int i = s; i >= e; --i)
#define trav(i, a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a, b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a, b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif

/*



*/

const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;

template<typename T>
struct segtree {
    // https://codeforces.com/blog/entry/18051

    /*=======================================================*/

    struct data {
        ll mx, ind, sum;
    };

    data neutral = {-inf2, -1, 0};

    data merge(data &left, data &right) {
        data curr;

        curr.mx = max(left.mx, right.mx);

        if(left.mx >= right.mx){
            curr.ind = left.ind;
        }
        else{
            curr.ind = right.ind;
        }

        curr.sum = left.sum + right.sum;

        return curr;
    }

    void create(int i, T v) {
        tr[i] = {v,i-n,v};
    }

    void modify(int i, T v) {
        tr[i] = {v,i-n,v};
    }

    /*=======================================================*/

    int n;
    vector<data> tr;

    segtree() {

    }

    segtree(int siz) {
        init(siz);
    }

    void init(int siz) {
        n = siz;
        tr.assign(2 * n, neutral);
    }

    void build(vector<T> &a, int siz) {
        rep(i, siz) create(i + n, a[i]);
        rev(i, n - 1, 1) tr[i] = merge(tr[i << 1], tr[i << 1 | 1]);
    }

    void pupd(int i, T v) {
        modify(i + n, v);
        for (i = (i + n) >> 1; i; i >>= 1) tr[i] = merge(tr[i << 1], tr[i << 1 | 1]);
    }

    data query(int l, int r) {
        data resl = neutral, resr = neutral;

        for (l += n, r += n; l <= r; l >>= 1, r >>= 1) {
            if (l & 1) resl = merge(resl, tr[l++]);
            if (!(r & 1)) resr = merge(tr[r--], resr);
        }

        return merge(resl, resr);
    }
};

void solve(int test_case)
{
    ll n,q,k; cin >> n >> q >> k;
    vector<ll> a(n+5);
    rep1(i,n) cin >> a[i];

    segtree<ll> st(n+5);
    st.build(a,n+1);

    while(q--){
        ll t; cin >> t;
        if(t == 1){
            ll i,v; cin >> i >> v;
            st.pupd(i,v);
        }
        else if(t == 2){
            ll l,r; cin >> l >> r;
            if(k == 1) conts;

            vector<pll> upd;
            
            while(true){
                auto [mx, ind, sum] = st.query(l,r);
                if(mx == 0) break;

                upd.pb({ind, mx/k});
                st.pupd(ind, 0);
            }

            for(auto [i,v] : upd){
                st.pupd(i,v);
            }
        }
        else{
            ll l,r; cin >> l >> r;
            ll ans = st.query(l,r).sum;
            cout << ans << endl;
        }
    }
}

int main()
{
    fastio;

    int t = 1;
    // cin >> t;

    rep1(i, t) {
        solve(i);
    }

    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 75 / 75