제출 #928269

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
928269		Amr	Rabbit Carrot (LMIO19_triusis)	C++14	100 / 100	198 ms	17488 KiB

triusis

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define S second
#define F first
#define all(x) (x).begin(),(x).end()
#define sz size()
#define Yes cout << "YES" << endl
#define No cout << "NO" << endl
#define pb(x) push_back(x);
#define endl '\n'
#define fast ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
const int N=3e5+7;
ll INF=INT_MAX,mod=1e9+7;
int TT=1;
ll power(ll x, unsigned int y)
{
    ll res = 1;
    x = x; // % mod;
    if (x == 0) return 0;
    while (y > 0)
    {
        if (y & 1) res = (res*x)  ; // % mod;
        y = y>>1;
        x = (x*x) ; // % mod;
    }
    return res;
}
ll n , m;
ll a[N];
map<ll,int>  mp;
ll bit[N];
void upd(ll x,ll val)
{
    while(x<=n+1)
    {
        bit[x] = max(bit[x],val);
        x +=(x&(-x));
    }
    return;
}
ll get(ll x)
{
    ll res = 0;
    while(x> 0)
    {
        res = max(res,bit[x]);
        x-= (x&(-x));
    }
    return res;
}
void solve()
{
    ll ans = 0;
     cin >> n >> m;
    for(int i = 1; i <= n; i++) cin >> a[i];
    for(int i = 1; i <= n ;i++){
        a[i] -= i*m;
        mp[a[i]] = 1;
    }
    mp[0] = 1;
    ll cnt = 1;
    for(auto it: mp)
        mp[it.first] = cnt++;
    for(int i = n; i>=1; i--)
    {
        ll x = mp[a[i]];
        //cout << x << endl;
        ll y = get(x);
        upd(x,y+1);
    }
    cout << n-get(mp[0])<< endl;




}
int main(){
    //freopen("friday.in","r",stdin);
    //freopen("friday.out","w",stdout);
    fast;
    while(TT--)
        solve();

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

triusis.cpp: In function 'void solve()':
triusis.cpp:55:8: warning: unused variable 'ans' [-Wunused-variable]
   55 |     ll ans = 0;
      |        ^~~

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