Submission #836201

#	Time	Username	Problem	Language	Result	Execution time	Memory
836201		tengiz05	Radio Towers (IOI22_towers)	C++17	4 / 100	701 ms	2124 KiB

towers

#include "towers.h"

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

vector<int> A, B, H;
int k;
int n;
void init(int N, vector<int> h) {
    n = N;
    k = n - 1;
    H = h;
    for (int i = 0; i < n - 1; i++) {
        if (h[i] < h[i + 1]) {
            A.push_back(h[i]);
        } else {
            k = i;
            break;
        }
    }
    for (int i = n - 1; i > 0; i--) {
        if (h[i] < h[i - 1]) {
            B.push_back(h[i]);
        }
    }
}

int max_towers(int L, int R, int D) {
    int l = upper_bound(A.begin(), A.end(), H[k] - D) - A.begin();
    int r = upper_bound(B.begin(), B.end(), H[k] - D) - B.begin();
    r = n - r;
    int a = max(0, l - L);
    int b = max(0, R - r + 1);
    if (a > 0 && b > 0) {
        return 2;
    } else {
        return 1;
    }
}

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