oj.uz

Submission #935143

# Submission time Handle Problem Language Result Execution time Memory
935143 2024-02-28T17:48:10 Z Lobo Ancient Books (IOI17_books) C++17
70 / 100
 2000 ms 348392 KB 
#include "books.h"
#include<bits/stdc++.h>
using namespace std;
const long long inf = (long long) 1e18 + 10;
const int inf1 = (int) 1e9 + 10;
#define int long long
#define dbl long double
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()
const int maxn = 1e6+10;

int n;
int ds[maxn], dsz[maxn], dsl[maxn], dsr[maxn];
int nxr[maxn], costr[maxn];

int find(int v) {
	if(v == ds[v]) return v;
	return ds[v] = find(ds[v]);
}

void join(int u, int v) {
	u = find(u);
	v = find(v);
	if(u == v) return;

	if(dsz[u] < dsz[v]) swap(u,v);
	dsz[u]+= dsz[v];
	dsl[u] = min(dsl[u],dsl[v]);
	dsr[u] = max(dsr[u],dsr[v]);
	ds[v] = u;
}

int L,R;
map<int,int> dp[maxn];
int sol(int l, int r) {
	if(dp[l].count(r)) return dp[l][r];
	if(l == L && r == R) return dp[l][r] = 0;

	dp[l][r] = inf;
	if(l > L) dp[l][r] = min(dp[l][r],2+sol(dsl[find(l-1)],max(r,dsr[find(l-1)])));
	if(r < R) dp[l][r] = min(dp[l][r],2*costr[r]+sol(min(l,dsl[find(nxr[r])]),dsr[find(nxr[r])]));
	return dp[l][r];
}

long long minimum_walk(vector<int32_t> p, int32_t s) {
	// return 0;

	n = p.size();

	for(int i = 0; i < n; i++) {
		ds[i] = i;
		dsz[i] = 1;
		dsl[i] = i;
		dsr[i] = i;
	}

	for(int i = 0; i < n; i++) {
		join(i,p[i]);
	}

	int itl = s;
	while(itl != n) {
		int itr = itl;
		int cur = itl;
		while(cur <= itr) {
			itr = max(itr,dsr[find(cur)]);
			cur++;
		}
		for(int i = itl; i < itr; i++) {
			join(i,i+1);
		}
		itl = itr+1;
	}

	int itr = s;
	while(itr >= 0) {
		int itl = itr;
		int cur = itr;
		while(cur >= itl) {
			itl = min(itl,dsl[find(cur)]);
			cur--;
		}
		for(int i = itl; i < itr; i++) {
			join(i,i+1);
		}
		itr = itl-1;
	}

	L = 0;
	R = n-1;
	while(L < s && dsz[find(L)] == 1) L++;
	while(R > s && dsz[find(R)] == 1) R--;

	for(int i = R-1; i >= s; i--) {
		if(true or dsl[find(i+1)] < s or dsr[find(i+1)] == R) {
			nxr[i] = i+1;
			costr[i] = 1;
		}
		else {
			nxr[i] = nxr[i+1];
			costr[i] = costr[i+1]+1;
		}
	}

	int ans = 0;
	for(int i = 0; i < n; i++) ans+= abs(p[i]-i);

	return ans+sol(dsl[find(s)],dsr[find(s)]);
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 57944 KB Output is correct
2 Correct 13 ms 57944 KB Output is correct
3 Correct 13 ms 57944 KB Output is correct
4 Correct 12 ms 58128 KB Output is correct
5 Correct 13 ms 58312 KB Output is correct
6 Correct 12 ms 57944 KB Output is correct
7 Correct 12 ms 58028 KB Output is correct
8 Correct 12 ms 57944 KB Output is correct
9 Correct 12 ms 55900 KB Output is correct
10 Correct 13 ms 57948 KB Output is correct
11 Correct 13 ms 55900 KB Output is correct
12 Correct 13 ms 58028 KB Output is correct
13 Correct 13 ms 57948 KB Output is correct
14 Correct 12 ms 55896 KB Output is correct
15 Correct 12 ms 57948 KB Output is correct
16 Correct 12 ms 57948 KB Output is correct
17 Correct 14 ms 57948 KB Output is correct
18 Correct 12 ms 57948 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 57944 KB Output is correct
2 Correct 13 ms 57944 KB Output is correct
3 Correct 13 ms 57944 KB Output is correct
4 Correct 12 ms 58128 KB Output is correct
5 Correct 13 ms 58312 KB Output is correct
6 Correct 12 ms 57944 KB Output is correct
7 Correct 12 ms 58028 KB Output is correct
8 Correct 12 ms 57944 KB Output is correct
9 Correct 12 ms 55900 KB Output is correct
10 Correct 13 ms 57948 KB Output is correct
11 Correct 13 ms 55900 KB Output is correct
12 Correct 13 ms 58028 KB Output is correct
13 Correct 13 ms 57948 KB Output is correct
14 Correct 12 ms 55896 KB Output is correct
15 Correct 12 ms 57948 KB Output is correct
16 Correct 12 ms 57948 KB Output is correct
17 Correct 14 ms 57948 KB Output is correct
18 Correct 12 ms 57948 KB Output is correct
19 Correct 13 ms 57948 KB Output is correct
20 Correct 13 ms 58068 KB Output is correct
21 Correct 12 ms 55896 KB Output is correct
22 Correct 13 ms 57948 KB Output is correct
23 Correct 13 ms 58016 KB Output is correct
24 Correct 15 ms 58512 KB Output is correct
25 Correct 14 ms 57948 KB Output is correct
26 Correct 15 ms 58060 KB Output is correct
27 Correct 13 ms 57948 KB Output is correct
28 Correct 13 ms 58076 KB Output is correct
29 Correct 13 ms 57948 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 57944 KB Output is correct
2 Correct 13 ms 57944 KB Output is correct
3 Correct 13 ms 57944 KB Output is correct
4 Correct 12 ms 58128 KB Output is correct
5 Correct 13 ms 58312 KB Output is correct
6 Correct 12 ms 57944 KB Output is correct
7 Correct 12 ms 58028 KB Output is correct
8 Correct 12 ms 57944 KB Output is correct
9 Correct 12 ms 55900 KB Output is correct
10 Correct 13 ms 57948 KB Output is correct
11 Correct 13 ms 55900 KB Output is correct
12 Correct 13 ms 58028 KB Output is correct
13 Correct 13 ms 57948 KB Output is correct
14 Correct 12 ms 55896 KB Output is correct
15 Correct 12 ms 57948 KB Output is correct
16 Correct 12 ms 57948 KB Output is correct
17 Correct 14 ms 57948 KB Output is correct
18 Correct 12 ms 57948 KB Output is correct
19 Correct 13 ms 57948 KB Output is correct
20 Correct 13 ms 58068 KB Output is correct
21 Correct 12 ms 55896 KB Output is correct
22 Correct 13 ms 57948 KB Output is correct
23 Correct 13 ms 58016 KB Output is correct
24 Correct 15 ms 58512 KB Output is correct
25 Correct 14 ms 57948 KB Output is correct
26 Correct 15 ms 58060 KB Output is correct
27 Correct 13 ms 57948 KB Output is correct
28 Correct 13 ms 58076 KB Output is correct
29 Correct 13 ms 57948 KB Output is correct
30 Correct 187 ms 102160 KB Output is correct
31 Correct 190 ms 102360 KB Output is correct
32 Correct 94 ms 87820 KB Output is correct
33 Correct 526 ms 202396 KB Output is correct
34 Correct 564 ms 202248 KB Output is correct
35 Correct 422 ms 173472 KB Output is correct
36 Correct 193 ms 122876 KB Output is correct
37 Correct 124 ms 103160 KB Output is correct
38 Correct 121 ms 102156 KB Output is correct
39 Correct 139 ms 102224 KB Output is correct
40 Correct 130 ms 102160 KB Output is correct
41 Correct 140 ms 102136 KB Output is correct
42 Correct 131 ms 102156 KB Output is correct
43 Correct 113 ms 102156 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 64788 KB Output is correct
2 Correct 13 ms 57948 KB Output is correct
3 Correct 21 ms 60428 KB Output is correct
4 Correct 36 ms 64080 KB Output is correct
5 Correct 38 ms 64352 KB Output is correct
6 Correct 12 ms 57948 KB Output is correct
7 Correct 11 ms 57948 KB Output is correct
8 Correct 13 ms 57948 KB Output is correct
9 Correct 12 ms 57948 KB Output is correct
10 Correct 13 ms 55960 KB Output is correct
11 Correct 14 ms 58460 KB Output is correct
12 Correct 18 ms 58548 KB Output is correct
13 Correct 16 ms 57948 KB Output is correct
14 Correct 13 ms 57948 KB Output is correct
15 Correct 12 ms 57948 KB Output is correct
16 Correct 12 ms 57948 KB Output is correct
17 Correct 12 ms 58208 KB Output is correct
18 Correct 13 ms 57948 KB Output is correct
19 Correct 12 ms 57948 KB Output is correct
20 Correct 15 ms 57948 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 57944 KB Output is correct
2 Correct 13 ms 57944 KB Output is correct
3 Correct 13 ms 57944 KB Output is correct
4 Correct 12 ms 58128 KB Output is correct
5 Correct 13 ms 58312 KB Output is correct
6 Correct 12 ms 57944 KB Output is correct
7 Correct 12 ms 58028 KB Output is correct
8 Correct 12 ms 57944 KB Output is correct
9 Correct 12 ms 55900 KB Output is correct
10 Correct 13 ms 57948 KB Output is correct
11 Correct 13 ms 55900 KB Output is correct
12 Correct 13 ms 58028 KB Output is correct
13 Correct 13 ms 57948 KB Output is correct
14 Correct 12 ms 55896 KB Output is correct
15 Correct 12 ms 57948 KB Output is correct
16 Correct 12 ms 57948 KB Output is correct
17 Correct 14 ms 57948 KB Output is correct
18 Correct 12 ms 57948 KB Output is correct
19 Correct 13 ms 57948 KB Output is correct
20 Correct 13 ms 58068 KB Output is correct
21 Correct 12 ms 55896 KB Output is correct
22 Correct 13 ms 57948 KB Output is correct
23 Correct 13 ms 58016 KB Output is correct
24 Correct 15 ms 58512 KB Output is correct
25 Correct 14 ms 57948 KB Output is correct
26 Correct 15 ms 58060 KB Output is correct
27 Correct 13 ms 57948 KB Output is correct
28 Correct 13 ms 58076 KB Output is correct
29 Correct 13 ms 57948 KB Output is correct
30 Correct 187 ms 102160 KB Output is correct
31 Correct 190 ms 102360 KB Output is correct
32 Correct 94 ms 87820 KB Output is correct
33 Correct 526 ms 202396 KB Output is correct
34 Correct 564 ms 202248 KB Output is correct
35 Correct 422 ms 173472 KB Output is correct
36 Correct 193 ms 122876 KB Output is correct
37 Correct 124 ms 103160 KB Output is correct
38 Correct 121 ms 102156 KB Output is correct
39 Correct 139 ms 102224 KB Output is correct
40 Correct 130 ms 102160 KB Output is correct
41 Correct 140 ms 102136 KB Output is correct
42 Correct 131 ms 102156 KB Output is correct
43 Correct 113 ms 102156 KB Output is correct
44 Correct 46 ms 64788 KB Output is correct
45 Correct 13 ms 57948 KB Output is correct
46 Correct 21 ms 60428 KB Output is correct
47 Correct 36 ms 64080 KB Output is correct
48 Correct 38 ms 64352 KB Output is correct
49 Correct 12 ms 57948 KB Output is correct
50 Correct 11 ms 57948 KB Output is correct
51 Correct 13 ms 57948 KB Output is correct
52 Correct 12 ms 57948 KB Output is correct
53 Correct 13 ms 55960 KB Output is correct
54 Correct 14 ms 58460 KB Output is correct
55 Correct 18 ms 58548 KB Output is correct
56 Correct 16 ms 57948 KB Output is correct
57 Correct 13 ms 57948 KB Output is correct
58 Correct 12 ms 57948 KB Output is correct
59 Correct 12 ms 57948 KB Output is correct
60 Correct 12 ms 58208 KB Output is correct
61 Correct 13 ms 57948 KB Output is correct
62 Correct 12 ms 57948 KB Output is correct
63 Correct 15 ms 57948 KB Output is correct
64 Correct 420 ms 135020 KB Output is correct
65 Execution timed out 2044 ms 348392 KB Time limit exceeded
66 Halted 0 ms 0 KB -