제출 #960055

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
960055		kim	Gap (APIO16_gap)	C++17	56.35 / 100	40 ms	4240 KiB

gap

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

long long findGap(int T, int N)
{
	if(T==1){
		ll a=1,b=1e18;
		vector<ll> vec;
		for(int i=0;i<N+1>>1;++i){
			MinMax(a,b,&a,&b);
			if(a==b) vec.eb(a);
			else vec.eb(a++), vec.eb(b--);
		}
		sort(vec.begin(),vec.end());
		ll ans=0;
		for(int i=1;i<vec.size();++i) ans=max(ans,vec[i]-vec[i-1]);
		return ans;
	}
	ll a,b,c,d;
	MinMax(1,1e18,&a,&b);
	if(N==2) return b-a;
	ll ans=(b-a+N-2)/(N-1);
	while(a+ans<b){
		MinMax(a+1,a+ans,&c,&d);
		if(d!=-1) a=d;
		else{
			MinMax(b-ans,b-1,&c,&d);
			if(d!=-1) b=c;
			else if(b-ans<=a+ans+1){
				ans=b-a;
				break;
			}
			else{
				MinMax(a+1,b-1,&c,&d);
				if(d!=-1){
					ans=max(c-a,b-d);
					a=c;
					b=d;
				}
				else{
					ans=b-a;
					break;
				}
			}
		}
	}
	return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:12:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   12 |   for(int i=0;i<N+1>>1;++i){
      |                 ~^~
gap.cpp:19:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |   for(int i=1;i<vec.size();++i) ans=max(ans,vec[i]-vec[i-1]);
      |               ~^~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 26.3542740388 / 70