Submission #635254

#	Time	Username	Problem	Language	Result	Execution time	Memory
635254		ParsaEs	Worst Reporter 3 (JOI18_worst_reporter3)	C++14	100 / 100	497 ms	25320 KiB

worst_reporter3

//InTheNameOfGOD
//PRS;)
#pragma GCC optimize("unroll-loops", "O2", "Ofast", "O3")
#pragma GCC target("avx2", "sse", "sse2")
#include<bits/stdc++.h>
#define Fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define rep(i, l, r) for(ii i = l; i < r; i++)
#define max(x, y) (x > y ? x : y)
typedef long long ii;
using namespace std;
constexpr int xn = 5e5 + 5;
ii d[xn];
int main()
{
	Fast;
	ii n, q;
	cin >> n >> q;
	rep(i, 0, n) cin >> d[i];
	rep(i, 1, n) d[i] = ((d[i] + d[i - 1] - 1) / d[i - 1]) * d[i - 1];
	while(q--)
	{
		ii t, l, r, p1 = 0, p2 = n, p3 = 0, p4 = n;
		cin >> t >> l >> r;
		while(p1 < p2)
		{
			ii m = p1 + p2 >> 1;
			if((t / d[m]) * d[m] - m - 1 < l) p2 = m;
			else p1 = m + 1;
		}
		while(p3 < p4)
		{
			ii m = p3 + p4 >> 1;
			if((t / d[m]) * d[m] - m - 1 > r) p3 = m + 1;
			else p4 = m;
		}
		ii ans = max(0, p1 - p4);
		if(l <= t && t <= r) ans++;
		cout << ans << '\n';
	}
}

Compilation message (stderr)

worst_reporter3.cpp: In function 'int main()':
worst_reporter3.cpp:26:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   26 |    ii m = p1 + p2 >> 1;
      |           ~~~^~~~
worst_reporter3.cpp:32:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   32 |    ii m = p3 + p4 >> 1;
      |           ~~~^~~~

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