Submission #764104

#	Time	Username	Problem	Language	Result	Execution time	Memory
764104		dxz05	Radio Towers (IOI22_towers)	C++17	11 / 100	4066 ms	1488 KiB

towers

#pragma GCC optimize("Ofast,O3,unroll-loops")
#pragma GCC target("avx,avx2")

#include "towers.h"
#include <bits/stdc++.h>

using namespace std;

vector<int> a;
void init(int N, vector<int> H) {
    a = H;
}

int max_towers(int L, int R, int D) {
    vector<int> dp(R + 1, 1);
    for (int i = L; i < R; i++){
        int mx = a[i + 1];
        for (int j = i + 2; j <= R; j++){
            if (a[i] <= mx - D && a[j] <= mx - D && dp[j] < dp[i] + 1) dp[j] = dp[i] + 1;
            if (mx < a[j]) mx = a[j];
        }
    }

    return *max_element(dp.begin() + L, dp.begin() + R + 1);
}

• Subtask 1: 0 / 4
• Subtask 2: 11 / 11
• Subtask 3: 0 / 12
• Subtask 4: 0 / 14
• Subtask 5: 0 / 17
• Subtask 6: 0 / 19
• Subtask 7: 0 / 23