Submission #1045104

#	Time	Username	Problem	Language	Result	Execution time	Memory
1045104		DeathIsAwe	Gap (APIO16_gap)	C++14	30 / 100	32 ms	6556 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long

long long findGap(int test, int n) {
	ll arr[n];
	ll s, t, ans;
	if (test == 1) {
		ans = 0;
		s = 0; t = 1e18;
		for (int i=0;i<n/2;i++) {
			MinMax(s, t, &arr[i], &arr[n - i - 1]);
			s = arr[i] + 1; t = arr[n - i - 1] - 1;
		}
		if (n % 2 == 1) {
			MinMax(s, t, &arr[n/2], &arr[n/2]);
		}
		for (int i=1;i<n;i++) {
			ans = max(ans, arr[i] - arr[i-1]);
		}
		return ans;
	} else {
		ans = 0;
		s = 0; t = 1e18;
		MinMax(s, t, &arr[0], &arr[n-1]);
		if (n == 2) {
			return arr[1] - arr[0];
		}
		vector<ll> chunks(n - 2, (arr[n-1] - arr[0] - 1)/(n - 2));
		for (ll i=0;i<(arr[n-1] - arr[0] - 1)%(n - 2);i++) {
			chunks[i] ++;
		}
		vector<ll> nums = {arr[0]};
		ll bruh = arr[0] + 1, mn, mx;
		for (int i=0;i<n-2;i++) {
			MinMax(bruh, bruh + chunks[i] - 1, &mn, &mx);
			if (mn == -1) {
				continue;
			}
			nums.push_back(mn); nums.push_back(mx);
			bruh += chunks[i];
		}
		nums.push_back(arr[n-1]);
		for (ll i=1;i<nums.size();i++) {
			ans = max(ans, nums[i] - nums[i-1]);
		}
		return ans;
	}
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:45:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |   for (ll i=1;i<nums.size();i++) {
      |               ~^~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 0 / 70