Submission #712961

#	Time	Username	Problem	Language	Result	Execution time	Memory
712961		t6twotwo	Radio Towers (IOI22_towers)	C++17	14 / 100	895 ms	1948 KiB

towers

#include "towers.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int N;
vector<int> H, pfs;
void init(int _N, vector<int> _H) {
    N = _N;
    H = _H;
    pfs.resize(N + 1);
    for (int i = 0; i < N; i++) {
        pfs[i + 1] = pfs[i];
        if ((i == 0 || H[i] < H[i - 1]) && (i == N - 1 || H[i] < H[i + 1])) {
            pfs[i + 1]++;
        }
    }
}
int max_towers(int L, int R, int D) {
    if (L == R) return 1;
    int ans = pfs[R] - pfs[L + 1];
    if (H[L] < H[L + 1]) ans++;
    if (H[R] < H[R - 1]) ans++;
    return ans;
}

• 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