oj.uz

Submission #935149

# Submission time Handle Problem Language Result Execution time Memory
935149 2024-02-28T17:58:54 Z Lobo Ancient Books (IOI17_books) C++17
50 / 100
 214 ms 105972 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[nxr[r]]),dsr[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--;

	nxr[R] = R;
	costr[R] = 0;
	for(int i = R-1; i >= s; i--) {
		if(find(i) == find(i+1)) {
			nxr[i] = nxr[i+1];
			costr[i] = costr[i+1];
		}
		else if(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 16 ms 57944 KB Output is correct
2 Correct 12 ms 58016 KB Output is correct
3 Correct 12 ms 57948 KB Output is correct
4 Correct 13 ms 58064 KB Output is correct
5 Correct 13 ms 57992 KB Output is correct
6 Correct 13 ms 57948 KB Output is correct
7 Correct 13 ms 57948 KB Output is correct
8 Correct 15 ms 57948 KB Output is correct
9 Correct 13 ms 57944 KB Output is correct
10 Correct 13 ms 57944 KB Output is correct
11 Correct 12 ms 58068 KB Output is correct
12 Correct 14 ms 58064 KB Output is correct
13 Correct 12 ms 57944 KB Output is correct
14 Correct 12 ms 57948 KB Output is correct
15 Correct 13 ms 57940 KB Output is correct
16 Correct 14 ms 58060 KB Output is correct
17 Correct 13 ms 58060 KB Output is correct
18 Correct 13 ms 57944 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 57944 KB Output is correct
2 Correct 12 ms 58016 KB Output is correct
3 Correct 12 ms 57948 KB Output is correct
4 Correct 13 ms 58064 KB Output is correct
5 Correct 13 ms 57992 KB Output is correct
6 Correct 13 ms 57948 KB Output is correct
7 Correct 13 ms 57948 KB Output is correct
8 Correct 15 ms 57948 KB Output is correct
9 Correct 13 ms 57944 KB Output is correct
10 Correct 13 ms 57944 KB Output is correct
11 Correct 12 ms 58068 KB Output is correct
12 Correct 14 ms 58064 KB Output is correct
13 Correct 12 ms 57944 KB Output is correct
14 Correct 12 ms 57948 KB Output is correct
15 Correct 13 ms 57940 KB Output is correct
16 Correct 14 ms 58060 KB Output is correct
17 Correct 13 ms 58060 KB Output is correct
18 Correct 13 ms 57944 KB Output is correct
19 Correct 12 ms 57948 KB Output is correct
20 Correct 12 ms 58056 KB Output is correct
21 Correct 12 ms 57948 KB Output is correct
22 Correct 13 ms 57948 KB Output is correct
23 Correct 13 ms 57948 KB Output is correct
24 Correct 12 ms 57948 KB Output is correct
25 Correct 13 ms 58080 KB Output is correct
26 Correct 13 ms 57948 KB Output is correct
27 Correct 13 ms 57948 KB Output is correct
28 Correct 13 ms 57988 KB Output is correct
29 Correct 15 ms 57944 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 57944 KB Output is correct
2 Correct 12 ms 58016 KB Output is correct
3 Correct 12 ms 57948 KB Output is correct
4 Correct 13 ms 58064 KB Output is correct
5 Correct 13 ms 57992 KB Output is correct
6 Correct 13 ms 57948 KB Output is correct
7 Correct 13 ms 57948 KB Output is correct
8 Correct 15 ms 57948 KB Output is correct
9 Correct 13 ms 57944 KB Output is correct
10 Correct 13 ms 57944 KB Output is correct
11 Correct 12 ms 58068 KB Output is correct
12 Correct 14 ms 58064 KB Output is correct
13 Correct 12 ms 57944 KB Output is correct
14 Correct 12 ms 57948 KB Output is correct
15 Correct 13 ms 57940 KB Output is correct
16 Correct 14 ms 58060 KB Output is correct
17 Correct 13 ms 58060 KB Output is correct
18 Correct 13 ms 57944 KB Output is correct
19 Correct 12 ms 57948 KB Output is correct
20 Correct 12 ms 58056 KB Output is correct
21 Correct 12 ms 57948 KB Output is correct
22 Correct 13 ms 57948 KB Output is correct
23 Correct 13 ms 57948 KB Output is correct
24 Correct 12 ms 57948 KB Output is correct
25 Correct 13 ms 58080 KB Output is correct
26 Correct 13 ms 57948 KB Output is correct
27 Correct 13 ms 57948 KB Output is correct
28 Correct 13 ms 57988 KB Output is correct
29 Correct 15 ms 57944 KB Output is correct
30 Correct 214 ms 105972 KB Output is correct
31 Correct 201 ms 105552 KB Output is correct
32 Correct 113 ms 93264 KB Output is correct
33 Correct 118 ms 105724 KB Output is correct
34 Correct 116 ms 105720 KB Output is correct
35 Correct 122 ms 105556 KB Output is correct
36 Correct 124 ms 105808 KB Output is correct
37 Correct 131 ms 105696 KB Output is correct
38 Correct 145 ms 105556 KB Output is correct
39 Correct 132 ms 105752 KB Output is correct
40 Correct 144 ms 105720 KB Output is correct
41 Correct 162 ms 105736 KB Output is correct
42 Correct 173 ms 105720 KB Output is correct
43 Correct 126 ms 105812 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 57944 KB Output is correct
2 Correct 12 ms 57948 KB Output is correct
3 Correct 13 ms 57948 KB Output is correct
4 Correct 13 ms 57944 KB Output is correct
5 Correct 13 ms 57944 KB Output is correct
6 Incorrect 12 ms 57948 KB 3rd lines differ - on the 1st token, expected: '22140', found: '22144'
7 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 57944 KB Output is correct
2 Correct 12 ms 58016 KB Output is correct
3 Correct 12 ms 57948 KB Output is correct
4 Correct 13 ms 58064 KB Output is correct
5 Correct 13 ms 57992 KB Output is correct
6 Correct 13 ms 57948 KB Output is correct
7 Correct 13 ms 57948 KB Output is correct
8 Correct 15 ms 57948 KB Output is correct
9 Correct 13 ms 57944 KB Output is correct
10 Correct 13 ms 57944 KB Output is correct
11 Correct 12 ms 58068 KB Output is correct
12 Correct 14 ms 58064 KB Output is correct
13 Correct 12 ms 57944 KB Output is correct
14 Correct 12 ms 57948 KB Output is correct
15 Correct 13 ms 57940 KB Output is correct
16 Correct 14 ms 58060 KB Output is correct
17 Correct 13 ms 58060 KB Output is correct
18 Correct 13 ms 57944 KB Output is correct
19 Correct 12 ms 57948 KB Output is correct
20 Correct 12 ms 58056 KB Output is correct
21 Correct 12 ms 57948 KB Output is correct
22 Correct 13 ms 57948 KB Output is correct
23 Correct 13 ms 57948 KB Output is correct
24 Correct 12 ms 57948 KB Output is correct
25 Correct 13 ms 58080 KB Output is correct
26 Correct 13 ms 57948 KB Output is correct
27 Correct 13 ms 57948 KB Output is correct
28 Correct 13 ms 57988 KB Output is correct
29 Correct 15 ms 57944 KB Output is correct
30 Correct 214 ms 105972 KB Output is correct
31 Correct 201 ms 105552 KB Output is correct
32 Correct 113 ms 93264 KB Output is correct
33 Correct 118 ms 105724 KB Output is correct
34 Correct 116 ms 105720 KB Output is correct
35 Correct 122 ms 105556 KB Output is correct
36 Correct 124 ms 105808 KB Output is correct
37 Correct 131 ms 105696 KB Output is correct
38 Correct 145 ms 105556 KB Output is correct
39 Correct 132 ms 105752 KB Output is correct
40 Correct 144 ms 105720 KB Output is correct
41 Correct 162 ms 105736 KB Output is correct
42 Correct 173 ms 105720 KB Output is correct
43 Correct 126 ms 105812 KB Output is correct
44 Correct 12 ms 57944 KB Output is correct
45 Correct 12 ms 57948 KB Output is correct
46 Correct 13 ms 57948 KB Output is correct
47 Correct 13 ms 57944 KB Output is correct
48 Correct 13 ms 57944 KB Output is correct
49 Incorrect 12 ms 57948 KB 3rd lines differ - on the 1st token, expected: '22140', found: '22144'
50 Halted 0 ms 0 KB -