oj.uz

Submission #693092

# Submission time Handle Problem Language Result Execution time Memory
693092 2023-02-02T11:21:49 Z whqkrtk04 Ancient Books (IOI17_books) C++17
50 / 100
 298 ms 106096 KB 
#include "books.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<int, pii> piii;
typedef pair<ll, ll> pll;
typedef pair<ll, pll> plll;
#define fi first
#define se second
const int INF = 1e9+1;
const int P = 1000000007;
const ll LLINF = (ll)1e18+1;
template <typename T1, typename T2>
ostream& operator<<(ostream& os, const pair<T1, T2>& p) { os << p.fi << " " << p.se; return os; }
template <typename T>
ostream& operator<<(ostream& os, const vector<T>& v) { for(auto i : v) os << i << " "; os << "\n"; return os; }

template <typename node_seg, typename node_query = node_seg, typename index_t = int>
class Segtree {
	private:
	const size_t n;
	std::vector<node_seg> seg;

	void init(const size_t i, const index_t s, const index_t e, const std::vector<node_seg> &A) {
		if(s+1 == e) seg[i] = A[s];
		else {
			init(i<<1, s, s+e>>1, A);
			init(i<<1|1, s+e>>1, e, A);
			seg[i] = seg[i<<1]+seg[i<<1|1];
		}
	}

	void update(const size_t i, const index_t s, const index_t e, const index_t j, const node_query &x) {
		if(j >= e || s > j) return;
		if(s+1 == e) seg[i] += x;
		else {
			update(i<<1, s, s+e>>1, j, x);
			update(i<<1|1, s+e>>1, e, j, x);
			seg[i] = seg[i<<1]+seg[i<<1|1];
		}
	}

	node_seg query(const size_t i, const index_t s, const index_t e, const index_t l, const index_t r) const {
		if(e <= l || r <= s) return node_seg::inf();
		if(l <= s && e <= r) return seg[i];
		return query(i<<1, s, s+e>>1, l, r)+query(i<<1|1, s+e>>1, e, l, r);
	}

	public:
	Segtree(const int n) : n(n) {
		seg.resize(4*n, node_seg::inf());
	}
	Segtree(const std::vector<node_seg> &A) : n(A.size()) {
		seg.resize(4*n, node_seg::inf());
		init(1, 0, n, A);
	}
	void update(const index_t j, const node_query &x) { update(1, 0, n, j, x); }
	node_seg query(const index_t l, const index_t r) const { return query(1, 0, n, l, r); }
};

struct Node_min {
	int x;
	static Node_min inf() { return {INF}; }
	Node_min operator+(const Node_min &y) { return {min(x, y.x)}; }
	void operator+=(const Node_min &y) { x = min(x, y.x); }
};

struct Node_max {
	int x;
	static Node_max inf() { return {-INF}; }
	Node_max operator+(const Node_max &y) { return {max(x, y.x)}; }
	void operator+=(const Node_max &y) { x = max(x, y.x); }
};

ll minimum_walk(vector<int> p, int s) {
	ll ans = 0LL;
	for(int i = 0; i < p.size(); i++) ans += abs(i-p[i]);
	int n = p.size();
	vector<vector<int>> A;
	vector<int> B(n);
	vector<bool> vis(n, false);
	for(int i = 0; i < n; i++) {
		if(vis[i]) continue;
		vector<int> T;
		int tmp = i;
		do {
			T.push_back(tmp);
			B[tmp] = A.size();
			vis[tmp] = true;
			tmp = p[tmp];
		} while(tmp != i);
		A.push_back(T);
	}
	vector<Node_min> min_nodes(n, Node_min::inf());
	vector<Node_max> max_nodes(n, Node_max::inf());
	for(int i = 0; i < A.size(); i++) {
		int l = *min_element(A[i].begin(), A[i].end());
		int r = *max_element(A[i].begin(), A[i].end());
		for(auto j : A[i]) {
			min_nodes[j].x = l;
			max_nodes[j].x = r+1;
		}
	}
	Segtree<Node_min> seg_min(min_nodes);
	Segtree<Node_max> seg_max(max_nodes);
	int l = s, r = s+1;
	int lc = 0, rc = 0;
	while(l > 0 && p[l-1] == l-1) l--, lc++;
	while(r < n && p[r] == r) r++, rc++;
	while(l > 0 || r < n) {
		int mi = seg_min.query(l, r).x;
		int ma = seg_max.query(l, r).x;
		if(mi == l && ma == r) {
			if(l && (r == n || lc < rc)) {
				ans += (lc+1)*2;
				l--;
				lc = 0;
			} else {
				ans += (rc+1)*2;
				r++;
				rc = 0;
			}
		} else {
			if(mi != l) lc = 0, l = mi;
			if(ma != r) rc = 0, r = ma;
		}
		while(l > 0 && p[l-1] == l-1) l--, lc++;
		while(r < n && p[r] == r) r++, rc++;
	}
	return ans;
}

Compilation message

books.cpp: In function 'll minimum_walk(std::vector<int>, int)':
books.cpp:78:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |  for(int i = 0; i < p.size(); i++) ans += abs(i-p[i]);
      |                 ~~^~~~~~~~~~
books.cpp:97:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   97 |  for(int i = 0; i < A.size(); i++) {
      |                 ~~^~~~~~~~~~
books.cpp: In instantiation of 'void Segtree<node_seg, node_query, index_t>::init(size_t, index_t, index_t, const std::vector<_Tp>&) [with node_seg = Node_min; node_query = Node_min; index_t = int; size_t = long unsigned int]':
books.cpp:56:3:   required from 'Segtree<node_seg, node_query, index_t>::Segtree(const std::vector<_Tp>&) [with node_seg = Node_min; node_query = Node_min; index_t = int]'
books.cpp:105:37:   required from here
books.cpp:28:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   28 |    init(i<<1, s, s+e>>1, A);
      |                  ~^~
books.cpp:29:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   29 |    init(i<<1|1, s+e>>1, e, A);
      |                 ~^~
books.cpp: In instantiation of 'void Segtree<node_seg, node_query, index_t>::init(size_t, index_t, index_t, const std::vector<_Tp>&) [with node_seg = Node_max; node_query = Node_max; index_t = int; size_t = long unsigned int]':
books.cpp:56:3:   required from 'Segtree<node_seg, node_query, index_t>::Segtree(const std::vector<_Tp>&) [with node_seg = Node_max; node_query = Node_max; index_t = int]'
books.cpp:106:37:   required from here
books.cpp:28:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   28 |    init(i<<1, s, s+e>>1, A);
      |                  ~^~
books.cpp:29:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   29 |    init(i<<1|1, s+e>>1, e, A);
      |                 ~^~
books.cpp: In instantiation of 'node_seg Segtree<node_seg, node_query, index_t>::query(size_t, index_t, index_t, index_t, index_t) const [with node_seg = Node_min; node_query = Node_min; index_t = int; size_t = long unsigned int]':
books.cpp:59:71:   required from 'node_seg Segtree<node_seg, node_query, index_t>::query(index_t, index_t) const [with node_seg = Node_min; node_query = Node_min; index_t = int]'
books.cpp:112:30:   required from here
books.cpp:47:26: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   47 |   return query(i<<1, s, s+e>>1, l, r)+query(i<<1|1, s+e>>1, e, l, r);
      |                         ~^~
books.cpp:47:54: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   47 |   return query(i<<1, s, s+e>>1, l, r)+query(i<<1|1, s+e>>1, e, l, r);
      |                                                     ~^~
books.cpp: In instantiation of 'node_seg Segtree<node_seg, node_query, index_t>::query(size_t, index_t, index_t, index_t, index_t) const [with node_seg = Node_max; node_query = Node_max; index_t = int; size_t = long unsigned int]':
books.cpp:59:71:   required from 'node_seg Segtree<node_seg, node_query, index_t>::query(index_t, index_t) const [with node_seg = Node_max; node_query = Node_max; index_t = int]'
books.cpp:113:30:   required from here
books.cpp:47:26: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   47 |   return query(i<<1, s, s+e>>1, l, r)+query(i<<1|1, s+e>>1, e, l, r);
      |                         ~^~
books.cpp:47:54: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   47 |   return query(i<<1, s, s+e>>1, l, r)+query(i<<1|1, s+e>>1, e, l, r);
      |                                                     ~^~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 225 ms 55228 KB Output is correct
31 Correct 187 ms 56060 KB Output is correct
32 Correct 206 ms 106096 KB Output is correct
33 Correct 298 ms 89208 KB Output is correct
34 Correct 279 ms 89196 KB Output is correct
35 Correct 286 ms 81648 KB Output is correct
36 Correct 209 ms 66712 KB Output is correct
37 Correct 136 ms 56480 KB Output is correct
38 Correct 131 ms 55404 KB Output is correct
39 Correct 128 ms 55416 KB Output is correct
40 Correct 131 ms 55432 KB Output is correct
41 Correct 147 ms 55564 KB Output is correct
42 Correct 165 ms 55572 KB Output is correct
43 Correct 205 ms 91896 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3324'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 225 ms 55228 KB Output is correct
31 Correct 187 ms 56060 KB Output is correct
32 Correct 206 ms 106096 KB Output is correct
33 Correct 298 ms 89208 KB Output is correct
34 Correct 279 ms 89196 KB Output is correct
35 Correct 286 ms 81648 KB Output is correct
36 Correct 209 ms 66712 KB Output is correct
37 Correct 136 ms 56480 KB Output is correct
38 Correct 131 ms 55404 KB Output is correct
39 Correct 128 ms 55416 KB Output is correct
40 Correct 131 ms 55432 KB Output is correct
41 Correct 147 ms 55564 KB Output is correct
42 Correct 165 ms 55572 KB Output is correct
43 Correct 205 ms 91896 KB Output is correct
44 Incorrect 1 ms 340 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3324'
45 Halted 0 ms 0 KB -