Submission #967881

#	Time	Username	Problem	Language	Result	Execution time	Memory
967881		12345678	Radio Towers (IOI22_towers)	C++17	14 / 100	561 ms	2116 KiB

towers

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

using namespace std;

const int nx=1e5+5;

int n, qs[nx];
vector<int> h;

void init(int N, std::vector<int> H) {
    n=N;
    h=H;
    for (int i=1; i<N-1; i++) if (h[i]<h[i-1]&&h[i]<h[i+1]) qs[i]++;
    for (int i=1; i<N; i++) qs[i]+=qs[i-1];
}

int max_towers(int L, int R, int D) {
    if (L==R) return 1;
    return qs[R-1]-qs[L]+(h[L]<h[L+1])+(h[R]<h[R-1]);
}

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