結果

問題 No.1007 コイン集め
コンテスト
ユーザー ngtkana
提出日時 2020-03-07 17:46:34
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 46 ms / 1,500 ms
コード長 680 bytes
コンパイル時間 1,663 ms
コンパイル使用メモリ 168,908 KB
実行使用メモリ 5,248 KB
最終ジャッジ日時 2024-10-15 04:20:51
合計ジャッジ時間 3,374 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 19
権限があれば一括ダウンロードができます
コンパイルメッセージ
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/string:47,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/bits/locale_classes.h:40,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/bits/ios_base.h:41,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/ios:42,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/istream:38,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/sstream:38,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/complex:45,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/ccomplex:39,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/x86_64-pc-linux-gnu/bits/stdc++.h:54,
                 from main.cpp:1:
In member function '__gnu_cxx::__normal_iterator<_Iterator, _Container> __gnu_cxx::__normal_iterator<_Iterator, _Container>::operator+(difference_type) const [with _Iterator = int*; _Container = std::vector<int>]',
    inlined from 'int main()' at main.cpp:24:32:
/home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/bits/stl_iterator.h:1144:47: warning: 'l' may be used uninitialized [-Wmaybe-uninitialized]
 1144 |       { return __normal_iterator(_M_current + __n); }
      |                                               ^~~
main.cpp: In function 'int main()':
main.cpp:11:9: note: 'l' was declared here
   11 |     int l,r;
      |         ^
In member function '__gnu_cxx::__normal_iterator<_Iterator, _Container> __gnu_cxx::__normal_iterator<_Iterator, _Container>::operator+(difference_type) const [with _Iterator = int*; _Container = std::vector<int>]',
    inlined from 'int main()' at main.cpp:25:57:
/home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/bits/stl_iterator.h:1144:47: warning: 'r' may be used uninitializ

ソースコード

diff # 

#include<bits/stdc++.h>
int main(){
    int n,k;std::cin>>n>>k;k--;
    std::vector<int>a(n);
    for(int&x:a)std::cin>>x;
    long long K=a.at(k);
    if(K==0){
        std::cout<<0<<std::endl;
        return 0;
    }
    int l,r;
    for(int i=k+1;i<=n;i++){
        if(i==n||a.at(i)<2){
            r=i-(i==n||a.at(i)==0);
            break;
        }
    }
    for(int i=k-1;i>=-1;i--){
        if(i==-1||a.at(i)<2){
            l=i+(i==-1||a.at(i)==0);
            break;
        }
    }
    long long L=std::accumulate(a.begin()+l,a.begin()+k,0ll);
    long long R=std::accumulate(a.begin()+k+1,a.begin()+r+1,0ll);
    std::cout<<(K==1?std::max(L,R)+K:L+K+R)<<std::endl;
}
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