oj.uz

Submission #363984

# Submission time Handle Problem Language Result Execution time Memory
363984 2021-02-07T19:38:38 Z NachoLibre The Kingdom of JOIOI (JOI17_joioi) C++17
100 / 100
 638 ms 37524 KB 
#include <bits/stdc++.h>
using namespace std;
#undef wambule
#define wambule
#define sz(a) ((int)a.size())
typedef vector<int> vint;
#ifndef wambule
#include ".h"
#else
#endif

const int N = 2003, M = N;
int n, m, a[N][M], ox, on = 1e9, z;

void X() {
	for(int i = 0; i < n; ++i) {
		for(int j = 0; j < m / 2; ++j) {
			swap(a[i][j], a[i][m - 1 - j]);
		}
	}
}

void Y() {
	for(int i = 0; i < n / 2; ++i) {
		for(int j = 0; j < m; ++j) {
			swap(a[i][j], a[n - 1 - i][j]);
		}
	}
}

bool C(int x) {
	int y = m;
	for(int i = 0; i < n; ++i) {
		for(int j = 0; j < y; ++j) {
			if(ox - x > a[i][j]) {
				y = j;
				break;
			}
		}
		for(int j = y; j < m; ++j) {
			if(on + x < a[i][j]) {
				return 0;
			}
		}
	}
	return 1;
}

int D() {
	int l = 0, r = ox - on;
	while(l < r) {
		int m = (l + r) / 2;
		// cout << m << " " << C(m) << endl;
		if(m == 7) ++z;
		if(C(m)) {
			r = m;
		} else {
			l = m + 1;
		}
	}
	return l;
}

#ifdef wambule
mt19937 rnd(time(0));
int R(int l, int r) {
	return 1ll * rnd() % (r - l + 1) + l;
}

const int inf = 1e9 + 1;
int ffp;
void G(int i, int y, int lx = 0, int ln = inf, int rx = 0, int rn = inf) {
	if(i == n) {
		if(ln == inf || rn == inf) return;
		ffp = min(ffp, max(lx - ln, rx - rn));
		return;
	}
	for(int j = -1; j < y; ++j) {
		int nln = inf, nlx = 0, nrn = inf, nrx = 0;
		for(int jj = 0; jj <= j; ++jj) {
			nln = min(nln, a[i][jj]);
			nlx = max(nlx, a[i][jj]);
		}
		for(int jj = j + 1; jj < m; ++jj) {
			nrn = min(nrn, a[i][jj]);
			nrx = max(nrx, a[i][jj]);
		}
		G(i + 1, j + 1, max(nlx, lx), min(nln, ln), max(nrx, rx), min(nrn, rn));
	}
}

int V() {
	ffp = inf;
	G(0, m);
	Y();
	G(0, m);
	X();
	G(0, m);
	Y();
	G(0, m);
	X();
	return ffp;
}

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int rtg = 1;
	if(rtg == 1) {
		cin >> n >> m;
		for(int i = 0; i < n; ++i) {
			for(int j = 0; j < m; ++j) {
				cin >> a[i][j];
				ox = max(ox, a[i][j]);
				on = min(on, a[i][j]);
			}
		}
		int fp = D();
		Y();
		fp = min(fp, D());
		X();
		fp = min(fp, D());
		Y();
		fp = min(fp, D());
		cout << fp << endl;
	} else if(rtg == 2) {
		n = m = 4;
		for(int i = 0; i < n; ++i) {
			for(int j = 0; j < m; ++j) {
				a[i][j] = R(0, 9);
				ox = max(ox, a[i][j]);
				on = min(on, a[i][j]);
			}
		}
		int fp = D();
		Y();
		fp = min(fp, D());
		X();
		fp = min(fp, D());
		Y();
		fp = min(fp, D());
		X();
		V();
		for(int i = 0; i < n; ++i) {
			for(int j = 0; j < m; ++j) {
				cout << a[i][j] << " ";
			}
			cout << endl;
		}
		cout << fp << " " << ffp << endl;
	}
	return 0;
}
#endif

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory 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 384 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory 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 384 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 3 ms 1388 KB Output is correct
17 Correct 6 ms 1516 KB Output is correct
18 Correct 6 ms 1516 KB Output is correct
19 Correct 6 ms 1516 KB Output is correct
20 Correct 6 ms 1388 KB Output is correct
21 Correct 8 ms 1644 KB Output is correct
22 Correct 8 ms 1644 KB Output is correct
23 Correct 8 ms 1644 KB Output is correct
24 Correct 7 ms 1516 KB Output is correct
25 Correct 8 ms 1644 KB Output is correct
26 Correct 8 ms 1644 KB Output is correct
27 Correct 8 ms 1644 KB Output is correct
28 Correct 8 ms 1644 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory 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 384 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 3 ms 1388 KB Output is correct
17 Correct 6 ms 1516 KB Output is correct
18 Correct 6 ms 1516 KB Output is correct
19 Correct 6 ms 1516 KB Output is correct
20 Correct 6 ms 1388 KB Output is correct
21 Correct 8 ms 1644 KB Output is correct
22 Correct 8 ms 1644 KB Output is correct
23 Correct 8 ms 1644 KB Output is correct
24 Correct 7 ms 1516 KB Output is correct
25 Correct 8 ms 1644 KB Output is correct
26 Correct 8 ms 1644 KB Output is correct
27 Correct 8 ms 1644 KB Output is correct
28 Correct 8 ms 1644 KB Output is correct
29 Correct 378 ms 25296 KB Output is correct
30 Correct 380 ms 37524 KB Output is correct
31 Correct 398 ms 22636 KB Output is correct
32 Correct 393 ms 22636 KB Output is correct
33 Correct 362 ms 34172 KB Output is correct
34 Correct 404 ms 36204 KB Output is correct
35 Correct 636 ms 28012 KB Output is correct
36 Correct 581 ms 25068 KB Output is correct
37 Correct 638 ms 26860 KB Output is correct