Submission #924651

#	Time	Username	Problem	Language	Result	Execution time	Memory
924651		sleepntsheep	Global Warming (NOI13_gw)	C++17	23 / 40	186 ms	12368 KiB

gw

#include <iostream>
#include <numeric>
#include <fstream>
#include <iomanip>
#include <cmath>
#include <cassert>
#include <cstring>
#include <vector>
#include <algorithm>
#include <deque>
#include <set>
#include <utility>
#include <array>
#include <complex>

using u32 = unsigned;
using i32 = int;
using i64 = long long;
using u64 = unsigned long long;
using f64 = double;
using f80 = long double;

using namespace std;
using pt = complex<f80>;
#define ALL(x) begin(x), end(x)
#define ShinLena cin.tie(nullptr)->sync_with_stdio(false);
#define N 1000005

int n, a[N], f[N], b[N] ,c ,z;

int main()
{
    ShinLena;
    cin >> n;
    for (int i = 1; i <= n; ++i) cin >> a[i];
    iota(b, b+1+n, 0);
    sort(b+1, b+1+n, [](int i, int j){ return a[i] > a[j]; });

    for (int i = 1; i <= n; ++i)
    {
        int j = b[i];
        if (!f[j-1] and !f[j+1]) ++c;
        else if (f[j-1] and f[j+1]) --c;

        if (i == n or a[j] != a[b[i]+1]) z = max(z, c);
        f[j] = 1;
    }

    cout << z;

    return 0;
}

• Subtask 1: 6 / 6
• Subtask 2: 0 / 6
• Subtask 3: 7 / 7
• Subtask 4: 10 / 10
• Subtask 5: 0 / 11