oj.uz

Submission #830152

# Submission time Handle Problem Language Result Execution time Memory
830152 2023-08-18T20:06:47 Z green_gold_dog Sandcastle 2 (JOI22_ho_t5) C++17
71 / 100
 5000 ms 319000 KB 
//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx,avx2,sse,sse2,sse3,ssse3,sse4,abm,popcnt,mmx")
#include <bits/stdc++.h>

using namespace std;

typedef int ll;
typedef double db;
typedef long double ldb;
typedef complex<double> cd;

constexpr ll INF64 = 9'000'000'000'000'000'000, INF32 = 2'000'000'000, MOD = 1'000'000'007;
constexpr db PI = acos(-1);
constexpr bool IS_FILE = false, IS_TEST_CASES = false;

random_device rd;
mt19937 rnd32(rd());
mt19937_64 rnd64(rd());

template<typename T>
bool assign_max(T& a, T b) {
        if (b > a) {
                a = b;
                return true;
        }
        return false;
}

template<typename T>
bool assign_min(T& a, T b) {
        if (b < a) {
                a = b;
                return true;
        }
        return false;
}

template<typename T>
T square(T a) {
        return a * a;
}

template<>
struct std::hash<pair<ll, ll>> {
        ll operator() (pair<ll, ll> p) const {
                return ((__int128)p.first * MOD + p.second) % INF64;
        }
};

ll get(vector<vector<vector<vector<vector<vector<ll>>>>>>& dp2, vector<vector<vector<vector<vector<vector<ll>>>>>>& pref, ll x1, ll y1, ll x2, ll y2, ll xg) {
        ll bu = min(2, xg - x1), bd = min(2, x2 - xg);
        if (y2 - y1 > 4) {
                return pref[xg][y2 - 2][bu][2][bd][2] - pref[xg][y1 + 2][bu][2][bd][2] + dp2[xg][y1][bu][0][bd][2] + dp2[xg][y1 + 1][bu][1][bd][2] + dp2[xg][y2 - 1][bu][2][bd][0] + dp2[xg][y2 - 2][bu][2][bd][1];
        }
        if (y2 - y1 == 4) {
                return dp2[xg][y1][bu][0][bd][2] + dp2[xg][y1 + 1][bu][1][bd][2] + dp2[xg][y2 - 1][bu][2][bd][0] + dp2[xg][y2 - 2][bu][2][bd][1];
        }
        if (y2 - y1 == 3) {
                return dp2[xg][y1][bu][0][bd][2] + dp2[xg][y1 + 1][bu][1][bd][1] + dp2[xg][y2 - 1][bu][2][bd][0];
        }
        if (y2 - y1 == 2) {
                return dp2[xg][y1][bu][0][bd][1] + dp2[xg][y2 - 1][bu][1][bd][0];
        }
        if (y2 - y1 == 1) {
                return dp2[xg][y1][bu][0][bd][0];
        }
        return 0;
}

void solve() {
        ll n, m;
        cin >> n >> m;
        bool b = false;
        if (n > m) {
                swap(n, m);
                b = true;
        }
        vector<vector<ll>> arr(n, vector<ll>(m));
        if (!b) {
                for (ll i = 0; i < n; i++) {
                        for (ll j = 0; j < m; j++) {
                                cin >> arr[i][j];
                        }
                }
        } else {
                for (ll i = 0; i < m; i++) {
                        for (ll j = 0; j < n; j++) {
                                cin >> arr[j][i];
                        }
                }
        }
        vector<vector<vector<vector<vector<vector<ll>>>>>> dp1(n, vector(m, vector(2, vector(2, vector(2, vector<ll>(2, -1))))));
        vector<vector<vector<vector<vector<vector<ll>>>>>> dp2(n, vector(m, vector(3, vector(3, vector(3, vector<ll>(3, 0))))));
        vector<vector<vector<vector<vector<vector<ll>>>>>> pref(n, vector(m + 1, vector(3, vector(3, vector(3, vector<ll>(3, 0))))));
        for (ll i = 0; i < n; i++) {
                for (ll j = 0; j < m; j++) {
                        ll mi = -1;
                        for (ll bu = 0; bu <= 1; bu++) {
                                if (bu && i == 0) {
                                        continue;
                                }
                                ll fir = mi;
                                if (bu && arr[i][j] > arr[i - 1][j]) {
                                        assign_max(mi, arr[i - 1][j]);
                                }
                                for (ll bl = 0; bl <= 1; bl++) {
                                        if (bl && j == 0) {
                                                continue;
                                        }
                                        ll fir = mi;
                                        if (bl && arr[i][j] > arr[i][j - 1]) {
                                                assign_max(mi, arr[i][j - 1]);
                                        }
                                        for (ll bd = 0; bd <= 1; bd++) {
                                                if (bd && i == n - 1) {
                                                        continue;
                                                }
                                                ll fir = mi;
                                                if (bd && arr[i][j] > arr[i + 1][j]) {
                                                        assign_max(mi, arr[i + 1][j]);
                                                }
                                                for (ll br = 0; br <= 1; br++) {
                                                        if (br && j == m - 1) {
                                                                continue;
                                                        }
                                                        ll fir = mi;
                                                        if (br && arr[i][j] > arr[i][j + 1]) {
                                                                assign_max(mi, arr[i][j + 1]);
                                                        }
                                                        dp1[i][j][bu][bl][bd][br] = mi;
                                                        mi = fir;
                                                }
                                                mi = fir;
                                        }
                                        mi = fir;
                                }
                                mi = fir;
                        }
                }
        }
        for (ll i = 0; i < n; i++) {
                for (ll j = 0; j < m; j++) {
                        for (ll bu = 0; bu <= 2; bu++) {
                                if (i - bu < 0) {
                                        continue;
                                }
                                for (ll bl = 0; bl <= 2; bl++) {
                                        if (j - bl < 0) {
                                                continue;
                                        }
                                        for (ll bd = 0; bd <= 2; bd++) {
                                                if (i + bd >= n) {
                                                        continue;
                                                }
                                                for (ll br = 0; br <= 2; br++) {
                                                        if (j + br >= m) {
                                                                continue;
                                                        }
                                                        if (bu) {
                                                                dp2[i][j][bu][bl][bd][br] += arr[i][j] == dp1[i - 1][j][bu - 1][min(bl, 1)][1][min(br, 1)];
                                                        }
                                                        if (bd) {
                                                                dp2[i][j][bu][bl][bd][br] += arr[i][j] == dp1[i + 1][j][1][min(bl, 1)][bd - 1][min(br, 1)];
                                                        }
                                                        if (bl) {
                                                                dp2[i][j][bu][bl][bd][br] += arr[i][j] == dp1[i][j - 1][min(bu, 1)][bl - 1][min(bd, 1)][1];
                                                        }
                                                        if (br) {
                                                                dp2[i][j][bu][bl][bd][br] += arr[i][j] == dp1[i][j + 1][min(bu, 1)][1][min(bd, 1)][br - 1];
                                                        }
                                                        dp2[i][j][bu][bl][bd][br] ^= 1;
                                                        pref[i][j + 1][bu][bl][bd][br] = pref[i][j][bu][bl][bd][br] + dp2[i][j][bu][bl][bd][br];
                                                }
                                        }
                                }
                        }
                }
        }
        ll ans = 0;
        for (ll i = 0; i < n; i++) {
                for (ll j = 0; j < m; j++) {
                        for (ll k = j + 1; k <= m; k++) {
                                ll na = 0;
                                for (ll aj = 0; aj + i < n; aj++) {
                                        ll ns = 0, sna = na;
                                        if (aj >= 3) {
                                                na += ns += get(dp2, pref, i, j, i + aj, k, i + aj - 3);
                                                if (na > 1) {
                                                        break;
                                                }
                                        }
                                        for (ll naj = max(0, aj - 2); naj <= aj; naj++) {
                                                ns += get(dp2, pref, i, j, i + aj, k, i + naj);
                                                if (sna + ns > 1) {
                                                        break;
                                                }
                                        }
                                        if (ns + sna == 1) {
                                                ans++;
                                        }
                                }
                        }
                }
        }
        cout << ans << '\n';
}

int main() {
        if (IS_FILE) {
                freopen("", "r", stdin);
                freopen("", "w", stdout);
        }
        ios_base::sync_with_stdio(false);
        cin.tie(0);
        cout.tie(0);
        ll t = 1;
        if (IS_TEST_CASES) {
                cin >> t;
        }
        for (ll i = 0; i < t; i++) {
                solve();
        }
}

Compilation message

Main.cpp:12:22: warning: overflow in conversion from 'long int' to 'll' {aka 'int'} changes value from '9000000000000000000' to '-494665728' [-Woverflow]
   12 | constexpr ll INF64 = 9'000'000'000'000'000'000, INF32 = 2'000'000'000, MOD = 1'000'000'007;
      |                      ^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:210:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  210 |                 freopen("", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~
Main.cpp:211:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  211 |                 freopen("", "w", stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Execution timed out 5058 ms 319000 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 724 KB Output is correct
2 Correct 1 ms 724 KB Output is correct
3 Correct 1 ms 724 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 724 KB Output is correct
2 Correct 1 ms 724 KB Output is correct
3 Correct 1 ms 724 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 29 ms 9812 KB Output is correct
8 Correct 40 ms 9884 KB Output is correct
9 Correct 15 ms 7092 KB Output is correct
10 Correct 52 ms 7124 KB Output is correct
11 Correct 34 ms 8404 KB Output is correct
12 Correct 33 ms 8468 KB Output is correct
13 Correct 12 ms 6928 KB Output is correct
14 Correct 10 ms 5060 KB Output is correct
15 Correct 18 ms 7224 KB Output is correct
16 Correct 11 ms 7124 KB Output is correct

Subtask #4
56.0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 724 KB Output is correct
2 Correct 1 ms 724 KB Output is correct
3 Correct 1 ms 724 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 29 ms 9812 KB Output is correct
8 Correct 40 ms 9884 KB Output is correct
9 Correct 15 ms 7092 KB Output is correct
10 Correct 52 ms 7124 KB Output is correct
11 Correct 34 ms 8404 KB Output is correct
12 Correct 33 ms 8468 KB Output is correct
13 Correct 12 ms 6928 KB Output is correct
14 Correct 10 ms 5060 KB Output is correct
15 Correct 18 ms 7224 KB Output is correct
16 Correct 11 ms 7124 KB Output is correct
17 Correct 459 ms 44972 KB Output is correct
18 Correct 69 ms 31948 KB Output is correct
19 Correct 154 ms 32844 KB Output is correct
20 Correct 1557 ms 31852 KB Output is correct
21 Correct 76 ms 31572 KB Output is correct
22 Correct 77 ms 31572 KB Output is correct
23 Correct 74 ms 30796 KB Output is correct
24 Correct 81 ms 28204 KB Output is correct
25 Correct 67 ms 31916 KB Output is correct
26 Correct 67 ms 32036 KB Output is correct
27 Correct 66 ms 31988 KB Output is correct
28 Correct 66 ms 31952 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 724 KB Output is correct
2 Correct 1 ms 724 KB Output is correct
3 Correct 1 ms 724 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 29 ms 9812 KB Output is correct
8 Correct 40 ms 9884 KB Output is correct
9 Correct 15 ms 7092 KB Output is correct
10 Correct 52 ms 7124 KB Output is correct
11 Correct 34 ms 8404 KB Output is correct
12 Correct 33 ms 8468 KB Output is correct
13 Correct 12 ms 6928 KB Output is correct
14 Correct 10 ms 5060 KB Output is correct
15 Correct 18 ms 7224 KB Output is correct
16 Correct 11 ms 7124 KB Output is correct
17 Correct 459 ms 44972 KB Output is correct
18 Correct 69 ms 31948 KB Output is correct
19 Correct 154 ms 32844 KB Output is correct
20 Correct 1557 ms 31852 KB Output is correct
21 Correct 76 ms 31572 KB Output is correct
22 Correct 77 ms 31572 KB Output is correct
23 Correct 74 ms 30796 KB Output is correct
24 Correct 81 ms 28204 KB Output is correct
25 Correct 67 ms 31916 KB Output is correct
26 Correct 67 ms 32036 KB Output is correct
27 Correct 66 ms 31988 KB Output is correct
28 Correct 66 ms 31952 KB Output is correct
29 Execution timed out 5057 ms 319000 KB Time limit exceeded
30 Halted 0 ms 0 KB -