Submission #1369208

#	Time	Username	Problem	Language	Result	Execution time	Memory
1369208		leolin0214	송신탑 (IOI22_towers)	C++20	14 / 100	186 ms	1948 KiB

towers

#include "towers.h"

#include <iostream>
#include <vector>
#include <algorithm>
#include <numeric>

#define ff first
#define ss second
#define pii pair<int, int>

using namespace std;

vector<int> p;
vector<int> h;

void init(int N, std::vector<int> H) {
    int n = N;
    H.insert(H.begin(), n);
    H.push_back(n);
    
    h = H;

    p.resize(n+1);

    for (int i=2; i<=n-1; i++) {
        if (H[i] < min(H[i+1], H[i-1])) {
            p[i]++;
        }
    }

    partial_sum(p.begin(), p.end(), p.begin());
}

int max_towers(int L, int R, int D) {
    if (L == R) return 1;
    L++, R++;
    int ans = p[R-1] - p[L];
    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