Submission #422103

#	Time	Username	Problem	Language	Result	Execution time	Memory
422103		tengiz05	Semiexpress (JOI17_semiexpress)	C++17	100 / 100	14 ms	4548 KiB

semiexpress

#include <bits/stdc++.h>
using i64 = long long;
int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    i64 n, m, k, A, B, C, T;
    std::cin >> n >> m >> k;
    std::cin >> A >> B >> C >> T;
    std::vector<i64> a(m);
    for (int i = 0; i < m; i++) {
        std::cin >> a[i];
        a[i]--;
    }
    i64 ans = -1;
    std::vector<i64> seg;
    for (int i = 0; i < m - 1; i++) {
        i64 l = a[i];
        for (int j = 0; j <= k - m; j++) {
            if (l == a[i + 1] || B * a[i] + C * (l - a[i]) > T) {
                break;
            }
            i64 left = T - B * a[i] - C * (l - a[i]);
            i64 r = std::min(a[i + 1], l + left / A + 1);
            if (l == a[i]) {
                ans += r - l;
            } else {
                seg.push_back(r - l);
            }
            l = r;
        }
    }
    ans += B * a[m - 1] <= T;
    sort(seg.rbegin(), seg.rend());
    for (int i = 0; i < k - m && i < seg.size(); i++) {
        ans += seg[i];
    }
    std::cout << ans << "\n";
    return 0;
}

Compilation message (stderr)

semiexpress.cpp: In function 'int main()':
semiexpress.cpp:34:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     for (int i = 0; i < k - m && i < seg.size(); i++) {
      |                                  ~~^~~~~~~~~~~~

• Subtask 1: 18 / 18
• Subtask 2: 30 / 30
• Subtask 3: 52 / 52