Submission #441874

#	Time	Username	Problem	Language	Result	Execution time	Memory
441874		dutch	Worst Reporter 3 (JOI18_worst_reporter3)	C++17	100 / 100	787 ms	11332 KiB

worst_reporter3

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

const int INF = 2e9, MAXN = 5e5;

int n, q, d[MAXN], s[MAXN];

int search(int x, int p){
	int i = -1; p -= x;
	for(int j=1<<20; j/=2; )
		if(i+j < n && -i-j-x%s[i+j] > p) i += j;
	return i;
}

signed main(){
	cin.tie(0)->sync_with_stdio(0);
	cin >> n >> q;
	for(int i=0; i<n; ++i) cin >> d[i];

	fill(s, s+n, INF);
	s[0] = d[0];

	for(int i=1; i<n && s[i-1] < INF; ++i)
		s[i] = ((d[i] + s[i-1] - 1) / s[i-1]) * s[i-1];

	while(q--){
		int x, l, r; cin >> x >> l >> r;
		cout << search(x, l) - search(x, r+1) + (l <= x && x <= r) << '\n';
	}
}

• Subtask 1: 7 / 7
• Subtask 2: 12 / 12
• Subtask 3: 81 / 81