Submission #638347

#TimeUsernameProblemLanguageResultExecution timeMemory
638347LeticiaFCSFinancial Report (JOI21_financial)C++17
0 / 100
4049 ms7848 KiB
#include "bits/stdc++.h"
#define st first
#define nd second
using lint = int64_t;
constexpr int MOD = int(1e9) + 7;
constexpr int INF = 0x3f3f3f3f;
constexpr int NINF = 0xcfcfcfcf;
constexpr lint LINF = 0x3f3f3f3f3f3f3f3f;
const long double PI = acosl(-1.0);
// Returns -1 if a < b, 0 if a = b and 1 if a > b.
int cmp_double(double a, double b = 0, double eps = 1e-9) {
	return a + eps > b ? b + eps > a ? 0 : 1 : -1;
}
using namespace std;


int main() {
	cin.tie(nullptr)->sync_with_stdio(false);
	int n, d;
	cin>>n>>d;
	vector<int> a(n+1);
	vector<int> dp(n+1, 0); 
	//dp[i] <-- max se i é o último e inc sub
	
	map<int,vector<int>> idOfVal;
	for(int i=1; i<=n; i++){
		cin>>a[i];
		idOfVal[a[i]].push_back(i);
	}
	for(auto &[x, ids]: idOfVal){
		reverse(ids.begin(), ids.end());
		for(int id: ids){
			//cerr<<"id "<<id<<"\n";
			dp[id] = 1;
			for(int j = max(1, id-d); j<id; j++){
				dp[id] = max(dp[id], 1 + dp[j]);
			}
			//cerr<<"dp["<<id<<"] = "<<dp[id]<<"\n";
		}
	}
	cout<<*max_element(dp.begin(), dp.end())<<"\n";
	

	return 0;
}
/*
[  ]Leu o problema certo???
[  ]Ver se precisa de long long
[  ]Viu o limite dos fors (é n? é m?)
[  ]Tamanho do vetor, será que é 2e5 em vez de 1e5??
[  ]Testar sample
[  ]Testar casos de  borda
[  ]1LL no 1LL << i
[  ]Testar mod (é 1e9+7, mesmo?, será que o mod não ficou negativo?)
*/
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