Submission #1306718

#	Time	Username	Problem	Language	Result	Execution time	Memory
1306718		tredsused70	Rabbit Carrot (LMIO19_triusis)	C++20	100 / 100	19 ms	1584 KiB

triusis

//#pragma GCC optimize("O3")
//#pragma GCC optimize("unroll-loops")
//#pragma GCC target("avx,avx2")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,avx,avx2")
//#pragma GCC optimize("trapv")
#include <bits/stdc++.h>

using namespace std;

#define fi first
#define se second
#define pb push_back
#define all(x) x.begin(), x.end()
#define mpr make_pair
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
const int nmax = 200011, mod = 1000000007, inf = 2000010000, key = 200003, lg = 20, block = 300;
const ll infll = 4000000000000000000;
const ld eps = 1e-9;



void solve()
{
    vector<int> dp;
    dp.pb(0);
    int n, m;
    cin >> n >> m;
    int ans = 0;
    for(int i = 1; i <= n; i++) {
        int a;
        cin >> a;
        a -= i * m;
        int lst = dp.back();
        if(lst < a)
            ans++;
        else
            dp.pb(a);
        if(a > dp[0])
            continue;
        int ind = upper_bound(all(dp), a, greater<int>()) - dp.begin();
        if(ind != dp.size())
            dp[ind] = a;
    }
    cout << ans << "\n";
    return ;
}

int main()
{
    //freopen("palpath.in","r",stdin);
    //freopen("palpath.out","w",stdout);
    ios_base::sync_with_stdio(0);cin.tie(0);
    srand(8713);
    //init();
    int t = 1;
    //cin >> t;
    //int t_ = t;
    //t = rdi();
    while(t--) {
        //cout << "Case #" << t_ - t << ": ";
        solve();
    }
    //flush();
    return 0;
}

/*

*/

• Subtask 1: 14 / 14
• Subtask 2: 21 / 21
• Subtask 3: 28 / 28
• Subtask 4: 37 / 37