Submission #329216

#	Time	Username	Problem	Language	Result	Execution time	Memory
329216		iliccmarko	Sterilizing Spray (JOI15_sterilizing)	C++14	100 / 100	823 ms	10988 KiB

sterilizing

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"
#define INF 1000000000
#define LINF 1000000000000000LL
#define pb push_back
#define all(x) x.begin(), x.end()
#define len(s) (int)s.size()
#define test_case { int t; cin>>t; while(t--)solve(); }
#define input(n, v) {for(int i = 0;i<n;i++) cin>>v[i];}
#define output(n, v) {for(int i = 0;i<n;i++) cout<<v[i]<<" "; cout<<endl;}
#define single_case solve();
#define line cout<<"------------"<<endl;
#define ios { ios_base::sync_with_stdio(false); cin.tie(NULL); }
using namespace std;
int n, q, k;
const int N = 1e5 + 5;
ll sum[4*N];
vector<ll> a(N);

ll get_sum(int node, int l, int r, int i, int j)
{
    if(i>r||j<l) return 0;
    if(i>=l&&j<=r) return sum[node];
    int mid = (i+j)/2;
    return get_sum(node*2+1, l, r, i, mid) + get_sum(node*2+2, l, r, mid+1, j);
}

void update(int node, int l, int r, int pos, int x)
{
    if(l==r)
    {
        sum[node] = x;
        return;
    }
    int mid = (l+r)/2;
    if(pos>mid)
        update(node*2+2, mid+1, r, pos, x);
    else
        update(node*2+1, l, mid, pos, x);
    sum[node] = sum[node*2+1] + sum[node*2+2];
}

ll build_sum(int node, int l, int r)
{
    if(l==r)
    {
       return sum[node] = a[l];
    }
    int mid = (l+r)/2;
    return sum[node] = build_sum(node*2+1, l, mid) + build_sum(node*2+2, mid+1, r);
}


int main()
{
    ios
    cin>>n>>q>>k;
    for(int i = 0;i<n;i++)
        cin>>a[i];
    //cout<<11111<<endl;
    set<ll> alive;
    for(ll i = 0;i<n;i++)
        if(a[i])
        alive.insert(i);
    build_sum(0, 0, n-1);
    //cout<<2222<<endl;
    while(q--)
    {
        ll s, t, u;
        cin>>s>>t>>u;
        t--;
        u--;
        if(s==1)
        {
            // a-ti tanjir na b
            u++;
            //cout<<a[t]<<" "<<u<<endl;
            if(!a[t]&&u)
            alive.insert(t);
            if(a[t]&&!u)
                alive.erase(t);
            a[t] = u;
            update(0, 0, n-1, t, u);
        }
        else if(s==2)
        {
            // sprej
            if(k==1) continue;
            vector<int> s;
            for(int x : alive)
            {
                //cout<<x<<" ";
                //cout<<x<<" ";
                //line
                //cout<<x<<" "<<a[x]<<endl;
                if(x<t||x>u) continue;
                //cout<<x<<" "<<a[x]<<endl;
                a[x] /= k;
                if(!a[x])
                    s.pb(x);
                update(0, 0, n-1, x, a[x]);
            }
            for(int x : s)
                alive.erase(x);
            //cout<<endl;
            //cout<<endl;
        }
        else{
            // ispisi sumu od l do r
            //cout<<u<<" "<<t<<endl;
            cout<<get_sum(0, t, u, 0, n-1);
                cout<<endl;
        }
    }




    return 0;
}
/*
5 10 3
27 27 27 27 27
2 2 4
2 1 5
2 3 3
2 3 5
1 4 9
1 5 9
3 1 5
3 1 5
3 1 5
3 1 5
*/

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