Submission #1059675

#	Time	Username	Problem	Language	Result	Execution time	Memory
1059675		becaido	Radio Towers (IOI22_towers)	C++17	14 / 100	637 ms	2132 KiB

towers

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,popcnt,sse4,abm")
#include <bits/stdc++.h>
using namespace std;

#ifndef WAIMAI
#include "towers.h"
#else
#include "stub.cpp"
#endif

#ifdef WAIMAI
#define debug(HEHE...) cout << "[" << #HEHE << "] : ", dout(HEHE)
void dout() {cout << '\n';}
template<typename T, typename...U>
void dout(T t, U...u) {cout << t << (sizeof...(u) ? ", " : ""), dout(u...);}
#else
#define debug(...) 7122
#endif

#define ll long long
#define Waimai ios::sync_with_stdio(false), cin.tie(0)
#define FOR(x,a,b) for (int x = a, I = b; x <= I; x++)
#define pb emplace_back
#define F first
#define S second

const int SIZE = 1e5 + 5;

int n;
int a[SIZE], pre[SIZE];

void init(int N, vector<int> H) {
    n = N;
    FOR (i, 1, n) a[i] = H[i - 1];
    FOR (i, 2, n - 1) pre[i] = pre[i - 1] + (a[i] < min(a[i - 1], a[i + 1]));
}

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

/*
in1
7 3
10 20 60 40 50 30 70
1 5 10
2 2 100
0 6 17
out1
3
1
2
*/

• 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