oj.uz

답안 #639330

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
639330 2022-09-09T13:14:35 Z LeticiaFCS K개의 묶음 (IZhO14_blocks) C++17
0 / 100
 1 ms 340 KB 
#include "bits/stdc++.h"
#define st first
#define nd second
using lint = long long;
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;

//21+18+14 pts


lint dp[102][100002];
lint a[100002];

int n, k; 
void init(){
	for(int qtd = 0; qtd <= k; qtd++)
		for(int i=0; i<=n; i++)
			dp[qtd][i] = LINF;
	dp[0][0] = 0;
}

lint naive_max(int i, int j){
	lint val = a[i];
	for(int k=i; k<= j; k++)
		val = max(val, a[k]);
	return val;
}


void print(int qtd, int i){
	cout<<"dp["<<qtd<<"]["<<i<<"] = "<<dp[qtd][i]<<"\n";
}
int main() {
	cin.tie(nullptr)->sync_with_stdio(false);
	
	cin>>n>>k;
	init();
	
	for(int i=1; i<= n; i++)
		cin>>a[i];
	
	
	for(int qtd=1; qtd <=k; qtd++){
		for(int i=1; i <= n; i++){	
			for(int j = 0; j<i; j++){
				dp[qtd][i] = min(dp[qtd][i], dp[qtd-1][j] + naive_max(j, i));
				//print(qtd, i);
			}	
		}
	}
	cout<<dp[k][n]<<"\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?)
*/

Subtask #1
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Incorrect 0 ms 340 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Incorrect 0 ms 340 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Incorrect 0 ms 340 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 47.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Incorrect 0 ms 340 KB Output isn't correct
6 Halted 0 ms 0 KB -