Submission #1123758

#	Time	Username	Problem	Language	Result	Execution time	Memory
1123758		wellthen_	Snowball (JOI21_ho_t2)	C++20	100 / 100	87 ms	8264 KiB

Main

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

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n, q;
    cin >> n >> q;
    vector<long long> v(n + 1);
    for (int i = 1; i <= n; i++)
        cin >> v[i];
    vector<long long> minq(q + 1), maxq(q + 1);
    long long sum = 0;
    for (int i = 1; i <= q; i++) {
        long long x;
        cin >> x;
        sum += x;
        minq[i] = min(minq[i - 1], sum);
        maxq[i] = max(maxq[i - 1], sum);
    }
    vector<long long> ans(n + 1);
    for (int i = 1; i < n; i++) {
        int s = 1, d = q, pos = 0;
        while (s <= d) {
            int mid = (s + d) / 2;
            if (maxq[mid] + (-minq[mid]) < v[i + 1] - v[i]) {
                pos = mid;
                s = mid + 1;
            } else {
                d = mid - 1;
            }
        }
        ans[i] += maxq[pos];
        ans[i + 1] += -minq[pos];
        if (pos != q) {
            if (maxq[pos + 1] > maxq[pos]) {
                ans[i] += (v[i + 1] - v[i]) - (maxq[pos] + (-minq[pos]));
            }
            if (minq[pos + 1] < minq[pos]) {
                ans[i + 1] += (v[i + 1] - v[i]) - (maxq[pos] + (-minq[pos]));
            }
        }
    }
    ans[1] += -minq[q];
    ans[n] += maxq[q];

    for (int i = 1; i <= n; i++)
        cout << ans[i] << '\n';

    return 0;
}

• Subtask 1: 33 / 33
• Subtask 2: 67 / 67