Cod sursa(job #3354881)

Utilizator PetyAlexandru Peticaru Pety Data 21 mai 2026 02:33:27
Problema Struti Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 3.11 kb
#include <bits/stdc++.h>
 
#define ll long long
#define ld long double
 
using namespace std;
 

 
ifstream fin ("struti.in");
ofstream fout ("struti.out");
 
int n, m, p;
int v[1002][1002];
int dmin[1002][1002];
int dmax[1002][1002];

pair<int, int> sliding_window (int x, int y) {

    for (int i = 1; i <= n; i++) {
        deque <int> dqmin, dqmax;

        for (int j = 1; j <= m; j++) {
            while (!dqmin.empty() && v[i][dqmin.back()] >= v[i][j]) {
                dqmin.pop_back();
            }
            dqmin.push_back(j);
            while (!dqmax.empty() && v[i][dqmax.back()] <= v[i][j]) {
                dqmax.pop_back();
            }
            dqmax.push_back(j);
            if (j >= y) {
                if (dqmin.front() < j - y + 1) {
                    dqmin.pop_front();
                }
                if (dqmax.front() < j - y + 1) {
                    dqmax.pop_front();
                }
                dmin[i][j - y + 1] = v[i][dqmin.front()];
                dmax[i][j - y + 1] = v[i][dqmax.front()];
            }
        }
    }
    for (int j = 1; j <= m - y + 1; j++) {
        deque <int> dqmin, dqmax;

        for (int i = 1; i <= n; i++) {
            while (!dqmin.empty() && dmin[dqmin.back()][j] >= dmin[i][j]) {
                dqmin.pop_back();
            }
            dqmin.push_back(i);
            while (!dqmax.empty() && dmax[dqmax.back()][j] <= dmax[i][j]) {
                dqmax.pop_back();
            }
            dqmax.push_back(i);
            if (i >= x) {
                if (dqmin.front() < i - x + 1) {
                    dqmin.pop_front();
                }
                if (dqmax.front() < i - x + 1) {
                    dqmax.pop_front();
                }
                dmin[i - x + 1][j] = dmin[dqmin.front()][j];
                dmax[i - x + 1][j] = dmax[dqmax.front()][j];
            }
        }
    }
    int mn = 100000, cnt;
    for (int i = 1; i <= n - x + 1; i++) {
        for (int j = 1; j <= m - y + 1; j++) {
            if (dmax[i][j] - dmin[i][j] < mn) {
                mn = dmax[i][j] - dmin[i][j];
                cnt = 1;
            }
            else if (dmax[i][j] - dmin[i][j] == mn) {
                ++cnt;
            }
        }
    }
    return make_pair(mn, cnt);
}
 
 
int main()
{

    fin >> n >> m >> p;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            fin >> v[i][j];
        }
    }


    for (int i = 1; i <= p; i++) {
        int x, y;
        fin >> x >> y;
        auto a = sliding_window(x, y);
        if (x != y) {
            auto b = sliding_window(y, x);
            if (a.first < b.first) {
                fout << a.first << " " << a.second << "\n";
            }
            else if (a.first > b.first) {
                fout << b.first << " " << b.second << "\n";
            }
            else {
                fout << a.first << " " << a.second + b.second << "\n";
            }
        }
        else {
            fout << a.first << " " << a.second << "\n";
        }
    }
  
    return 0;
}