Cod sursa(job #1758267)

Utilizator TimitocArdelean Andrei Timotei Timitoc Data 16 septembrie 2016 21:36:29
Problema Struti Scor 80
Compilator cpp Status done
Runda Arhiva de probleme Marime 2.56 kb
#include <iostream>
#include <cstdio>
#define MAXN 1050

using namespace std;

template<
    class T,
    class Compare = std::less<T>
>
struct CompDeck
{
    int st, dr, k;
    Compare comp;
    T mat[MAXN];
    int when[MAXN];
    CompDeck(int sz = 5)
    {
        st = 0;
        dr = -1;
        k = sz;
        comp = Compare();
    }
    void add(T elem, int time)
    {
        while (st <= dr && !comp(mat[dr], elem))
            dr--;
        mat[++dr] = elem;
        when[dr] = time;
    }
    T get(int time)
    {
        while (time - when[st] >= k)
            st++;
        return mat[st];
    }
    void clear()
    {
        st = 0;
        dr = -1;
    }
};

int n, m, p;
int a[MAXN][MAXN];

void test()
{
    CompDeck<int, std::less<int> > deck(3);
    for (int i = 1; i <= 15; i++) {
        deck.add(2*i, i);
        cerr << deck.get(i) << " ";
    }
}

CompDeck<int, std::less<int> > minis[MAXN];
CompDeck<int, std::greater<int> > maxis[MAXN];

void solve(int dx, int dy, int &mini, int &cate)
{
    CompDeck<int, std::less<int> > cmi(dy);
    CompDeck<int, std::greater<int> > cma(dy);
    for (int i = 1; i <= m; i++)
    {
        minis[i] = CompDeck<int, std::less<int> >(dx);
        maxis[i] = CompDeck<int, std::greater<int> >(dx);
    }

    mini = 0x3f3f3f3f;
    cate = 0;
    CompDeck<int, std::less<int> > totmi(dy);
    CompDeck<int, std::greater<int> > totma(dy);
    for (int i = 1; i <= n; i++) {
		totmi.clear(); totma.clear();
		for (int j = 1; j <= m; j++) {
			minis[j].add(a[i][j], i);
			maxis[j].add(a[i][j], i);
			totmi.add(minis[j].get(i), j);
			totma.add(maxis[j].get(i), j);
            if (i >= dx && j >= dy) {
                int dif = totma.get(j) - totmi.get(j);
                if (dif < mini) {
					mini = dif;
					cate = 1;
                }
                else if (dif == mini)
					cate++;
            }
		}
    }
}

void go()
{
    scanf("%d %d %d", &n, &m, &p);
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= m; j++)
            scanf("%d", &a[i][j]);
    for (int i = 1; i <= p; i++)
    {
        int dx, dy;
        scanf("%d %d", &dx, &dy);
        int mini, cate, m2, c2;
        solve(dx, dy, mini, cate);
        if (dx == dy) {
			printf("%d %d\n", mini, cate);
            continue;
        }
        solve(dy, dx, m2, c2);
        if (mini == m2) printf("%d %d\n", mini, cate + c2);
        else if (mini < m2) printf("%d %d\n", mini, cate);
        else printf("%d %d\n", m2, c2);
    }
}

int main()
{
    freopen("struti.in", "r", stdin);
    freopen("struti.out", "w", stdout);

    go();
    //test();

    return 0;
}