Submission #1357471

#	Time	Username	Problem	Language	Result	Execution time	Memory
1357471		toast12	Mountains (IOI17_mountains)	C++20	20 / 100	1 ms	344 KiB

mountains

#include "mountains.h"
#include <bits/stdc++.h>
using namespace std;

using ll = long long;

int maximum_deevs(vector<int> y) {
	int n = y.size();
    vector<int> v(1);
    for (int i = 0; i < n; i++) v.push_back(y[i]);
    vector<int> dp(n+1, 1);
    for (int i = 1; i < n; i++) {
        ll a = v[i+1]-v[i];
        ll b = 1;
        for (int j = i+2; j <= n; j++) {
            ll c = v[j]-v[i];
            ll d = j-i;
            if (a*d > c*b) dp[j] = max(dp[j], dp[i]+1);
            else {
                a = c;
                b = d;
            }
        }
    }
    return *max_element(dp.begin(), dp.end());
}

• Subtask 1: 20 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 30
• Subtask 4: 0 / 30