제출 #105755

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
105755		Pro_ktmr	Gap (APIO16_gap)	C++14	50.50 / 100	125 ms	4104 KiB

gap

#include"bits/stdc++.h"
using namespace std;
#define LL long long
#define REP(i, n) for(int (i)=0; (i)<(n); (i)++)
#define PB push_back
#define MP make_pair
#define MOD 1000000007

#include"gap.h"

//MinMax(LL s, LL t, LL& mn, LL& mx)
//aiのうちs以上の最小の数がmnに、aiのうちt以下の最大値がmxに格納される

//aiの差分のうち最大のものを返す
LL findGap(int T, int N){
	if(T == 1){
		LL m = 0LL;
		LL M = 1000000000000000000LL;
		vector<LL> v;
		for(int i=0; i<(N+1)/2; i++){
			LL tmp1, tmp2;
			MinMax(m, M, &tmp1, &tmp2);
			v.PB(tmp1);
			v.PB(tmp2);
			m = tmp1+1;
			M = tmp2-1;
		}
		sort(v.begin(), v.end());

		LL ans = 0;
		for(int i=1; i<v.size(); i++){
			ans = max(ans, v[i] - v[i-1]);
		}
		return ans;
	}
	if(T == 2){

		LL B = 1000000000000000001LL / N;
		queue<pair<LL, LL>> kukan;
		for(LL i=0; i<=1000000000000000000LL; i+=B){
			kukan.push(MP(i,i+B-1));
		}
		vector<LL> v;
		while(kukan.size() > 0){
			LL m = kukan.front().first;
			LL M = kukan.front().second;
			kukan.pop();
			LL tmp1, tmp2;
			MinMax(m, M, &tmp1, &tmp2);
			if(tmp1 == -1) continue;
			v.PB(tmp1);
			if(tmp1 == tmp2) continue;
			v.PB(tmp2);

			B = (tmp2 - tmp1) / 4 + 1;
			for(LL i=tmp1+1; i<=tmp2-1; i+=B){
				kukan.push(MP(i, min(i+B-1,tmp2-1)));
			}
		}
		sort(v.begin(), v.end());
		LL ans = 0;
		for(int i=1; i<v.size(); i++){
			ans = max(ans, v[i] - v[i-1]);
		}
		return ans;
	}
}

컴파일 시 표준 에러 (stderr) 메시지

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:31:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=1; i<v.size(); i++){
                ~^~~~~~~~~
gap.cpp:62:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=1; i<v.size(); i++){
                ~^~~~~~~~~
gap.cpp:67:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

• Subtask 1: 30 / 30
• Subtask 2: 20.5042230198 / 70