Submission #317025

#	Time	Username	Problem	Language	Result	Execution time	Memory
317025		8e7	Maxcomp (info1cup18_maxcomp)	C++14	60 / 100	1080 ms	4228 KiB

maxcomp

#include <iostream>
#include <algorithm>
#include <utility>
#include <vector>
#define ll long long
#define pii pair<int, int>
#define maxn 1005
using namespace std;
int a[maxn][maxn], mi[maxn][maxn], ma[maxn][maxn];
int n, m;
inline int ab(int a) {
	return a > 0 ? a : -a;
}
/*
struct segtree {
	int seg[4 * maxn];
	void init(int cur, int l, int r, bool oper) {
		if (r <= l) return;
		if (r - l == 1) {
			seg[cur] = a[0][l];
			return;
		}
		int mid = (l + r) / 2;
		init(cur * 2, l, mid, oper);
		init(cur * 2 + 1, mid, r, oper);
		if (oper) seg[cur] = max(seg[cur * 2], seg[cur * 2 + 1]);
		else seg[cur] = min(seg[cur * 2], seg[cur * 2 + 1]);
	}
} s1, s2;
*/
int main() {
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin >> n >> m;
	for (int i = 0;i < n;i++) {
		for (int j = 0;j < m;j++) cin >> a[i][j];
	}
	int ans = -(1<<30);
	for (int x1 = 0;x1 < n;x1++) {
		for (int x2 = 0;x2 < n;x2++) {
			for (int y1 = 0;y1 < m;y1++) {
				for (int y2 = 0;y2 < m;y2++) {
					int dist = ab(x2 - x1) + ab(y2 - y1) + 1;
					//cout << x1 << " " << y1 << " " << x2 << " " << y2 << ' ' << dist << endl;
					ans = max(ans, max(a[x1][y1], a[x2][y2]) - min(a[x1][y1], a[x2][y2]) - dist);
				}
			}
		}
	}
	cout << ans << endl;
}

• Subtask 1: 15 / 15
• Subtask 2: 15 / 15
• Subtask 3: 30 / 30
• Subtask 4: 0 / 40