oj.uz

Submission #669582

# Submission time Handle Problem Language Result Execution time Memory
669582 2022-12-06T19:22:07 Z Dec0Dedd The Kingdom of JOIOI (JOI17_joioi) C++14
15 / 100
 38 ms 6608 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

#define sh short

const int N = 2e3+110;
const int INF = 1e9;

int a[N][N], cnt[N], h, w;
vector<int> v;

struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        // http://xorshift.di.unimi.it/splitmix64.c
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};

gp_hash_table<long long, int, custom_hash> hs;

void fs(int &number) {
    register int c;
    number = 0;
    c = getchar();
    for (; (c>47 && c<58); c=getchar()) number = number *10 + c - 48;
}

bool cmp(sh x, sh y) {
    return a[cnt[x]+1][x] > a[cnt[y]+1][y];
}

deque<int> tmp;

int solve() {
    memset(cnt, 0, sizeof(cnt));

    int res=INF, lis=INF, uis=-1;
    deque<int> q=tmp;

    priority_queue<sh, vector<sh>, function<bool(sh, sh)>> pq(cmp);
    pq.push(w);

    for (int k=0; k<(int)v.size(); ++k) {
        while (!pq.empty()) {
            if (a[cnt[pq.top()]+1][pq.top()] <= v[k]) {
                sh x=pq.top(); pq.pop();
                int val=a[cnt[x]+1][x]; ++hs[val];
                lis=min(lis, val), uis=max(uis, val);

                ++cnt[x];
                if (cnt[x] == h) continue;
                if (x == w || cnt[x+1] >= cnt[x]+1) pq.push(x);

                if (x == 1) continue;
                if (cnt[x] == cnt[x-1]+1) pq.push(x-1);
            } else break;
        }

        while (!q.empty()) {
            if (hs[q.front()] > 0) --hs[q.front()], q.pop_front();
            else break;
        }

        while (!q.empty()) {
            if (hs[q.back()] > 0) --hs[q.back()], q.pop_back();
            else break;
        }

        int lf;
        if (q.empty()) lf=INF;
        else lf=q.back()-q.front();

        res=min(res, max(lf, uis-lis));
    }

    return res;
}

void hor() {
    for (int i=1; i<h/2+1; ++i) {
        for (int j=1; j<=w; ++j) swap(a[i][j], a[h-i+1][j]);
    }
}

void ver() {
    for (int i=1; i<=h; ++i) {
        for (int j=1; j<w/2+1; ++j) swap(a[i][j], a[i][w-j+1]);
    }
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
    fs(h), fs(w);
    for (int i=1; i<=h; ++i) {
        for (int j=1; j<=w; ++j) {
            fs(a[i][j]);
            v.push_back(a[i][j]);
        }
    } sort(v.begin(), v.end());

    for (auto u : v) tmp.push_back(u);
    v.erase(unique(v.begin(), v.end()), v.end());

    int ans=solve();
    hor(); ans=min(ans, solve()); hor();

    ver();
    ans=min(ans, solve());
    hor(); ans=min(ans, solve()); hor();
    printf("%d\n", ans);
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct

Subtask #2
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 22 ms 1752 KB Output is correct
17 Correct 29 ms 6480 KB Output is correct
18 Correct 37 ms 6552 KB Output is correct
19 Correct 31 ms 6608 KB Output is correct
20 Correct 27 ms 6348 KB Output is correct
21 Correct 38 ms 6448 KB Output is correct
22 Correct 30 ms 6476 KB Output is correct
23 Correct 31 ms 6480 KB Output is correct
24 Incorrect 29 ms 6348 KB Output isn't correct
25 Halted 0 ms 0 KB -

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 22 ms 1752 KB Output is correct
17 Correct 29 ms 6480 KB Output is correct
18 Correct 37 ms 6552 KB Output is correct
19 Correct 31 ms 6608 KB Output is correct
20 Correct 27 ms 6348 KB Output is correct
21 Correct 38 ms 6448 KB Output is correct
22 Correct 30 ms 6476 KB Output is correct
23 Correct 31 ms 6480 KB Output is correct
24 Incorrect 29 ms 6348 KB Output isn't correct
25 Halted 0 ms 0 KB -