結果
| 問題 | No.2145 Segment +- |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2026-07-19 20:30:57 |
| 言語 | C++23 (gcc 15.2.0 + boost 1.90.0) |
| 結果 |
AC
|
| 実行時間 | 15 ms / 2,000 ms |
| + 765µs | |
| コード長 | 920 bytes |
| 記録 | |
| コンパイル時間 | 1,090 ms |
| コンパイル使用メモリ | 184,764 KB |
| 実行使用メモリ | 5,888 KB |
| 最終ジャッジ日時 | 2026-07-19 20:31:00 |
| 合計ジャッジ時間 | 3,031 ms |
|
ジャッジサーバーID (参考情報) |
judge2_0 / judge3_0 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 24 |
コンパイルメッセージ
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/vector:67,
from main.cpp:5:
In function '_ForwardIterator std::uninitialized_copy(_InputIterator, _InputIterator, _ForwardIterator) [with _InputIterator = long long int*; _ForwardIterator = long long int*]',
inlined from 'constexpr _ForwardIterator std::__uninitialized_copy_a(_InputIterator, _Sentinel, _ForwardIterator, allocator<_Tp>&) [with _InputIterator = long long int*; _Sentinel = long long int*; _ForwardIterator = long long int*; _Tp = long long int]' at /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/bits/stl_uninitialized.h:635:32,
inlined from 'constexpr std::vector<_Tp, _Alloc>& std::vector< <template-parameter-1-1>, <template-parameter-1-2> >::operator=(const std::vector< <template-parameter-1-1>, <template-parameter-1-2> >&) [with _Tp = long long int; _Alloc = std::allocator<long long int>]' at /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/bits/vector.tcc:257:35,
inlined from 'int main()' at main.cpp:42:6:
/home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/bits/stl_uninitialized.h:273:31: warning: 'void* __builtin_memcpy(void*, const void*, long unsigned int)' writing between 1 and 400 bytes into a region of size 0 overflows the destination [-Wstringop-overflow=]
273 | __builtin_memcpy(std::__niter_base(__result),
| ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
274 | std::__niter_base(__first),
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~
275 | __n * sizeof(_ValT));
| ~~~~~~~~~~~~~~~~~~~~
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/x86_64-pc-linux-gnu/bits/c++allocator.h:33,
from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/bits/allocator.h:46,
from
ソースコード
#include <iostream>
#include <string>
#include <ranges>
#include <algorithm>
#include <vector>
using namespace std;
using ll=long long;
int main(){
cin.tie(nullptr);
ios::sync_with_stdio(false);
int n;
string s;
cin>>n>>s;
ll inf=1e18;
int b=50;
vector<ll> dp(b,-inf);
dp[0]=0;
for(int i=0;i<n;i++){
vector<ll> ndp(b,-inf);
if(s[i]!='-'){
for(int j=0;j<b;j++){
if(dp[j]<0)continue;
if(j%2==0){
ndp[j]=max(ndp[j],dp[j]+1);
}else{
if(dp[j]>0)ndp[j]=max(ndp[j],dp[j]-1);
if(j<b-1)ndp[j+1]=max(ndp[j+1],dp[j]+1);
}
}
}
if(s[i]!='+'){
for(int j=0;j<b;j++){
if(dp[j]<0)continue;
if(j%2==1){
if(dp[j]>0)ndp[j]=max(ndp[j],dp[j]+1);
}else{
if(dp[j]>0)ndp[j]=max(ndp[j],dp[j]-1);
if(j<b-1)ndp[j+1]=max(ndp[j+1],dp[j]+1);
}
}
}
dp=ndp;
}
for(int i=0;i<b;i++){
if(dp[i]>=0){
cout<<(i+1)/2<<endl;
return 0;
}
}
}