Submission #1206788

#	Time	Username	Problem	Language	Result	Execution time	Memory
1206788		veplsnx	Sterilizing Spray (JOI15_sterilizing)	C++20	15 / 100	34 ms	4424 KiB

sterilizing

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define ld long double
#define u128 unsigned __int128
#define i128 __int128
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define pb push_back
#define eb emplace_back
#define mt make_tuple
#define mp make_pair
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pli pair<ll, int>
#define pil pair<int, ll>
#define ff first
#define ss second

const ll inf = 9e18;
const int iinf = 2e9;
const int N = 1e5;
const ll MOD = 1e9 + 7;

class simple_seg_tree
{
private:
    vector<ll> t;
    int n;
    void build(int v, int tl, int tr, vector<int>& a){
        if (tl == tr){
            t[v] = a[tl];
            return;
        }
        int tm = tl + tr >> 1;
        build(2 * v + 1, tl, tm, a);
        build(2 * v + 2, tm + 1, tr, a);
        t[v] = t[2 * v + 1] + t[2 * v + 2];
    }
    ll query(int v, int tl, int tr, int ql, int qr){
        if (tl > qr || tr < ql){
            return 0ll;
        }
        if (ql <= tl && tr <= qr)
            return t[v];
        int tm = tl + tr >> 1;
        return query(2 * v + 1, tl, tm, ql, qr) + query(2 * v + 2, tm + 1, tr, ql, qr);
    }
    void assign(int v, int tl, int tr, int pos, int val){
        if (tl == tr){
            t[v] = val;
            return;
        }
        int tm = tl + tr >> 1;
        if (pos <= tm)
            assign(2 * v + 1, tl, tm, pos, val);
        else
            assign(2 * v + 2, tm + 1, tr, pos, val);
        t[v] = t[2 * v + 1] + t[2 * v + 2];
    }
public:
    simple_seg_tree(vector<int>& a, const int & size){
        n = size;
        t.resize(4 * n);
        build(0, 0, n - 1, a);
    }
    ll query(int l, int r){
        return query(0, 0, n - 1, l, r);
    }
    void assign(int pos, int val){
        assign(0, 0, n - 1, pos, val);
    }
};

void solution(){
    int k, n, q;
    cin >> n >> q >> k;
    vector<int> c(n);
    for (int i = 0; i < n; ++i)
        cin >> c[i];
    if (n <= 3000 && q <= 3000){
        for (int i = 0; i < q; ++i){
            int t, l, r;
            cin >> t >> l >> r;
            --l; --r;
            if (t == 1){
                ++r;
                c[l] = r;
            } else if (t == 2){
                for (int i = l; i <= r; ++i)
                    c[i] /= k;
            } else{
                ll ans = 0;
                for (int i = l; i <= r; ++i)
                    ans += c[i];
                cout << ans << '\n';
            }
        }
    } else if (k == 1){
        simple_seg_tree seg(c, n);
        for (int i = 0; i < q; ++i){
            int t, l, r;
            cin >> t >> l >> r;
            --l; --r;
            if (t == 1){
                ++r;
                seg.assign(l, r);
            } else if (t == 3){
                cout << seg.query(l, r) << '\n';
            }
        }
    }
}

signed main(/* Kurmankul Nurislam */){
    //freopen("fcolor.in", "r", stdin);
    //freopen("fcolor.out", "w", stdout);
    cin.tie(nullptr) -> sync_with_stdio(false);
    int t = 1;
    //cin >> t;
    while (t--){
        solution();
        //cout << '\n';
    }
}

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 75