Submission #1235586

#	Time	Username	Problem	Language	Result	Execution time	Memory
1235586		Aisha	Maxcomp (info1cup18_maxcomp)	C++20	0 / 100	1 ms	328 KiB

maxcomp

#include "bits/stdc++.h"

using namespace std;

#define int long long

signed main() {
    int n, m;
    cin >> n >> m;

    vector <int> a(m + 1);
    for (int i = 1; i <= m; i ++) cin >> a[i];

    vector <vector <int>> dp(m + 1, vector <int> (4));
    // max ind min ind
    int ans = -1; 

    dp[1] = {a[1], 1, a[1], 1};
    for (int i = 2; i <= m; i ++) {
        dp[i] = {a[i], i, a[i], i};
        if (dp[i][0] < dp[i - 1][0]) dp[i][0] = dp[i - 1][0], dp[i][1] = dp[i - 1][1];
        if (dp[i][2] > dp[i - 1][2]) dp[i][2] = dp[i - 1][2], dp[i][3] = dp[i - 1][3];
       // cout << dp[i][0] << ' ' << dp[i][1] << ' ' << dp[i][2] << ' ' << dp[i][3] << endl;
        ans = max({ans, dp[i][0] - a[i] - i + dp[i][1] - 1, a[i] - dp[i][2] - i + dp[i][3] - 1, dp[i][0] - dp[i][2] - abs(dp[i][1] - dp[i][3]) - 1});
    }

    cout << ans << endl;

    return 0;
}

• Subtask 1: 0 / 15
• Subtask 2: 0 / 15
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40