oj.uz

Submission #934636

# Submission time Handle Problem Language Result Execution time Memory
934636 2024-02-27T18:19:30 Z Lobo Ancient Books (IOI17_books) C++17
12 / 100
 17 ms 54364 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 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+sol(min(l,dsl[r+1]),dsr[r+1]));
	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 = 0;
	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;
	}

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

	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 17 ms 53852 KB Output is correct
2 Correct 11 ms 53852 KB Output is correct
3 Correct 14 ms 53956 KB Output is correct
4 Correct 11 ms 53852 KB Output is correct
5 Correct 11 ms 53852 KB Output is correct
6 Correct 13 ms 54364 KB Output is correct
7 Correct 11 ms 53852 KB Output is correct
8 Correct 12 ms 53852 KB Output is correct
9 Correct 11 ms 53848 KB Output is correct
10 Correct 11 ms 53852 KB Output is correct
11 Correct 12 ms 53960 KB Output is correct
12 Correct 12 ms 53848 KB Output is correct
13 Correct 11 ms 53852 KB Output is correct
14 Correct 12 ms 53932 KB Output is correct
15 Correct 12 ms 53976 KB Output is correct
16 Correct 11 ms 53852 KB Output is correct
17 Correct 11 ms 53852 KB Output is correct
18 Correct 11 ms 53848 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 53852 KB Output is correct
2 Correct 11 ms 53852 KB Output is correct
3 Correct 14 ms 53956 KB Output is correct
4 Correct 11 ms 53852 KB Output is correct
5 Correct 11 ms 53852 KB Output is correct
6 Correct 13 ms 54364 KB Output is correct
7 Correct 11 ms 53852 KB Output is correct
8 Correct 12 ms 53852 KB Output is correct
9 Correct 11 ms 53848 KB Output is correct
10 Correct 11 ms 53852 KB Output is correct
11 Correct 12 ms 53960 KB Output is correct
12 Correct 12 ms 53848 KB Output is correct
13 Correct 11 ms 53852 KB Output is correct
14 Correct 12 ms 53932 KB Output is correct
15 Correct 12 ms 53976 KB Output is correct
16 Correct 11 ms 53852 KB Output is correct
17 Correct 11 ms 53852 KB Output is correct
18 Correct 11 ms 53848 KB Output is correct
19 Correct 11 ms 53852 KB Output is correct
20 Correct 11 ms 53980 KB Output is correct
21 Correct 13 ms 53852 KB Output is correct
22 Incorrect 13 ms 53892 KB 3rd lines differ - on the 1st token, expected: '2082', found: '2092'
23 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 53852 KB Output is correct
2 Correct 11 ms 53852 KB Output is correct
3 Correct 14 ms 53956 KB Output is correct
4 Correct 11 ms 53852 KB Output is correct
5 Correct 11 ms 53852 KB Output is correct
6 Correct 13 ms 54364 KB Output is correct
7 Correct 11 ms 53852 KB Output is correct
8 Correct 12 ms 53852 KB Output is correct
9 Correct 11 ms 53848 KB Output is correct
10 Correct 11 ms 53852 KB Output is correct
11 Correct 12 ms 53960 KB Output is correct
12 Correct 12 ms 53848 KB Output is correct
13 Correct 11 ms 53852 KB Output is correct
14 Correct 12 ms 53932 KB Output is correct
15 Correct 12 ms 53976 KB Output is correct
16 Correct 11 ms 53852 KB Output is correct
17 Correct 11 ms 53852 KB Output is correct
18 Correct 11 ms 53848 KB Output is correct
19 Correct 11 ms 53852 KB Output is correct
20 Correct 11 ms 53980 KB Output is correct
21 Correct 13 ms 53852 KB Output is correct
22 Incorrect 13 ms 53892 KB 3rd lines differ - on the 1st token, expected: '2082', found: '2092'
23 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 53852 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2744'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 53852 KB Output is correct
2 Correct 11 ms 53852 KB Output is correct
3 Correct 14 ms 53956 KB Output is correct
4 Correct 11 ms 53852 KB Output is correct
5 Correct 11 ms 53852 KB Output is correct
6 Correct 13 ms 54364 KB Output is correct
7 Correct 11 ms 53852 KB Output is correct
8 Correct 12 ms 53852 KB Output is correct
9 Correct 11 ms 53848 KB Output is correct
10 Correct 11 ms 53852 KB Output is correct
11 Correct 12 ms 53960 KB Output is correct
12 Correct 12 ms 53848 KB Output is correct
13 Correct 11 ms 53852 KB Output is correct
14 Correct 12 ms 53932 KB Output is correct
15 Correct 12 ms 53976 KB Output is correct
16 Correct 11 ms 53852 KB Output is correct
17 Correct 11 ms 53852 KB Output is correct
18 Correct 11 ms 53848 KB Output is correct
19 Correct 11 ms 53852 KB Output is correct
20 Correct 11 ms 53980 KB Output is correct
21 Correct 13 ms 53852 KB Output is correct
22 Incorrect 13 ms 53892 KB 3rd lines differ - on the 1st token, expected: '2082', found: '2092'
23 Halted 0 ms 0 KB -