oj.uz

Submission #669590

# Submission time Handle Problem Language Result Execution time Memory
669590 2022-12-06T19:43:59 Z Dec0Dedd The Kingdom of JOIOI (JOI17_joioi) C++14
60 / 100
 4000 ms 76896 KB 
#include <bits/stdc++.h>

using namespace std;

#define sh short
#define pp pair<sh, sh>

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

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

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<pp> tmp;

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

    int res=INF, lis=INF, uis=-1;
    deque<pp> 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];
                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()) {
            int i=q.front().first, j=q.front().second;
            if (i <= cnt[j]) q.pop_front();
            else break;
        }

        while (!q.empty()) {
            int i=q.back().first, j=q.back().second;
            if (i <= cnt[j]) q.pop_back();
            else break;
        }

        int lf;
        if (q.empty()) lf=INF;
        else {
            int x=a[q.back().first][q.back().second];
            int y=a[q.front().first][q.front().second];
            lf=x-y;
        }

        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]);
    }
}

bool cmpx(pp x, pp y) {
    return a[x.first][x.second] < a[y.first][y.second];
}

void filltmp() {
    tmp.clear();

    vector<pp> x;
    for (int i=1; i<=h; ++i) {
        for (int j=1; j<=w; ++j) x.push_back({i, j});
    } sort(x.begin(), x.end(), cmpx);
    for (auto u : x) tmp.push_back(u);
} 

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());
    v.erase(unique(v.begin(), v.end()), v.end());

    filltmp();
    int ans=solve();

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

    ver();
    filltmp();
    ans=min(ans, solve());
    hor(); 

    filltmp();
    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 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct

Subtask #2
45.0 / 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 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 30 ms 1884 KB Output is correct
17 Correct 41 ms 1948 KB Output is correct
18 Correct 41 ms 1952 KB Output is correct
19 Correct 39 ms 1956 KB Output is correct
20 Correct 40 ms 1796 KB Output is correct
21 Correct 44 ms 1956 KB Output is correct
22 Correct 42 ms 1920 KB Output is correct
23 Correct 41 ms 1964 KB Output is correct
24 Correct 35 ms 1772 KB Output is correct
25 Correct 41 ms 1844 KB Output is correct
26 Correct 40 ms 1952 KB Output is correct
27 Correct 41 ms 1856 KB Output is correct
28 Correct 40 ms 1948 KB Output is correct

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 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 30 ms 1884 KB Output is correct
17 Correct 41 ms 1948 KB Output is correct
18 Correct 41 ms 1952 KB Output is correct
19 Correct 39 ms 1956 KB Output is correct
20 Correct 40 ms 1796 KB Output is correct
21 Correct 44 ms 1956 KB Output is correct
22 Correct 42 ms 1920 KB Output is correct
23 Correct 41 ms 1964 KB Output is correct
24 Correct 35 ms 1772 KB Output is correct
25 Correct 41 ms 1844 KB Output is correct
26 Correct 40 ms 1952 KB Output is correct
27 Correct 41 ms 1856 KB Output is correct
28 Correct 40 ms 1948 KB Output is correct
29 Execution timed out 4078 ms 76896 KB Time limit exceeded
30 Halted 0 ms 0 KB -