Submission #465568

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
465568	2021-08-16 11:19:29	Sench2006	Exam (eJOI20_exam)	C++14	53 / 100	183 ms	98204 KiB

exam

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#include <bits/stdc++.h>
#include <unordered_map>
using namespace std;
#define ll long long
#define ar array
#define fastio ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
// --------------- SOLUTION --------------- //
const int N = 1e5+5;
int n;
int a[N], b[N];
int t[4 * N];
int next_max[N], prev_max[N];
int dp[5001][5001];
map <int, int> mp;
void pre() {
    stack<int> s;
    for (int i = 1; i <= n; ++i) {
        while (!s.empty() && a[s.top()] <= a[i])
            s.pop();
        if (s.empty())
            next_max[i] = 0;
        else
            next_max[i] = s.top();
        s.push(i);
    }
 
 
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