답안 #366418

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
366418 2021-02-14T07:19:51 Z dolphingarlic The Kingdom of JOIOI (JOI17_joioi) C++14
100 / 100
3952 ms 32876 KB
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;

int n, m, mx, grid[2000][2000], tmp[2000][2000];

void rot() {
	for (int i = 0; i < n; i++) for (int j = 0; j < m; j++)
		tmp[j][n - i - 1] = grid[i][j];
	swap(n, m);
	for (int i = 0; i < n; i++) for (int j = 0; j < m; j++)
		grid[i][j] = tmp[i][j];
}

bool check(int diff) {
	for (int _:{0,0,0,0}) {
		int lmx = 0, lmn = mx, lst = m;
		for (int i = 0; i < n; i++) {
			for (int j = 0; j < lst; j++) if (grid[i][j] < mx - diff) {
				lst = j;
				break;
			}
			for (int j = lst; j < m; j++) lmx = max(lmx, grid[i][j]), lmn = min(lmn, grid[i][j]);
		}
		if (lmx - lmn <= diff) return true;
		rot();
	}
	return false;
}

int main() {
	cin.tie(0)->sync_with_stdio(0);
	cin >> n >> m;
	for (int i = 0; i < n; i++) for (int j = 0; j < m; j++) {
		cin >> grid[i][j];
		mx = max(mx, grid[i][j]);
	}
	int l = 0, r = mx;
	while (l != r) {
		int mid = (l + r) / 2;
		if (check(mid)) r = mid;
		else l = mid + 1;
	}
	cout << l;
	return 0;
}

Compilation message

joioi.cpp: In function 'bool check(int)':
joioi.cpp:16:11: warning: unused variable '_' [-Wunused-variable]
   16 |  for (int _:{0,0,0,0}) {
      |           ^
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 2 ms 2028 KB Output is correct
16 Correct 5 ms 2284 KB Output is correct
17 Correct 12 ms 2540 KB Output is correct
18 Correct 12 ms 2540 KB Output is correct
19 Correct 10 ms 2540 KB Output is correct
20 Correct 9 ms 2540 KB Output is correct
21 Correct 20 ms 2668 KB Output is correct
22 Correct 14 ms 2668 KB Output is correct
23 Correct 14 ms 2668 KB Output is correct
24 Correct 19 ms 2540 KB Output is correct
25 Correct 19 ms 2668 KB Output is correct
26 Correct 19 ms 2668 KB Output is correct
27 Correct 16 ms 2668 KB Output is correct
28 Correct 24 ms 2668 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 2 ms 2028 KB Output is correct
16 Correct 5 ms 2284 KB Output is correct
17 Correct 12 ms 2540 KB Output is correct
18 Correct 12 ms 2540 KB Output is correct
19 Correct 10 ms 2540 KB Output is correct
20 Correct 9 ms 2540 KB Output is correct
21 Correct 20 ms 2668 KB Output is correct
22 Correct 14 ms 2668 KB Output is correct
23 Correct 14 ms 2668 KB Output is correct
24 Correct 19 ms 2540 KB Output is correct
25 Correct 19 ms 2668 KB Output is correct
26 Correct 19 ms 2668 KB Output is correct
27 Correct 16 ms 2668 KB Output is correct
28 Correct 24 ms 2668 KB Output is correct
29 Correct 2281 ms 32748 KB Output is correct
30 Correct 2089 ms 31724 KB Output is correct
31 Correct 2222 ms 32876 KB Output is correct
32 Correct 2627 ms 32876 KB Output is correct
33 Correct 2209 ms 31596 KB Output is correct
34 Correct 2035 ms 32416 KB Output is correct
35 Correct 3952 ms 32360 KB Output is correct
36 Correct 2804 ms 32108 KB Output is correct
37 Correct 2979 ms 32364 KB Output is correct