oj.uz

답안 #143071

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
143071 2019-08-12T21:54:26 Z godwind The Kingdom of JOIOI (JOI17_joioi) C++17
15 / 100
 13 ms 1656 KB 
#pragma GCC optimize("Ofast")
#pragma GCC optimize("no-stack-protector")
//#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("fast-math")
#pragma GCC target("sse,sse2,sse3,ssse3,popcnt,abm,mmx,tune=native")
#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <stdio.h>
#include <cstdio>
#include <math.h>
#include <cmath>
#include <string>
#include <cstring>
#include <queue>
#include <deque>
#include <random>
#include <iomanip>
#include <bitset>
                        
using namespace std;
                        
template<typename T> void uin(T &a, T b) {
    if (b < a) {
        a = b;
    }
}
                        
template<typename T> void uax(T &a, T b) {
    if (b > a) {
        a = b;
    }
}

#define ghost signed
#define left left228
#define right right228
#define complex complex228
#define count count228
#define sin sin228
#define list list228

const int N = 2003;
const int INF = 1e9 + 228;

int res = INF;
int n, m;
int a[N][N];
int left[N], right[N];
int mn = INF, mx = 0;

void solve() {
	int l = -1, r = mx - mn;
	while (r - l > 1) {
		int mid = (l + r) >> 1;
		int x = mid;
		for (int i = 1; i <= n; ++i) {
			left[i] = 0, right[i] = n + 1;
			for (int j = 1; j <= m; ++j) {
				if (a[i][j] > mn + x && right[i] == n + 1) right[i] = j - 1;
				if (a[i][j] < mx - x) left[i] = j;
			}
		}
		bool OK1 = 1, OK2 = 1;
		int last1 = left[1], last2 = right[1];
		if (left[1] > right[1]) OK1 = OK2 = 0;
		for (int i = 2; i <= n; ++i) {
			if (max(last1, left[i]) > right[i]) OK1 = 0;
			uax(last1, left[i]);
			if (min(last2, right[i]) < left[i]) OK2 = 0;
			uin(last2, right[i]);
		}
		if (OK1 || OK2) r = mid;
		else l = mid;
	}
	uin(res, r);
}

ghost main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
	cin >> n >> m;
	for (int i = 1; i <= n; ++i) {
		for (int j = 1; j <= m; ++j) {
			cin >> a[i][j];
			uax(mx, a[i][j]);
			uin(mn, a[i][j]);
		}
	}
	res = mx - mn;
	solve();
	for (int i = 1; i <= n; ++i) {
		for (int j = 1; j <= m / 2; ++j) {
			swap(a[i][j], a[i][m - j + 1]);
		}
	}
	solve();
	cout << res << '\n';
    return 0;
} // kek ;
// Ого! Кажетсья это $#@!

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 3 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct

Subtask #2
0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 3 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 3 ms 504 KB Output is correct
16 Correct 7 ms 1400 KB Output is correct
17 Correct 11 ms 1528 KB Output is correct
18 Correct 11 ms 1528 KB Output is correct
19 Correct 13 ms 1656 KB Output is correct
20 Incorrect 10 ms 1400 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #3
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 3 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 3 ms 504 KB Output is correct
16 Correct 7 ms 1400 KB Output is correct
17 Correct 11 ms 1528 KB Output is correct
18 Correct 11 ms 1528 KB Output is correct
19 Correct 13 ms 1656 KB Output is correct
20 Incorrect 10 ms 1400 KB Output isn't correct
21 Halted 0 ms 0 KB -