Submission #57954

#	Time	Username	Problem	Language	Result	Execution time	Memory
57954		Benq	Studentsko (COCI14_studentsko)	C++14	100 / 100	68 ms	2184 KiB

studentsko

#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;
 
typedef long long ll;
typedef long double ld;
typedef complex<ld> cd;

typedef pair<int, int> pi;
typedef pair<ll,ll> pl;
typedef pair<ld,ld> pd;

typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
typedef vector<cd> vcd;

template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;

#define FOR(i, a, b) for (int i=a; i<(b); i++)
#define F0R(i, a) for (int i=0; i<(a); i++)
#define FORd(i,a,b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i,a) for (int i = (a)-1; i >= 0; i--)

#define sz(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()

const int MOD = 1000000007;
const ll INF = 1e18;
const int MX = 100001;

map<int,int> a;
int n,k, mx[5000], ans;
vi A;

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n >> k; A.resize(n);
    F0R(i,n) {
        cin >> A[i];
        a[A[i]] = 0;
    }
    int co = 0;
    for (auto& x: a) {
        x.s = co/k;
        co ++;
    }
    F0R(i,n) A[i] = a[A[i]];
    // F0R(i,n) cout << A[i] << " ";
    F0R(i,n) {
        F0R(j,i) if (A[i] >= A[j]) mx[i] = max(mx[i],mx[j]);
        mx[i] ++;
        ans = max(ans,mx[i]);
    }
    cout << n-ans;
}

/* Look for:
* the exact constraints (multiple sets are too slow for n=10^6 :( ) 
* special cases (n=1?)
* overflow (ll vs int?)
* array bounds
*/

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10