Submission #654234

#	Time	Username	Problem	Language	Result	Execution time	Memory
654234		Hanksburger	Worst Reporter 3 (JOI18_worst_reporter3)	C++17	100 / 100	653 ms	25300 KiB

worst_reporter3

#include <bits/stdc++.h>
#define int long long
using namespace std;
int a[500005], n, q;
int f(int t, int x)
{
    int l=0, r=n+1;
    while (l<r)
    {
        int m=(l+r)/2;
        if (t/a[m]*a[m]-m<=x)
            r=m;
        else
            l=m+1;
    }
    return n-r+2;
}
signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> q;
    a[0]=1;
    for (int i=1; i<=n; i++)
    {
        cin >> a[i];
        a[i]=((a[i]-1)/a[i-1]+1)*a[i-1];
    }
    for (int i=1; i<=q; i++)
    {
        int t, l, r;
        cin >> t >> l >> r;
        cout << f(t, r)-f(t, l-1) << '\n';
    }
}

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