Submission #1235595

#	Time	Username	Problem	Language	Result	Execution time	Memory
1235595		Aisha	Maxcomp (info1cup18_maxcomp)	C++20	0 / 100	0 ms	324 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 <int> p(m + 1);
    vector <int> s(m + 1);
    // max ind min ind
    int ans = -1; 

    p[1] = a[1] - 1;
    s[m] = a[m] + 1;
    for (int i = 2; i <= m; i ++) p[i] = max(a[i] - i, p[i - 1]);
    for (int i = m - 1; i >= 1; i --) s[i] = min(s[i + 1], a[i] + m - i + 1);
    
    for (int i = 1; i <= m; i ++) {
        ans = max(ans, p[i] - s[i]);
    }

    cout << ans << endl;

    return 0;
}

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