题目:
小A手上有一串珍珠链,共有 N 颗珍珠,珍珠的颜色值用 1 到 M 的整数表示。我们称一个珍珠链的 2×k 长度的子串是“漂亮的”,当且仅当该子串中前 k 个珠子的颜色值之和或最后 k 个珠子的颜色值之和都小于等于 S。
现给出珍珠链每颗珠子的颜色值,对于每一颗珠子,输出从该珍珠开始最长的漂亮子串的长度。
第一行包含整数 N 和 S。
下面的 N 行,每行包含珍珠链中的一个颜色值 si。这些整数都是正的且它们的和不超过 2×109。
输出共 N 行。第 i 行包含一个整数,表示从第 i 个珍珠开始最长的漂亮子串的长度
如果当前位置上没有漂亮子串,输出 0。
5 10000
1
1
1
1
1
4
4
2
2
0
5 9
1
1
10
1
9
2
0
0
2
0
8 3
1
1
1
1
1
1
1
1
6
6
6
4
4
2
2
0
【样例解释#1】
对于样例 1 的第一个位置,k 的值最大为 2,并且前两个珍珠颜色值加起来为 2,后两个珍珠颜色值加起来为 2,都小于 10000,故最长长度的漂亮子串长度为 4。
【数据范围】
对于 100% 的数据,2≤N≤105,1≤S≤2×109。 我的代码:
// C++ includes used for precompiling -*- C++ -*-
// Copyright (C) 2003-2014 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file stdc++.h
* This is an implementation file for a precompiled header.
*/
// 17.4.1.2 Headers
// C
#ifndef _GLIBCXX_NO_ASSERT
#include <cassert>
#endif
#include <cctype>
#include <cerrno>
#include <cfloat>
#include <ciso646>
#include <climits>
#include <clocale>
#include <cmath>
#include <csetjmp>
#include <csignal>
#include <cstdarg>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#if __cplusplus >= 201103L
#include <ccomplex>
#include <cfenv>
#include <cinttypes>
#include <cstdalign>
#include <cstdbool>
#include <cstdint>
#include <ctgmath>
#include <cwchar>
#include <cwctype>
#endif
// C++
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#if __cplusplus >= 201103L
#include <array>
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#endif
using namespace std;
int n,s,ans;
int arr[200010],b[200010];
int check(int a,int x){
if(b[a+x/2]-b[a]<=s&&b[a+x]-b[a+x/2]<=s){
return 1;
}
else{
return 0;
}
}
int main(){
cin>>n>>s;
for(int i=1;i<=n;i++){
cin>>arr[i];
b[i]=arr[i]+b[i-1];
}
int l=0,r=0;
for(int i=1;i<=n;i++){
cout<<endl<<endl<<endl;
r=n-i;
l=0;
ans=0;
while(l<=r){
int mid=(l+r)/2;
if(mid%2==1){
r--;
continue;
}
if(check(i,mid)){
ans=mid;
l=mid+1;
}
else{
r=mid-1;
}
}
cout<<ans<<endl;
}
return 0;
}