Submission #602443

#TimeUsernameProblemLanguageResultExecution timeMemory
602443HanksburgerSterilizing Spray (JOI15_sterilizing)C++17
100 / 100
588 ms8336 KiB
#include <bits/stdc++.h>
using namespace std;
long long seg[400005], a[100005];
int n, q, k;
set<int> s;
void build(int i, int l, int r)
{
    if (l==r)
    {
        seg[i]=a[l];
        if (a[l])
            s.insert(l);
        return;
    }
    int mid=(l+r)/2;
    build(i*2, l, mid);
    build(i*2+1, mid+1, r);
    seg[i]=seg[i*2]+seg[i*2+1];
}
void update(int i, int l, int r, int y, int z)
{
    if (l==r)
    {
        seg[i]=a[y]=z;
        return;
    }
    int mid=(l+r)/2;
    if (y<=mid)
        update(i*2, l, mid, y, z);
    else
        update(i*2+1, mid+1, r, y, z);
    seg[i]=seg[i*2]+seg[i*2+1];
}
long long query(int i, int l, int r, int y, int z)
{
    if (y<=l && r<=z)
        return seg[i];
    int mid=(l+r)/2;
    long long res=0;
    if (l<=z && y<=mid)
        res+=query(i*2, l, mid, y, z);
    if (mid+1<=z && y<=r)
        res+=query(i*2+1, mid+1, r, y, z);
    return res;
}
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> q >> k;
    for (int i=1; i<=n; i++)
        cin >> a[i];
    build(1, 1, n);
    while (q--)
    {
        int x, y, z;
        cin >> x >> y >> z;
        if (x==1)
        {
            update(1, 1, n, y, z);
            s.erase(y);
            if (z)
                s.insert(y);
        }
        else if (x==2)
        {
            if (k>=2)
            {
                auto itr=s.lower_bound(y);
                while (itr!=s.end() && (*itr)<=z)
                {
                    int i=*itr;
                    update(1, 1, n, i, a[i]/k);
                    itr++;
                    if (!a[i])
                        s.erase(i);
                }
            }
        }
        else
            cout << query(1, 1, n, y, z) << '\n';
    }
    return 0;
}
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...