oj.uz

Submission #933791

# Submission time Handle Problem Language Result Execution time Memory
933791 2024-02-26T10:41:33 Z boris_mihov Copy and Paste 3 (JOI22_copypaste3) C++17
1 / 100
 676 ms 302356 KB 
#include <algorithm>
#include <iostream>
#include <numeric>
#include <cassert>
#include <vector>
#include <map>

typedef long long llong;
const int MAXN = 2500 + 10;
const int ALPHABET = 26;
const int MOD2 = 998244353;
const int MOD = 1e9 + 7;
const int INF  = 1e9;

int n;
char s[MAXN];
int letter[MAXN][ALPHABET];
int fail[MAXN];

llong a, b, c;
int next[MAXN][MAXN];
llong dp[MAXN][MAXN];
llong cnt[MAXN][MAXN];
llong best[MAXN][MAXN];
std::vector <int> increase[MAXN][MAXN];
llong prefixHash[MAXN];
llong prefixHash2[MAXN];
llong base[MAXN];
llong base2[MAXN];

llong getHash(int l, int r)
{
    llong res = prefixHash[r] + MOD - ((prefixHash[l - 1] * base[r - l + 1]) % MOD);
    if (res >= MOD) res -= MOD;
    return res;
}

llong getHash2(int l, int r)
{
    llong res = prefixHash2[r] + MOD2 - ((prefixHash2[l - 1] * base[r - l + 1]) % MOD2);
    if (res >= MOD2) res -= MOD2;
    return res;
}

void solve()
{
    base[0] = 1;
    base2[0] = 1;
    for (int i = 1 ; i <= n ; ++i)
    {
        base[i] = (base[i - 1] * 27) % MOD;
        base2[i] = (base2[i - 1] * 27) % MOD2;
    }

    for (int i = 1 ; i <= n ; ++i)
    {
        prefixHash[i] = prefixHash[i - 1] * 27;
        prefixHash[i] += s[i] - 'a' + 1;
        prefixHash[i] %= MOD;
    }

    for (int i = 1 ; i <= n ; ++i)
    {
        prefixHash2[i] = prefixHash2[i - 1] * 27;
        prefixHash2[i] += s[i] - 'a' + 1;
        prefixHash2[i] %= MOD2;
    }

    for (int len = 1 ; len <= n ; ++len)
    {
        std::map <std::pair <int,int> ,int> map;
        for (int pos = n - len + 1 ; pos >= 1 ; --pos)
        {
            int r = pos + len - 1;
            next[pos][r] = map[{getHash(pos, r), getHash2(pos, r)}];
            if (r + len - 1 <= n)
            {
                map[{getHash(r, r + len - 1), getHash2(r, r + len - 1)}] = r;
            }
        } 
    }

    for (int l = 1 ; l <= n ; ++l)
    {
        for (int r = l ; r <= n ; ++r)
        {
            int left = l;
            int len = r - l;
            do
            {
                increase[l][left + len].push_back(r);
                left = next[left][left + len];
            } while (left != 0);
        }
    }

    for (int len = 1 ; len <= n ; ++len)
    {
        for (int l = 1 ; l + len - 1 <= n ; ++l)
        {
            int r = l + len - 1;
            best[l][r] = best[l][r - 1];
            for (const int &idx : increase[l][r])
            {
                cnt[l][idx]++;
                if (cnt[l][idx] > 1)
                {
                    best[l][r] = std::max(best[l][r], cnt[l][idx] * (idx - l + 1) * a - b - c * cnt[l][idx] - dp[l][idx]);
                }
            }

            dp[l][r] = a * (r - l + 1) - best[l][r];
            if (len > 1)
            {
                dp[l][r] = std::min(dp[l][r], dp[l + 1][r] + a);
                dp[l][r] = std::min(dp[l][r], dp[l][r - 1] + a);
            }
        }
    }

    std::cout << dp[1][n] << '\n';
}

void input()
{
    std::cin >> n;
    std::cin >> s + 1;
    std::cin >> a >> b >> c;

    // for (int i = 1 ; i <= n ; ++i)
    // {
    //     if (i % 3 == 1) assert(s[i] == 'n');
    //     if (i % 3 == 2) assert(s[i] == 'q');
    //     if (i % 3 == 0) assert(s[i] == 'v');
    // }
}

void fastIOI()
{
    std::ios_base :: sync_with_stdio(0);
    std::cout.tie(nullptr);
    std::cin.tie(nullptr);
}

int main()
{
    fastIOI();
    input();
    solve();

    return 0;
}

Compilation message

copypaste3.cpp: In function 'void input()':
copypaste3.cpp:127:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  127 |     std::cin >> s + 1;
      |                 ~~^~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 154448 KB Output is correct
2 Correct 34 ms 154448 KB Output is correct
3 Correct 33 ms 154460 KB Output is correct
4 Correct 35 ms 154388 KB Output is correct
5 Correct 34 ms 154452 KB Output is correct
6 Correct 34 ms 154456 KB Output is correct
7 Correct 35 ms 154456 KB Output is correct
8 Correct 33 ms 154472 KB Output is correct
9 Correct 35 ms 154388 KB Output is correct
10 Correct 35 ms 154252 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 154460 KB Output is correct
2 Correct 36 ms 154452 KB Output is correct
3 Incorrect 676 ms 302356 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 154448 KB Output is correct
2 Correct 34 ms 154448 KB Output is correct
3 Correct 33 ms 154460 KB Output is correct
4 Correct 35 ms 154388 KB Output is correct
5 Correct 34 ms 154452 KB Output is correct
6 Correct 34 ms 154456 KB Output is correct
7 Correct 35 ms 154456 KB Output is correct
8 Correct 33 ms 154472 KB Output is correct
9 Correct 35 ms 154388 KB Output is correct
10 Correct 35 ms 154252 KB Output is correct
11 Correct 36 ms 154716 KB Output is correct
12 Correct 33 ms 154460 KB Output is correct
13 Correct 33 ms 154452 KB Output is correct
14 Correct 34 ms 154388 KB Output is correct
15 Correct 35 ms 154660 KB Output is correct
16 Correct 34 ms 154460 KB Output is correct
17 Correct 35 ms 154452 KB Output is correct
18 Correct 34 ms 154456 KB Output is correct
19 Correct 33 ms 154452 KB Output is correct
20 Correct 34 ms 154456 KB Output is correct
21 Correct 34 ms 154460 KB Output is correct
22 Correct 33 ms 154460 KB Output is correct
23 Correct 35 ms 154448 KB Output is correct
24 Correct 34 ms 154460 KB Output is correct
25 Correct 34 ms 154460 KB Output is correct
26 Correct 34 ms 154460 KB Output is correct
27 Correct 34 ms 154392 KB Output is correct
28 Correct 35 ms 154388 KB Output is correct
29 Correct 35 ms 154456 KB Output is correct
30 Correct 35 ms 154600 KB Output is correct
31 Correct 35 ms 154528 KB Output is correct
32 Incorrect 34 ms 154452 KB Output isn't correct
33 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 154448 KB Output is correct
2 Correct 34 ms 154448 KB Output is correct
3 Correct 33 ms 154460 KB Output is correct
4 Correct 35 ms 154388 KB Output is correct
5 Correct 34 ms 154452 KB Output is correct
6 Correct 34 ms 154456 KB Output is correct
7 Correct 35 ms 154456 KB Output is correct
8 Correct 33 ms 154472 KB Output is correct
9 Correct 35 ms 154388 KB Output is correct
10 Correct 35 ms 154252 KB Output is correct
11 Correct 36 ms 154716 KB Output is correct
12 Correct 33 ms 154460 KB Output is correct
13 Correct 33 ms 154452 KB Output is correct
14 Correct 34 ms 154388 KB Output is correct
15 Correct 35 ms 154660 KB Output is correct
16 Correct 34 ms 154460 KB Output is correct
17 Correct 35 ms 154452 KB Output is correct
18 Correct 34 ms 154456 KB Output is correct
19 Correct 33 ms 154452 KB Output is correct
20 Correct 34 ms 154456 KB Output is correct
21 Correct 34 ms 154460 KB Output is correct
22 Correct 33 ms 154460 KB Output is correct
23 Correct 35 ms 154448 KB Output is correct
24 Correct 34 ms 154460 KB Output is correct
25 Correct 34 ms 154460 KB Output is correct
26 Correct 34 ms 154460 KB Output is correct
27 Correct 34 ms 154392 KB Output is correct
28 Correct 35 ms 154388 KB Output is correct
29 Correct 35 ms 154456 KB Output is correct
30 Correct 35 ms 154600 KB Output is correct
31 Correct 35 ms 154528 KB Output is correct
32 Incorrect 34 ms 154452 KB Output isn't correct
33 Halted 0 ms 0 KB -

Subtask #5
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 154448 KB Output is correct
2 Correct 34 ms 154448 KB Output is correct
3 Correct 33 ms 154460 KB Output is correct
4 Correct 35 ms 154388 KB Output is correct
5 Correct 34 ms 154452 KB Output is correct
6 Correct 34 ms 154456 KB Output is correct
7 Correct 35 ms 154456 KB Output is correct
8 Correct 33 ms 154472 KB Output is correct
9 Correct 35 ms 154388 KB Output is correct
10 Correct 35 ms 154252 KB Output is correct
11 Correct 36 ms 154716 KB Output is correct
12 Correct 33 ms 154460 KB Output is correct
13 Correct 33 ms 154452 KB Output is correct
14 Correct 34 ms 154388 KB Output is correct
15 Correct 35 ms 154660 KB Output is correct
16 Correct 34 ms 154460 KB Output is correct
17 Correct 35 ms 154452 KB Output is correct
18 Correct 34 ms 154456 KB Output is correct
19 Correct 33 ms 154452 KB Output is correct
20 Correct 34 ms 154456 KB Output is correct
21 Correct 34 ms 154460 KB Output is correct
22 Correct 33 ms 154460 KB Output is correct
23 Correct 35 ms 154448 KB Output is correct
24 Correct 34 ms 154460 KB Output is correct
25 Correct 34 ms 154460 KB Output is correct
26 Correct 34 ms 154460 KB Output is correct
27 Correct 34 ms 154392 KB Output is correct
28 Correct 35 ms 154388 KB Output is correct
29 Correct 35 ms 154456 KB Output is correct
30 Correct 35 ms 154600 KB Output is correct
31 Correct 35 ms 154528 KB Output is correct
32 Incorrect 34 ms 154452 KB Output isn't correct
33 Halted 0 ms 0 KB -

Subtask #6
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 154448 KB Output is correct
2 Correct 34 ms 154448 KB Output is correct
3 Correct 33 ms 154460 KB Output is correct
4 Correct 35 ms 154388 KB Output is correct
5 Correct 34 ms 154452 KB Output is correct
6 Correct 34 ms 154456 KB Output is correct
7 Correct 35 ms 154456 KB Output is correct
8 Correct 33 ms 154472 KB Output is correct
9 Correct 35 ms 154388 KB Output is correct
10 Correct 35 ms 154252 KB Output is correct
11 Correct 34 ms 154460 KB Output is correct
12 Correct 36 ms 154452 KB Output is correct
13 Incorrect 676 ms 302356 KB Output isn't correct
14 Halted 0 ms 0 KB -