Submission #499915

#	Time	Username	Problem	Language	Result	Execution time	Memory
499915		RandomLB	Rabbit Carrot (LMIO19_triusis)	C++17	100 / 100	26 ms	4536 KiB

triusis

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<ll, ll> pll;
typedef pair<double, double> point;
typedef tuple<int, int, int> tp;  //-------LL
typedef unordered_set<ll> uset;
typedef priority_queue<pll, vector<pll>, greater<pll>> djk;
typedef long long C;
typedef complex<C> P;
#define pb push_back
#define ms(a,b) memset(a,b,sizeof(a))
#define maxE(a) *max_element(a, a+sizeof(a)/sizeof(a[0]))
#define minE(a) *min_element(a, a+sizeof(a)/sizeof(a[0]))
#define F first
#define S second
#define siz(a) (int)a.size()
#define len(a) (int)a.length()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define bits(x) __builtin_popcount(x)
#define vvll vector<vector<ll>>
#define FOR(a, n) for (int a = 0; a < n; a++)
#define fin(s) {cout << s << "\n"; return;}
#define finm(s) {cout << s << "\n"; return 0;}
#define X real()
#define Y imag()
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {
    cout << vars << " = ";
    string delim = "";
    (..., (cout << delim << values, delim = ", "));
    cout << endl;
}
template<class T>
istream& operator >> (istream& is, complex<T>& p) {
  T value;
  is >> value; p.real(value);
  is >> value; p.imag(value);
  return is;
}
const int INF = 0x3f3f3f3f;
const ll LLINF = 0x3f3f3f3f3f3f3f3f;
const ll MOD = 1e9+7;
const double pie = 2*acos(0.0);
//------------------------------------------------------------
vector<int> v, lis;

int main(){
    cin.tie(0)->sync_with_stdio(0);
    //freopen("test.txt", "r", stdin);
    int n, m; cin >> n >> m;
    for (int i = 1; i <= n; i++){
        int a; cin >> a;
        if (a <= i*m) v.pb(a-i*m);
    }
    for (int i = 0; i < siz(v); i++){
        auto it = upper_bound(all(lis), -v[i]);
        if (it == lis.end()) lis.pb(-v[i]);
        else *it = -v[i];
    }
    cout << n-siz(lis) << "\n";
}

/* stuff you should look for
	* int overflow, array bounds
	* test case inputs don't carry over (DON'T RETURN EARLY)
	* special cases (n=1?)
	* do smth instead of nothing and stay organized
	* WRITE STUFF DOWN
	* DON'T GET STUCK ON ONE APPROACH
*/

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