Submission #363152

#	Time	Username	Problem	Language	Result	Execution time	Memory
363152		alireza_kaviani	Gap (APIO16_gap)	C++11	100 / 100	71 ms	3296 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const ll INF = 1e18;

long long findGap(int t, int n){
	if(t == 1){
		ll l = 0 , r = INF , ansl , ansr , res = 0;
		vector<ll> ans;
		for(int i = 0 ; i < (n + 1) / 2 ; i++){
			MinMax(l , r , &ansl , &ansr);
			ans.push_back(ansl);
			ans.push_back(ansr);
			l = ansl + 1;
			r = ansr - 1;
		}
		sort(ans.begin() , ans.end());
		for(int i = 0 ; i + 1 < ans.size() ; i++){
			res = max(res , ans[i + 1] - ans[i]);
		}
		return res;
	}
	ll l , r , len , x;
	MinMax(0 , INF , &l , &r);
	len = r - l; x = (len + n - 2) / (n - 1);
	vector<ll> ans = {l , r};
	for(int i = 0 ; i < n - 1 ; i++){
		ll ql = l + i * x , qr = l + (i + 1) * x;
		ll ansl , ansr;
		MinMax(ql , qr - 1 , &ansl , &ansr);
		if(ansl == -1)	continue;
		ans.push_back(ansl);
		ans.push_back(ansr);
	}
	sort(ans.begin() , ans.end());
	ll res = 0;
	for(int i = 0 ; i + 1 < ans.size() ; i++){
		res = max(res , ans[i + 1] - ans[i]);
	}
	//cout << len << endl;
	return res;
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:22:25: 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 < ans.size() ; i++){
      |                   ~~~~~~^~~~~~~~~~~~
gap.cpp:41:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |  for(int i = 0 ; i + 1 < ans.size() ; i++){
      |                  ~~~~~~^~~~~~~~~~~~

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