oj.uz

답안 #965539

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
965539 2024-04-18T20:11:11 Z Alkaser_ID Copy and Paste 3 (JOI22_copypaste3) C++17
20 / 100
 3000 ms 1272 KB 
#include <iostream>
#include <algorithm>
#include <vector>
#include <map>
#include <set>
using namespace std;
typedef long long ll;
const ll mod = 1e9 + 7;
#define ml(x,y) ((x*y)%mod)
ll b1 = 53, p1[3003];
ll inv[3003];

ll a, b, c;
ll hsh[3003];
map<ll, ll> dp;
inline ll fsp(ll x, ll b) {
	if (b == 0) return 1;
	if (b == 1) return x;
	ll g = ml(x, x);
	g = fsp(g, b / 2);
	if (b % 2 == 0) return g;
	return (g * x) % mod;
}
inline ll small(ll l,ll r) {
	ll sz = r - l + 1;
	if (sz == 1) return a;
	if (sz == 2) {
		ll fr = (hsh[l] - (l == 0 ? 0 : hsh[l - 1])) % mod; 
		ll sc = (hsh[l + 1] - hsh[l] + mod) % mod;
		sc = (sc * inv[1]) % mod;
		if (fr == sc) return min(2 * a, a + b + 2 * c);
		return 2 * a;
	}
	ll fr = (hsh[l] - (l == 0 ? 0 : hsh[l - 1])) % mod;
	ll sc = (hsh[l + 1] - hsh[l] + mod) % mod;
	ll th = (hsh[l + 2] - hsh[l + 1] + mod) % mod;
	sc = (sc * inv[1]) % mod;
	th = (th * inv[2]) % mod;
	if (sc != fr && fr != th && sc != th) return 3 * a;
	if (sc == fr && fr == th) return min(3 * a, a + b + 3 * c);
	return min(3 * a, 2 * a + b + 2 * c);
}
inline ll getmin(ll l, ll r) {
	ll th = hsh[r] - (l == 0 ? 0 : hsh[l - 1]);
	th = (th * inv[l]) % mod;
	if (dp.find(th) != dp.end()) return dp[th];
	if (r - l + 1 <= 3) return small(l, r);
	ll dc = 0, tot = (r - l + 1) * a;
	for (ll ln = 1; ln <= (r - l + 1) / 2; ++ln) {
		map<ll, ll> m, d; map<ll, pair<ll, ll>> st;
		for (ll i = l; i + ln <= r + 1; ++i) {
			ll j = i + ln - 1;
			ll hs = (hsh[j] - (i > 0 ? hsh[i - 1] : 0) + mod) % mod;
			hs = (hs * inv[i]) % mod;
			if (m.find(hs) != m.end()) {
				if (i < d[hs]) continue;
			}
			else st[hs] = { i,j };
			d[hs] = i + ln;
			++m[hs];
		}
		for (map<ll, ll>::iterator it = m.begin(); it != m.end(); ++it) {
			vector<ll> nh; pair<ll, ll> se = st[it->first];
			ll bg = se.first;
			for (ll j = se.first; j <= se.second; ++j) {
				ll hvl = (hsh[j] - (bg == 0 ? 0 : hsh[bg - 1]) + mod) % mod;
 				hvl = (hvl * inv[bg]) % mod;
				nh.push_back(hvl);
			}
			ll prp = getmin(se.first, se.second);
			ll tcost = it->second * ln * a - prp - it->second * c - b;
			if (tcost <= 0) continue;
			dc = max(dc, tcost);
		}
	}
	dp[th] = tot - dc;
	return tot - dc;
}
int main()
{
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	ll n; cin >> n;
	string s; cin >> s;
	cin >> a >> b >> c;
	p1[0] = 1;
	p1[1] = b1; 
	for (ll i = 2; i <= s.size() + 3; ++i) {
		p1[i] = (p1[i - 1] * b1) % mod;
	}
	inv[0] = 1;
	for (ll i = 1; i <= s.size() + 3; ++i) {
		inv[i] = fsp(p1[i], mod - 2);
	}
	ll lst = 0;
	for (ll i = 0; i < s.size(); ++i) {
		hsh[i] = ((s[i] - 95) * p1[i]) % mod;
		hsh[i] = (hsh[i] + lst) % mod;
		lst = hsh[i];
	}
	cout << getmin(0, n - 1);
}

Compilation message

copypaste3.cpp: In function 'int main()':
copypaste3.cpp:87:19: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   87 |  for (ll i = 2; i <= s.size() + 3; ++i) {
      |                 ~~^~~~~~~~~~~~~~~
copypaste3.cpp:91:19: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |  for (ll i = 1; i <= s.size() + 3; ++i) {
      |                 ~~^~~~~~~~~~~~~~~
copypaste3.cpp:95:19: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |  for (ll i = 0; i < s.size(); ++i) {
      |                 ~~^~~~~~~~~~

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 692 ms 344 KB Output is correct
4 Correct 842 ms 344 KB Output is correct
5 Correct 1070 ms 596 KB Output is correct
6 Correct 1322 ms 596 KB Output is correct
7 Correct 1684 ms 852 KB Output is correct
8 Correct 1693 ms 836 KB Output is correct
9 Correct 1692 ms 628 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 356 KB Output is correct
17 Correct 1 ms 348 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 600 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 2 ms 348 KB Output is correct
24 Correct 3 ms 348 KB Output is correct
25 Correct 3 ms 348 KB Output is correct
26 Correct 3 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 2 ms 348 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 2 ms 348 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 3 ms 480 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 600 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 2 ms 348 KB Output is correct
24 Correct 3 ms 348 KB Output is correct
25 Correct 3 ms 348 KB Output is correct
26 Correct 3 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 2 ms 348 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 2 ms 348 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 3 ms 480 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 163 ms 596 KB Output is correct
41 Correct 2 ms 348 KB Output is correct
42 Execution timed out 3051 ms 1272 KB Time limit exceeded
43 Halted 0 ms 0 KB -

Subtask #5
0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 600 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 2 ms 348 KB Output is correct
24 Correct 3 ms 348 KB Output is correct
25 Correct 3 ms 348 KB Output is correct
26 Correct 3 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 2 ms 348 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 2 ms 348 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 3 ms 480 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 163 ms 596 KB Output is correct
41 Correct 2 ms 348 KB Output is correct
42 Execution timed out 3051 ms 1272 KB Time limit exceeded
43 Halted 0 ms 0 KB -

Subtask #6
0 / 38.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 692 ms 344 KB Output is correct
14 Correct 842 ms 344 KB Output is correct
15 Correct 1070 ms 596 KB Output is correct
16 Correct 1322 ms 596 KB Output is correct
17 Correct 1684 ms 852 KB Output is correct
18 Correct 1693 ms 836 KB Output is correct
19 Correct 1692 ms 628 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 356 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 600 KB Output is correct
39 Correct 2 ms 348 KB Output is correct
40 Correct 2 ms 348 KB Output is correct
41 Correct 3 ms 348 KB Output is correct
42 Correct 3 ms 348 KB Output is correct
43 Correct 3 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 1 ms 348 KB Output is correct
46 Correct 2 ms 348 KB Output is correct
47 Correct 2 ms 348 KB Output is correct
48 Correct 2 ms 348 KB Output is correct
49 Correct 2 ms 348 KB Output is correct
50 Correct 3 ms 480 KB Output is correct
51 Correct 0 ms 344 KB Output is correct
52 Correct 1 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 163 ms 596 KB Output is correct
58 Correct 2 ms 348 KB Output is correct
59 Execution timed out 3051 ms 1272 KB Time limit exceeded
60 Halted 0 ms 0 KB -