Submission #1274770

#	Time	Username	Problem	Language	Result	Execution time	Memory
1274770		MisterReaper	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	32 ms	4340 KiB

Main

// File vegetables4.cpp created on 30.09.2025 at 19:13:23
#include <bits/stdc++.h>

using i64 = long long;

#ifdef DEBUG 
    #include "/home/ahmetalp/Desktop/Workplace/debug.h"
#else
    #define debug(...) void(23)
#endif

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);

    int N;
    std::cin >> N;

    std::vector<int> A(N);
    for (int i = 0; i < N; ++i) {
        std::cin >> A[i];
    }

    std::vector<i64> pre(N), suf(N);
    for (int i = 0; i + 1 < N; ++i) {
        pre[i + 1] = pre[i] + std::max(0, 1 + A[i] - A[i + 1]);
    }

    for (int i = N - 1; i > 0; --i) {
        suf[i - 1] = suf[i] + std::max(0, 1 + A[i] - A[i - 1]);
    }

    i64 ans = i64(1E18);
    for (int i = 0; i < N; ++i) {
        ans = std::min(ans, std::max(pre[i], suf[i]));
    }

    std::cout << ans << '\n';

    return 0;
}

• Subtask 1: 40 / 40
• Subtask 2: 60 / 60