oj.uz

Submission #782770

# Submission time Handle Problem Language Result Execution time Memory
782770 2023-07-14T09:09:46 Z MISM06 Liteh and Newfiteh (INOI20_litehfiteh) C++17
100 / 100
 295 ms 255848 KB 
//0 1 1 0 1
//0 1 0 0 1
//1 0 0 1 1
//0 1 1 0 1
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast,unroll-loops")
// #pragma GCC target("avx2")

using namespace std;

#define F 			first
#define S 			second
#define pb 			push_back
#define sze			size()
#define	all(x)		x.begin() , x.end()
#define wall__		cout << "--------------------------------------\n";
#define kids		int mid = (tl + tr) >> 1, cl = v << 1, cr = v << 1 | 1
#define file_io		freopen("input.cpp", "r", stdin); freopen("output.cpp", "w", stdout);

typedef long long ll;
typedef long double dl;
typedef pair < int , int > pii;
typedef pair < int , ll > pil;
typedef pair < ll , int > pli;
typedef pair < ll , ll > pll;
typedef pair < int , pii > piii;
typedef pair < ll, pll > plll;


const ll N = 1e5 + 10;
const ll mod = 1e9 + 7;
const ll inf = 2e16;
const ll INF = 1e9 + 10;
const ll lg = 18;

ll n, dp[N][lg][lg], pd[N], a[N];

void solve () {

	cin >> n;
	for (int i = 1; i <= n; i++) cin >> a[i];
	for (int i = n; i >= 1; --i) {
		for (int j = 0; j < lg; j++) dp[i][j][lg - 1] = INF;
		for (int k = lg - 2; k >= 0; --k) {
			int x = a[i] - k;
			if (x != 0) dp[i][0][k] = INF;
			else dp[i][0][k] = 0;
			for (int j = 1; j < lg; j++) {
				if (i + (1 << j) > n + 1) dp[i][j][k] = INF;
				else dp[i][j][k] = min(dp[i][j - 1][k], dp[i][j - 1][k + 1] + 1) + min(dp[i + (1 << (j - 1))][j - 1][k], dp[i + (1 << (j - 1))][j - 1][k + 1] + 1);
			}
		}
	}
	pd[n + 1] = 0;
	for (int i = n; i >= 1; --i) {
		if (a[i] == 0) pd[i] = pd[i + 1];
		else {
			pd[i] = INF;
			for (int j = 0; j < lg; j++) {
				if ((1 << j) + i > n + 1) continue;
				pd[i] = min(pd[i], dp[i][j][1] + 1 + pd[i + (1 << j)]);
			}
		}
	}
	if (pd[1] >= INF) cout << -1 << '\n';
	else cout << pd[1] << '\n';

}


int main() {
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	int t = 1;
	// cin >> t;
	while (t--) {solve();}
    return 0;
}
/*
*/
//shrek is love;

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1868 KB Output is correct
2 Correct 1 ms 1748 KB Output is correct
3 Correct 1 ms 1748 KB Output is correct
4 Correct 1 ms 1748 KB Output is correct
5 Correct 1 ms 1748 KB Output is correct
6 Correct 2 ms 1780 KB Output is correct
7 Correct 1 ms 1748 KB Output is correct
8 Correct 2 ms 1748 KB Output is correct
9 Correct 1 ms 1864 KB Output is correct
10 Correct 1 ms 1748 KB Output is correct
11 Correct 2 ms 1748 KB Output is correct
12 Correct 2 ms 1860 KB Output is correct
13 Correct 2 ms 1796 KB Output is correct

Subtask #2
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1868 KB Output is correct
2 Correct 1 ms 1748 KB Output is correct
3 Correct 1 ms 1748 KB Output is correct
4 Correct 1 ms 1748 KB Output is correct
5 Correct 1 ms 1748 KB Output is correct
6 Correct 2 ms 1780 KB Output is correct
7 Correct 1 ms 1748 KB Output is correct
8 Correct 2 ms 1748 KB Output is correct
9 Correct 1 ms 1864 KB Output is correct
10 Correct 1 ms 1748 KB Output is correct
11 Correct 2 ms 1748 KB Output is correct
12 Correct 2 ms 1860 KB Output is correct
13 Correct 2 ms 1796 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 3 ms 2772 KB Output is correct
19 Correct 3 ms 2772 KB Output is correct
20 Correct 17 ms 25820 KB Output is correct
21 Correct 17 ms 25812 KB Output is correct
22 Correct 295 ms 255728 KB Output is correct
23 Correct 213 ms 255848 KB Output is correct
24 Correct 231 ms 255636 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 588 KB Output is correct
27 Correct 1 ms 584 KB Output is correct
28 Correct 2 ms 2772 KB Output is correct
29 Correct 27 ms 25812 KB Output is correct
30 Correct 26 ms 25764 KB Output is correct
31 Correct 23 ms 25844 KB Output is correct
32 Correct 26 ms 25792 KB Output is correct
33 Correct 263 ms 255624 KB Output is correct
34 Correct 239 ms 255696 KB Output is correct
35 Correct 230 ms 255696 KB Output is correct
36 Correct 217 ms 255596 KB Output is correct
37 Correct 219 ms 255692 KB Output is correct
38 Correct 219 ms 255664 KB Output is correct
39 Correct 218 ms 255636 KB Output is correct
40 Correct 218 ms 255736 KB Output is correct
41 Correct 206 ms 255684 KB Output is correct
42 Correct 211 ms 255668 KB Output is correct
43 Correct 231 ms 255680 KB Output is correct
44 Correct 278 ms 255628 KB Output is correct
45 Correct 234 ms 255592 KB Output is correct
46 Correct 269 ms 255692 KB Output is correct
47 Correct 169 ms 170532 KB Output is correct
48 Correct 170 ms 198904 KB Output is correct
49 Correct 202 ms 227312 KB Output is correct
50 Correct 221 ms 255680 KB Output is correct
51 Correct 20 ms 25816 KB Output is correct
52 Correct 217 ms 255688 KB Output is correct