Submission #817764

#	Time	Username	Problem	Language	Result	Execution time	Memory
817764		Boomyday	Rabbit Carrot (LMIO19_triusis)	C++17	100 / 100	22 ms	6852 KiB

triusis

#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using ld = long double;
using db = double;
using str = string; // yay python!

using ii = pair<int,int>;
using pl = pair<ll,ll>;
using pd = pair<db,db>;

using vi = vector<int>;
using vb = vector<bool>;
using vl = vector<ll>;
using vd = vector<db>;
using vs = vector<str>;
using vii = vector<ii>;
using vpl = vector<pl>;
using vpd = vector<pd>;

#define tcT template<class T
#define tcTU tcT, class U

tcT> using V = vector<T>;
tcT, size_t SZ> using AR = array<T,SZ>;
tcT> using PR = pair<T,T>;

// pairs
#define mp make_pair
#define f first
#define s second

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

#define len(x) int((x).size())
#define bg(x) begin(x)
#define all(x) bg(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define sor(x) sort(all(x))
#define rsz resize
#define ins insert
#define ft front()
#define bk back()
#define pb push_back
#define eb emplace_back
#define pf push_front

const int MOD = 1e9+7; // 998244353;
const int MX = 2e5+5;
const ll INF = 1e18; // not too close to LLONG_MAX
const ld PI = acos((ld)-1);
const int dx[4] = {1,0,-1,0}, dy[4] = {0,1,0,-1}; // for every grid problem!!




int main(){
    std::ios::sync_with_stdio(false); cin.tie(NULL);
    ll n, J; cin >> n >> J;
    vl nums;
    F0R(i, n ){
        ll x; cin >> x;
        x = J*(i+1)-x;
        nums.pb(x);
    }

    vl bst = {0};

    trav(i, nums){
        
        if (i<0) continue;
        int bound = upper_bound(all(bst),i)-bst.begin();
        if (bound==bst.size())
            bst.pb(i);
        else(bst[bound]=min(bst[bound],i));
    }
    cout << n - (bst.size()-1);

}

Compilation message (stderr)

triusis.cpp: In function 'int main()':
triusis.cpp:79:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |         if (bound==bst.size())
      |             ~~~~~^~~~~~~~~~~~

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