Submission #526807

#	Time	Username	Problem	Language	Result	Execution time	Memory
526807		ac2hu	Sterilizing Spray (JOI15_sterilizing)	C++14	80 / 100	5089 ms	13204 KiB

sterilizing

#include <bits/stdc++.h>
#ifdef DEBUG
#include "../templates/debug.h"
#else 
#define deb(x...)
#endif
using namespace std;
#define int long long 
const int N = 1e5 + 10;
int n,q,k;
int a[N];
struct node{
	int mx, sum;
	bool checked = false;
} t[4*N];
node nulln = {0,0,false};
node merge(node a, node b){
	node ans;
	ans.mx = max(a.mx,b.mx);
	ans.sum = a.sum + b.sum;
    ans.checked = false;
	return ans;
}
void push(int v,int tl,int tr){
    // deb(v,tl,tr);
	if(!t[v].checked)return;
	t[v].checked = false;
	if(tl != tr){
		t[v*2] = t[v*2 + 1] = {0,0,true};
	}
}
void propagate(int v,int l,int r){
	if(t[v].mx < k){
		t[v] = {0,0,true};
	}
	else if(l == r){
		t[v].mx /= k;
		t[v].sum /= k;
	}
	else{
        push(v,l,r);
		int tm = (l + r)/2;
		propagate(v*2,l,tm);
		propagate(v*2 + 1,tm + 1,r);
		t[v] = merge(t[v*2],t[v*2 + 1]);
	}
}
void build(int v,int tl,int tr){
	if(tl == tr)
		t[v] = {a[tl],a[tl]};
	else{
        // push(v,tl,tr);
		int tm = (tl + tr)/2;
		build(v*2,tl,tm);
		build(v*2 + 1,tm + 1,tr);
		t[v] = merge(t[v*2],t[v*2  + 1]);
	}
}
int query(int l,int r,int v, int tl,int tr){
    // deb(l,r,v,tl,tr);
	if(l > r)
		return 0;
	else if(l == tl && r == tr){
		return t[v].sum;
    }
	else{
        // assert(tl != tr);
		int tm = (tl + tr)/2;
        push(v,tl,tr);
		return query(l,min(r,tm),v*2,tl,tm) + query(max(l,tm + 1),r,v*2 + 1,tm + 1,tr);
	}
}
void update1(int idx,int val, int v,int tl,int tr){
	if(tl == tr)
		t[v] = {val,val};
	else{
        push(v,tl,tr);
		int tm = (tl + tr)/2;
		if(idx <= tm)
			update1(idx,val,v*2,tl,tm);
		else
			update1(idx,val,v*2 + 1,tm + 1,tr);
		t[v] = merge(t[v*2],t[v*2 + 1]);
    }
}
void update2(int l,int r,int v,int tl,int tr){
	if(l > r)
		return;
	else if(l == tl && r == tr){
		propagate(v,tl,tr);
	}
	else{
        push(v,tl,tr);
		int tm = (tl + tr)/2;
		update2(l,min(r,tm),v*2,tl,tm);
		update2(max(l,tm + 1),r,v*2 + 1,tm + 1,tr);
		t[v] = merge(t[v*2], t[v*2 + 1]);
	}
}
signed main() {
	iostream::sync_with_stdio(false);
	cin.tie(nullptr);cout.tie(nullptr);
	cin >> n >> q >> k;
	for(int i = 0;i<n;i++)cin >> a[i];
	build(1,0,n-1);
    while(q--){
        // break;
        int t;cin >> t;
        if(t == 1){
            int a,b;cin >> a >> b;
            a--;
            update1(a,b,1,0,n-1);
        }
        else if(t == 2){
            int l,r;cin >> l >> r;
            l--;r--;
            update2(l, r, 1,0,n-1);
        }
        else{
            int l,r;cin >> l >> r;
            l--;r--;
            cout << query(l,r,1,0,n-1) << "\n";
            // break;
        }
        // for(int i = 0;i<n;i++)
        //     cout << query(i,i,1,0,n-1) << " ";
        // cout << "\n";
    }
}

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