Submission #394436

#	Time	Username	Problem	Language	Result	Execution time	Memory
394436		danielcm585	Gap (APIO16_gap)	C++14	100 / 100	72 ms	3252 KiB

gap

#include "gap.h"

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

typedef long long ll;

const ll MX = 1e18;
ll x, y;
vector<ll> p;

void query(ll l, ll r) {
	MinMax(l,r,&x,&y);
	if (x != -1) p.push_back(x);
	if (y != -1) p.push_back(y);
}

ll findGap(int T, int N) {
	ll l = 0, r = MX;
	if (T == 1) {
		for (int i = 1; i <= (N+1)/2 && l <= r; i++) {
			query(l,r);
			l = x+1, r = y-1;
		}
	}
	else {
		query(l,r);
		l = x+1, r = y-1;
		for (int i = N-1; i > 0; i--) {
			ll q = l+(r-l)/i;
			query(l,q);
			l = q+1;
		}
	}
	sort(p.begin(),p.end());
	p.resize(unique(p.begin(),p.end())-p.begin());
	ll ans = 0;
	for (int i = 1; i < p.size(); i++) {
		ans = max(ans,p[i]-p[i-1]);
	}
	return ans;
}

Compilation message (stderr)

gap.cpp: In function 'll findGap(int, int)':
gap.cpp:38:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |  for (int i = 1; i < p.size(); i++) {
      |                  ~~^~~~~~~~~~

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