Submission #22017

#	Time	Username	Problem	Language	Result	Execution time	Memory
22017		Hiasat	Gap (APIO16_gap)	C++14	100 / 100	63 ms	6772 KiB

gap

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

long long findGap(int T, int N) {
	ll mx = 0;
	if(T == 2){
		ll lo,hi;
		MinMax(1, 1e18, &lo, &hi);
		ll big = hi;
		ll sure = (hi-lo)/(N-1) + ((hi-lo)%(N-1) != 0);
		ll cur = lo;
		ll ed = lo + sure;
		ll prev = -1;
		ll step = sure;

		while(cur + step< big){

			MinMax(cur, ed, &lo, &hi);

			if(hi == -1 || hi == cur){
				ed = ed + step;
				continue;
			}
			step = max(step,hi - lo);
			if(prev != -1){
				step = max(step,lo - prev);
			}
			prev = hi;
			cur = hi+1;
			ed = cur + step;
		}
		return step;
	}else{
		ll lo = 1, hi = 1e18;
		int rem =(N+1)/2;
		while(rem--){
			ll a , b;
			MinMax(lo,hi,&a,&b);
			if(a == -1)
				break;
			v.push_back(a);
			v.push_back(b);
			lo = a+1;
			hi = b-1;
		}
	}
	sort(v.begin(),v.end());
	for (int i = 0; i+1 < v.size(); ++i){
		mx = max(mx,v[i+1]-v[i]);
	}
	return mx;
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:52:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i+1 < v.size(); ++i){
                      ^

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