Submission #158170

#	Time	Username	Problem	Language	Result	Execution time	Memory
158170		fedoseevtimofey	Worst Reporter 3 (JOI18_worst_reporter3)	C++14	7 / 100	310 ms	6056 KiB

worst_reporter3

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

const int K = 37;
int L[K], R[K];
const int N = 5e5 + 7;
int _time[N];

const ll Inf = 1e9 + 7;

signed main() {
    ios_base::sync_with_stdio(false); cin.tie(0); cout.setf(ios::fixed); cout.precision(20);
    #ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    #endif
    int n, q;
    cin >> n >> q;
    vector <int> d(n + 1);
    for (int i = 1; i <= n; ++i) cin >> d[i];   
    d[0] = 1;
    ++n;
    int m;
    {
        vector <pair <int, int>> seg;
        int lst = 0;
        for (int i = 1; i < n; ++i) {
            if (d[i] > d[lst]) {  
                seg.push_back({lst, i - 1});
                lst = i;
            }
        }
        seg.push_back({lst, n - 1});
        for (int i = 0; i < min(K, (int)seg.size()); ++i) {
            L[i] = seg[i].first;
            R[i] = seg[i].second;
        }
        m = min(K, (int)seg.size());
        _time[0] = 1;
        for (int i = 1; i < min(K, (int)seg.size()); ++i) {
            int a = L[i - 1];
            int b = L[i];
            ll t = (ll)_time[i - 1] * ((d[b] + d[a] - 1) / d[a]);
            t = min(t, Inf);
            _time[i] = t;
        }
    }
    function <int(int, int)> getPos = [&] (int id, int t) { 
        if (id == 0) return t;
        for (int i = 0; i < m; ++i) {
            if (L[i] <= id && id <= R[i]) {
                if (id == L[i]) {
                    int nt = t - (t % _time[i]);
                    return getPos(id - 1, nt) - 1;
                } else {
                    return getPos(L[i], t) - (id - L[i]);
                }
            }
        }
        assert(false);
    };

    while (q--) {
        int t, l, r;
        cin >> t >> l >> r;
        int ans = 0;
        for (int i = 0; i < m; ++i) {
            ll pl = getPos(L[i], t), pr = getPos(R[i], t);
            swap(pl, pr);
            pl = max(pl, (ll)l);
            pr = min(pr, (ll)r);
            ans += max(0LL, pr - pl + 1);
        }
        cout << ans << '\n';
    }
}

• Subtask 1: 7 / 7
• Subtask 2: 0 / 12
• Subtask 3: 0 / 81