oj.uz

Submission #1003749

# Submission time Handle Problem Language Result Execution time Memory
1003749 2024-06-20T16:47:09 Z vako_p The Kingdom of JOIOI (JOI17_joioi) C++14
100 / 100
 3001 ms 137324 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back

const int mxN = 2e3 + 5;
ll n,m,a[mxN][mxN],b[mxN][mxN],x,y,p[mxN][mxN];
bool vis[mxN][mxN];

bool turn(ll mid){
	swap(x, y);
	y = n - y + 1;
	for(int j = 1; j <= m; j++){
		for(int i = n; i >= 1; i--){
			b[j][n - i + 1] = a[i][j];
		}
	}
	swap(n, m);
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= m; j++){
			a[i][j] = b[i][j];
			p[i][j] = max(p[i - 1][j], p[i][j - 1]);
			p[i][j] = max(p[i][j], a[i][j]);
			vis[i][j] = false;
		}
	}
	if(p[x][y] - a[x][y] > mid) return false;
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= m; j++){
			if(p[i][j] - a[x][y] > mid) break;
			vis[i][j] = true;
		}
	}
	ll mn = 1e17, mx = 0;
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= m; j++){
			if(vis[i][j]) continue;
			mx = max(mx, a[i][j]);
			mn = min(mn, a[i][j]);
		}
	}
	return (mx - mn <= mid);
}

bool ok(ll mid){
	return (turn(mid) or turn(mid) or turn(mid) or turn(mid));
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin >> n >> m;
	ll mn = 1e17;
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= m; j++){
			cin >> a[i][j];
			if(mn > a[i][j]){
				x = i;
				y = j;
				mn = a[i][j];
			}
		}
	}
	ll l = 0, r = 2e9;
	while(r > l + 1){
		ll mid = l + (r - l) / 2;
		if(ok(mid)) r = mid;
		else l = mid;
	}
	cout << r;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 600 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 608 KB Output is correct
14 Correct 1 ms 604 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 600 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 608 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 2 ms 3292 KB Output is correct
16 Correct 10 ms 4300 KB Output is correct
17 Correct 11 ms 4504 KB Output is correct
18 Correct 13 ms 4504 KB Output is correct
19 Correct 16 ms 4492 KB Output is correct
20 Correct 13 ms 4240 KB Output is correct
21 Correct 17 ms 4444 KB Output is correct
22 Correct 15 ms 4612 KB Output is correct
23 Correct 16 ms 4624 KB Output is correct
24 Correct 24 ms 4536 KB Output is correct
25 Correct 18 ms 4620 KB Output is correct
26 Correct 17 ms 4616 KB Output is correct
27 Correct 17 ms 4500 KB Output is correct
28 Correct 18 ms 4444 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 1 ms 600 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 608 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 2 ms 3292 KB Output is correct
16 Correct 10 ms 4300 KB Output is correct
17 Correct 11 ms 4504 KB Output is correct
18 Correct 13 ms 4504 KB Output is correct
19 Correct 16 ms 4492 KB Output is correct
20 Correct 13 ms 4240 KB Output is correct
21 Correct 17 ms 4444 KB Output is correct
22 Correct 15 ms 4612 KB Output is correct
23 Correct 16 ms 4624 KB Output is correct
24 Correct 24 ms 4536 KB Output is correct
25 Correct 18 ms 4620 KB Output is correct
26 Correct 17 ms 4616 KB Output is correct
27 Correct 17 ms 4500 KB Output is correct
28 Correct 18 ms 4444 KB Output is correct
29 Correct 2041 ms 120580 KB Output is correct
30 Correct 2020 ms 120028 KB Output is correct
31 Correct 2177 ms 121432 KB Output is correct
32 Correct 1975 ms 121504 KB Output is correct
33 Correct 1824 ms 117960 KB Output is correct
34 Correct 2189 ms 121708 KB Output is correct
35 Correct 2997 ms 137204 KB Output is correct
36 Correct 2545 ms 131596 KB Output is correct
37 Correct 3001 ms 137324 KB Output is correct