Submission #954786

#	Time	Username	Problem	Language	Result	Execution time	Memory
954786		Itamar	Gap (APIO16_gap)	C++14	100 / 100	56 ms	10696 KiB

gap

#include "gap.h"
using namespace std;
#define ll long long
#include <vector>
#define vll vector<ll>
#include <algorithm>
long long findGap(int T, int N)
{
	if (T == 1) {
		ll a = 0, b = 1e18;
		vll v;
		int num = 0;
		for (int it = 0; it < (N + 1)/2 ; it++) {
			auto *at = new ll, *bt = new ll;
			MinMax(a, b , at, bt);
			a = *at, b = *bt;
			v.push_back(a); v.push_back(b);
			a++, b--;
		}
		sort(v.begin(), v.end());
		ll ans = v[1]-v[0];
		for (int i = 0; i+1 < v.size(); i++)if(v[i]>-1)ans = max(ans, v[i + 1] - v[i]);
		return ans;
	}
	else {
		auto* a = new ll, * b = new  ll;
		MinMax(0, 1e18, a, b);
		vll v;
		ll d = ((* b) - (* a) + N - 2) / (N - 1);
		for (ll i = *a; i < *b; i += d + 1) {
			auto *c = new ll, * k = new ll;
			MinMax(i, i+d, c, k);
			v.push_back((ll)*c); v.push_back((ll) * k);
		}
		sort(v.begin(), v.end());
		ll ans = d;
		for (int i = 0; i+1 < v.size(); i++) {
			if (v[i] > -1) {
				ans = max(ans, v[i + 1] - v[i]);
			}
		}
		return ans;
	}
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |   for (int i = 0; i+1 < v.size(); i++)if(v[i]>-1)ans = max(ans, v[i + 1] - v[i]);
      |                   ~~~~^~~~~~~~~~
gap.cpp:12:7: warning: unused variable 'num' [-Wunused-variable]
   12 |   int num = 0;
      |       ^~~
gap.cpp:37:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |   for (int i = 0; i+1 < v.size(); i++) {
      |                   ~~~~^~~~~~~~~~

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