oj.uz

Submission #995083

# Submission time Handle Problem Language Result Execution time Memory
995083 2024-06-08T12:23:59 Z _callmelucian The Kingdom of JOIOI (JOI17_joioi) C++14
60 / 100
 1767 ms 262148 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pl;
typedef pair<int,int> pii;
typedef tuple<int,int,int> tt;

#define all(a) a.begin(), a.end()
#define filter(a) a.erase(unique(all(a)), a.end())

vector<int> cmp;

int getID (int targ) {
    return lower_bound(all(cmp), targ) - cmp.begin();
}

const int mn = 4e6 + 6;
int lo[2002][2002], hi[2002][2002], loCol[2002][2002], hiCol[2002][2002];
int calcLo[mn], calcHi[mn];
vector<pii> contain[mn];

bool check (int delta) {
    int pos = -1, curLo = INT_MAX, curHi = INT_MIN;
    for (int k = 0; k < cmp.size(); k++) {
        while (pos + 1 < cmp.size() && cmp[pos + 1] < cmp[k] - delta) {
            pos++;
            for (auto [row, col] : contain[pos]) {
                curLo = min(curLo, lo[row][col]);
                curHi = max(curHi, hi[row][col]);
            }
        }
        int cHi = max(calcHi[k], curHi);
        int cLo = min(calcLo[k], curLo);
        if (cHi == INT_MIN || cHi - cLo <= delta) return 1;
    }
    return 0;
}

int solve (vector<vector<int>> &vec, int n, int m) {
    for (int j = 1; j <= m; j++) {
        int curLo = INT_MAX, curHi = INT_MIN;
        for (int i = n; i >= 1; i--) {
            loCol[i][j] = curLo = min(curLo, vec[i][j]);
            hiCol[i][j] = curHi = max(curHi, vec[i][j]);
        }
    }

    for (int i = 1; i <= n; i++) {
        int curLo = INT_MAX, curHi = INT_MIN;
        for (int j = 1; j <= m; j++) {
            lo[i][j] = curLo = min(curLo, loCol[i][j]);
            hi[i][j] = curHi = max(curHi, hiCol[i][j]);
        }
    }

    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= m; j++)
            contain[getID(vec[i][j])].push_back(make_pair(i, j));

    int curLo = INT_MAX, curHi = INT_MIN;
    for (int k = cmp.size() - 1; k >= 0; k--) {
        calcLo[k] = curLo, calcHi[k] = curHi;
        for (auto [row, col] : contain[k]) {
            curLo = min(curLo, lo[row][col]);
            curHi = max(curHi, hi[row][col]);
        }
    }

    int ans = 0;
    if (!check(0)) {
        for (int i = 29; i >= 0; i--) {
            int mask = ans | (1 << i);
            if (!check(mask)) ans |= (1 << i);
        }
        ans++;
    }

    for (int k = 0; k < cmp.size(); k++)
        contain[k].clear();
    return ans;
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n, m; cin >> n >> m;
    vector<vector<int>> vec(n + 1, vector<int>(m + 1));
    vector<vector<int>> rot(m + 1, vector<int>(n + 1));

    //cmp.push_back(0);
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            cin >> vec[i][j];
            rot[j][n - i + 1] = vec[i][j];
            cmp.push_back(vec[i][j]);
        }
    }
    sort(all(cmp)); filter(cmp);

    cout << min(solve(vec, n, m), solve(rot, m, n));

    return 0;
}

Compilation message

joioi.cpp: In function 'bool check(int)':
joioi.cpp:26:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     for (int k = 0; k < cmp.size(); k++) {
      |                     ~~^~~~~~~~~~~~
joioi.cpp:27:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |         while (pos + 1 < cmp.size() && cmp[pos + 1] < cmp[k] - delta) {
      |                ~~~~~~~~^~~~~~~~~~~~
joioi.cpp:29:23: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   29 |             for (auto [row, col] : contain[pos]) {
      |                       ^
joioi.cpp: In function 'int solve(std::vector<std::vector<int> >&, int, int)':
joioi.cpp:65:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   65 |         for (auto [row, col] : contain[k]) {
      |                   ^
joioi.cpp:80:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |     for (int k = 0; k < cmp.size(); k++)
      |                     ~~^~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 105048 KB Output is correct
2 Correct 20 ms 105052 KB Output is correct
3 Correct 18 ms 105208 KB Output is correct
4 Correct 20 ms 105048 KB Output is correct
5 Correct 16 ms 105048 KB Output is correct
6 Correct 15 ms 105048 KB Output is correct
7 Correct 16 ms 105052 KB Output is correct
8 Correct 16 ms 105152 KB Output is correct
9 Correct 16 ms 105236 KB Output is correct
10 Correct 16 ms 105048 KB Output is correct
11 Correct 16 ms 105220 KB Output is correct
12 Correct 16 ms 105052 KB Output is correct
13 Correct 20 ms 105308 KB Output is correct
14 Correct 18 ms 105052 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 105048 KB Output is correct
2 Correct 20 ms 105052 KB Output is correct
3 Correct 18 ms 105208 KB Output is correct
4 Correct 20 ms 105048 KB Output is correct
5 Correct 16 ms 105048 KB Output is correct
6 Correct 15 ms 105048 KB Output is correct
7 Correct 16 ms 105052 KB Output is correct
8 Correct 16 ms 105152 KB Output is correct
9 Correct 16 ms 105236 KB Output is correct
10 Correct 16 ms 105048 KB Output is correct
11 Correct 16 ms 105220 KB Output is correct
12 Correct 16 ms 105052 KB Output is correct
13 Correct 20 ms 105308 KB Output is correct
14 Correct 18 ms 105052 KB Output is correct
15 Correct 18 ms 113500 KB Output is correct
16 Correct 23 ms 114124 KB Output is correct
17 Correct 39 ms 115156 KB Output is correct
18 Correct 38 ms 115152 KB Output is correct
19 Correct 39 ms 115144 KB Output is correct
20 Correct 39 ms 114872 KB Output is correct
21 Correct 40 ms 115156 KB Output is correct
22 Correct 43 ms 115156 KB Output is correct
23 Correct 41 ms 115160 KB Output is correct
24 Correct 39 ms 114912 KB Output is correct
25 Correct 41 ms 115064 KB Output is correct
26 Correct 39 ms 115152 KB Output is correct
27 Correct 39 ms 115060 KB Output is correct
28 Correct 50 ms 115008 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 105048 KB Output is correct
2 Correct 20 ms 105052 KB Output is correct
3 Correct 18 ms 105208 KB Output is correct
4 Correct 20 ms 105048 KB Output is correct
5 Correct 16 ms 105048 KB Output is correct
6 Correct 15 ms 105048 KB Output is correct
7 Correct 16 ms 105052 KB Output is correct
8 Correct 16 ms 105152 KB Output is correct
9 Correct 16 ms 105236 KB Output is correct
10 Correct 16 ms 105048 KB Output is correct
11 Correct 16 ms 105220 KB Output is correct
12 Correct 16 ms 105052 KB Output is correct
13 Correct 20 ms 105308 KB Output is correct
14 Correct 18 ms 105052 KB Output is correct
15 Correct 18 ms 113500 KB Output is correct
16 Correct 23 ms 114124 KB Output is correct
17 Correct 39 ms 115156 KB Output is correct
18 Correct 38 ms 115152 KB Output is correct
19 Correct 39 ms 115144 KB Output is correct
20 Correct 39 ms 114872 KB Output is correct
21 Correct 40 ms 115156 KB Output is correct
22 Correct 43 ms 115156 KB Output is correct
23 Correct 41 ms 115160 KB Output is correct
24 Correct 39 ms 114912 KB Output is correct
25 Correct 41 ms 115064 KB Output is correct
26 Correct 39 ms 115152 KB Output is correct
27 Correct 39 ms 115060 KB Output is correct
28 Correct 50 ms 115008 KB Output is correct
29 Correct 1767 ms 262144 KB Output is correct
30 Runtime error 1705 ms 262148 KB Memory limit exceeded
31 Halted 0 ms 0 KB -