Submission #1161783

#	Time	Username	Problem	Language	Result	Execution time	Memory
1161783		Izzy	Snowball (JOI21_ho_t2)	C++20	100 / 100	66 ms	8408 KiB

Main

#include <iostream>
#include <vector>
#include <algorithm>
#include <climits>

using namespace std;

vector<long long> minp;
vector<long long> maxp;

int find_position(long long a, long long b, int q) {
    int low = 1, high = q, mid, work = 0;

    while (low <= high) {
        mid = low + (high - low) / 2;
        if (abs(minp[mid]) + abs(maxp[mid]) < b - a) {
            work = mid;
            low = mid + 1;
        } else {
            high = mid - 1;
        }
    }
    return work;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int n, q;
    cin >> n >> q;

    vector<long long> v(n + 1);
    for (int i = 1; i <= n; i++) {
        cin >> v[i];
    }

    minp.resize(q + 1, 0);
    maxp.resize(q + 1, 0);
    long long sum = 0;

    for (int i = 1; i <= q; i++) {
        long long x;
        cin >> x;
        sum += x;
        minp[i] = min(minp[i - 1], sum);
        maxp[i] = max(maxp[i - 1], sum);
    }

    vector<long long> ans(n + 1, 0);
    for (int i = 1; i < n; i++) {
        int poz = find_position(v[i], v[i + 1], q);

        ans[i] += maxp[poz];
        ans[i + 1] += abs(minp[poz]);

        if (poz != q && maxp[poz + 1] > maxp[poz]) {
            ans[i] += (v[i + 1] - v[i]) - (abs(minp[poz]) + abs(maxp[poz]));
        }

        if (poz != q && minp[poz + 1] < minp[poz]) {
            ans[i + 1] += (v[i + 1] - v[i]) - (abs(minp[poz]) + abs(maxp[poz]));
        }
    }

    ans[1] += abs(minp[q]);
    ans[n] += abs(maxp[q]);

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

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