Submission #729045

#	Time	Username	Problem	Language	Result	Execution time	Memory
729045		kirakaminski968	Boxes with souvenirs (IOI15_boxes)	C++17	Compilation error	0 ms	0 KiB

boxes

#include <bits/stdc++.h>
using namespace std; 
long long delivery(int N, int K, int L, int *positions[]){
    long long ans = 0; 
    vector<long long> p; p.push_back(0); 
    for(auto c : positions) p.push_back(c); 
    long long pref[N + 2], suf[N + 2];
    pref[0] = suf[N+1] = 0;
    for(int i = 1;i <= N;++i)
    {
        pref[i] = (i<=K) ? a[i] * 2LL : p[i] * 2LL + pref[i - K];
    }
    for(int i = N;i>=1;--i)
    {
        suf[i] =(i+K-1>N) ? (L-p[i]) * 2LL : (L-a[i]) * 2LL + suf[i+K]; 
    }
    long long ans = suf[1];
    for(int i = 0; i <= N; i++)
    {
        ans = min(ans,pref[i] + suf[i + 1]);
        if(i+K <= N) ans = min(ans,pref[i]+L+suf[i + K + 1]); 
        else ans = min(ans, pref[i] + L);
    }
    return ans; 
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int**)':
boxes.cpp:6:18: error: 'begin' was not declared in this scope
    6 |     for(auto c : positions) p.push_back(c);
      |                  ^~~~~~~~~
boxes.cpp:6:18: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from boxes.cpp:1:
/usr/include/c++/10/valarray:1224:5: note:   'std::begin'
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from boxes.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:549:3: note:   'std::filesystem::__cxx11::begin'
  549 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
boxes.cpp:6:18: error: 'end' was not declared in this scope
    6 |     for(auto c : positions) p.push_back(c);
      |                  ^~~~~~~~~
boxes.cpp:6:18: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from boxes.cpp:1:
/usr/include/c++/10/valarray:1244:5: note:   'std::end'
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
In file included from /usr/include/c++/10/filesystem:46,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from boxes.cpp:1:
/usr/include/c++/10/bits/fs_dir.h:554:3: note:   'std::filesystem::__cxx11::end'
  554 |   end(recursive_directory_iterator) noexcept
      |   ^~~
boxes.cpp:11:28: error: 'a' was not declared in this scope
   11 |         pref[i] = (i<=K) ? a[i] * 2LL : p[i] * 2LL + pref[i - K];
      |                            ^
boxes.cpp:15:49: error: 'a' was not declared in this scope
   15 |         suf[i] =(i+K-1>N) ? (L-p[i]) * 2LL : (L-a[i]) * 2LL + suf[i+K];
      |                                                 ^
boxes.cpp:17:15: error: redeclaration of 'long long int ans'
   17 |     long long ans = suf[1];
      |               ^~~
boxes.cpp:4:15: note: 'long long int ans' previously declared here
    4 |     long long ans = 0;
      |               ^~~