Submission #1241994

#	Time	Username	Problem	Language	Result	Execution time	Memory
1241994		datluong_04	Rabbit Carrot (LMIO19_triusis)	C++20	100 / 100	22 ms	5116 KiB

triusis

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define maxn 200005 
#define FOR(i , a , b) for(int i = a ; i <= b; i++)
#define FAST ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

ll a[maxn] , b[maxn] , c[maxn];

int main(){
    FAST;
    int n;
    ll M;
    cin >> n >> M;
    FOR(i , 1 , n) cin >> a[i];
    int sz = 0;
    FOR(i , 1 , n) if(M * i >= a[i]) c[++sz] = M * i - a[i];
    FOR(i , 1 , sz) b[i] = 2e18;
    int ans = 0;
    FOR(i , 1 , sz){
        int k = upper_bound(b + 1 , b + sz + 1, c[i]) - b;
        b[k] = c[i];
        ans = max(ans , k);
    }

    cout << n - ans;
}

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