Submission #762961

#	Time	Username	Problem	Language	Result	Execution time	Memory
762961		Antonn_114	Just Long Neckties (JOI20_ho_t1)	C++14	100 / 100	89 ms	6092 KiB

ho_t1

#include <bits/stdc++.h>
using namespace std;

// Write down the limits of the problem here

int main() {
	// Try to avoid cin, cout :)

	int tc = 1; // scanf("%d", &tc);
	while(tc--) {
		/// Your solution here
		int n;
		scanf("%d", &n);
		vector<pair<int, int>> a(n + 1);
		vector<int> b(n);
		for (int i = 0; i < n + 1; i ++){
			scanf("%d", &a[i].first);
			a[i].second = i;
		}
		for (int i = 0; i < n ; i++){
			scanf("%d", &b[i]);
		}
		sort(a.begin(), a.end());
		sort(b.begin(), b.end());
		vector<int> res(n + 1);
		vector<int> max_diff_cross(n + 1);
		for (int i = n; i >= 1; i--){
			max_diff_cross[i] = max(a[i].first - b[i - 1], 0);
			if (i != n) max_diff_cross[i] = max(max_diff_cross[i], max_diff_cross[i + 1]);
		}
		int max_diff_straight = 0;
		for (int i = 0; i <= n; i++){
			res[a[i].second] = max(i != n ? max_diff_cross[i + 1] : 0, max_diff_straight);
			max_diff_straight = max(max_diff_straight, max(a[i].first - b[i], 0));
		}
		for (int i = 0; i <= n; i++){
			printf("%d ", res[i]);
		}
	}
	return 0;
}

/*
 * Ermm don't underestimate Div2A, pls...
 * 
 * If there isn't a clear-cut approach for your program, DO NOT CODE YET!
 *
 * Write down some notes for more complicated problems
 * 
 * Also, please, CP isn't supposed to be complicated
 * 
**/

Compilation message (stderr)

ho_t1.cpp: In function 'int main()':
ho_t1.cpp:13:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |   scanf("%d", &n);
      |   ~~~~~^~~~~~~~~~
ho_t1.cpp:17:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |    scanf("%d", &a[i].first);
      |    ~~~~~^~~~~~~~~~~~~~~~~~~
ho_t1.cpp:21:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |    scanf("%d", &b[i]);
      |    ~~~~~^~~~~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 8 / 8
• Subtask 3: 91 / 91