Submission #776372

#	Time	Username	Problem	Language	Result	Execution time	Memory
776372		Hacv16	Sterilizing Spray (JOI15_sterilizing)	C++17	80 / 100	5053 ms	3740 KiB

sterilizing

#include <bits/stdc++.h>
using namespace std;

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

typedef long long ll;
const int MAX = 1e5 + 15;

ll n, q, k, v[MAX], seg[4 * MAX];

void build(int p, int l, int r){
	if(l == r){
		seg[p] = v[l];
		return;
	}

	int m = (l + r) >> 1, e = 2 * p, d = e + 1;
	build(e, l, m); build(d, m + 1, r);

	seg[p] = seg[e] + seg[d];
}

ll query(int a, int b, int p, int l, int r){
	if(a > r || b < l) return 0;
	if(a <= l && r <= b) return seg[p];

	int m = (l + r) >> 1, e = 2 * p, d = e + 1;
	return query(a, b, e, l, m) + query(a, b, d, m + 1, r);
}

void update(int i, ll x, int p, int l, int r){
	if(i > r || i < l) return;
	if(l == r){
		seg[p] = x;	
		return;
	}

	int m = (l + r) >> 1, e = 2 * p, d = e + 1;
	update(i, x, e, l, m); update(i, x, d, m + 1, r);

	seg[p] = seg[e] + seg[d];
}

void spray(int a, int b, int p, int l, int r){
	if(seg[p] == 0 || a > r || b < l) return;
	if(l == r){ seg[p] /= k; return; }

	int m = (l + r) >> 1, e = 2 * p, d = e + 1;
	spray(a, b, e, l, m); spray(a, b, d, m + 1, r);

	seg[p] = seg[e] + seg[d];
}

int32_t main(void){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	cin >> n >> q >> k;

	for(int i = 1; i <= n; i++)
		cin >> v[i];

	build(1, 1, n);

	while(q--){
		int op; cin >> op;

		if(op == 1){
			ll i, x; cin >> i >> x;
			update(i, x, 1, 1, n);

		}else if(op == 2){
			ll l, r; cin >> l >> r;
			spray(l, r, 1, 1, n);

		}else{
			ll l, r; cin >> l >> r;
			cout << query(l, r, 1, 1, n) << '\n';
		}
	}

	exit(0);
}

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