Submission #750572

#	Time	Username	Problem	Language	Result	Execution time	Memory
750572		MuntherCarrot	Sterilizing Spray (JOI15_sterilizing)	C++14	10 / 100	141 ms	5920 KiB

sterilizing

#include <bits/stdc++.h>
using namespace std;
#define ll long long
// #define int long long
#define endl '\n'


#define all(x) x.begin(),x.end()
const ll MOD = 1e9 + 7, SZ = 1e5 + 10, INF = 1e18;
int N = 1 << 18, t[1 << 19];
void upd(int i, int v){
    i += N;
    t[i] = v;
    for(i/=2;i;i/=2)
        t[i] = t[i * 2] + t[i * 2 + 1];
}
int clc(int l, int r, int i = 1, int from = 1, int to = N){
    if(from > r || to < l)
        return 0;
    if(from >= l && to <= r)
        return t[i];
    int mid = (from + to)/2;
    return clc(l, r, i*2, from, mid) + clc(l, r, i*2 + 1, mid + 1, to);
}
int32_t main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int n, q, k;
    cin >> n >> q >> k;
    int arr[n];
    set<int> st;
    for(int i=0;i<n;i++){
        cin >> arr[i];
        upd(i, arr[i]);
        if(arr[i])
            st.insert(i + 1);
    }
    while(q--){
        int t, l, r;
        cin >> t >> l >> r;
        if(t == 1){
            arr[l - 1] = r;
            upd(l - 1, r);
            if(r)
                st.insert(l);
        }
        else if(t == 3)
            cout << clc(l, r) << endl;
        else if(k != 1){
            while(l <= r){
                auto x = st.lower_bound(l);
                if(x == st.end() || *x > r)
                    break;
                arr[*x - 1] /= k;
                upd(*x - 1, arr[*x - 1]);
                if(arr[*x - 1] == 0)
                    st.erase(*x);
                l = *x + 1;
            }
        }
    }
    return 0;
}

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