답안 #170887

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
170887	2019-12-26T16:24:22 Z	emil_physmath	Gift (IZhO18_nicegift)	C++17	컴파일 오류	0 ms	0 KB

nicegift

#include <algorithm>
#include <iostream>
#include <vector>
#include <queue>
#include <cmath>
#include <map>
#include <set>
using namespace std;
typedef double ldouble;
typedef long long llong;
const int maxN = 100001;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n, k;
    cin >> n >> k;
    vector<llong> arr(n);
    multiset<pair<llong, int>> a;
    llong mx = -1, sum = 0;
    for (int i = 0; i < n; ++i)
    {
        cin >> arr[i];
        sum += arr[i];
        mx = max(mx, arr[i]);
        a.insert({arr[i], i});
    }
    if (sum % k || mx > sum / k)
    {
        cout << -1 << endl;
        exit(0);
    }
    vector<pair<llong, vector<int>>> ans;
    while (a.rbegin()->first)
    {
        vector<int> cur;
        llong mn = a.rbegin()->first;
        auto it = a.rbegin();
        for (; cur.size() < k; ++it)
        {
            cur.push_back(it->second);
            mn = min(mn, it->first);
        }
        if (it != a.rend())
            mn = min(mn, a.rbegin()->first - *it + 1);
        /*
        if (!mn)
        {
            cout << -1 << endl;
            exit(0);
        }
        */
        for (int x: cur)
        {
            a.erase({arr[x], x});
            a.insert({arr[x] -= mn, x});
        }
        ans.push_back({mn, cur});
        /*cerr << "a` ";
        for (pair<llong, int> i: a)
            cerr << i.first << ' ';
        cerr << endl;*/
    }
    cout << ans.size() << '\n';
    for (auto x: ans)
    {
        cout << x.first << ' ';
        for (int y: x.second)
            cout << y + 1 << ' ';
        cout << '\n';
    }
}
// 6 5 4 3 x
// x x-1 x-2 x-3 x

Compilation message

nicegift.cpp: In function 'int main()':
nicegift.cpp:41:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (; cur.size() < k; ++it)
                ~~~~~~~~~~~^~~
nicegift.cpp:47:44: error: no match for 'operator-' (operand types are 'const long long int' and 'const std::pair<long long int, int>')
             mn = min(mn, a.rbegin()->first - *it + 1);
                          ~~~~~~~~~~~~~~~~~~^~~~~
In file included from /usr/include/c++/7/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/7/algorithm:61,
                 from nicegift.cpp:1:
/usr/include/c++/7/bits/stl_iterator.h:389:5: note: candidate: template<class _IteratorL, class _IteratorR> constexpr decltype ((__y.base() - __x.base())) std::operator-(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)
     operator-(const reverse_iterator<_IteratorL>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_iterator.h:389:5: note:   template argument deduction/substitution failed:
nicegift.cpp:47:47: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'const long long int'
             mn = min(mn, a.rbegin()->first - *it + 1);
                                               ^~
In file included from /usr/include/c++/7/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/7/algorithm:61,
                 from nicegift.cpp:1:
/usr/include/c++/7/bits/stl_iterator.h:1191:5: note: candidate: template<class _IteratorL, class _IteratorR> constexpr decltype ((__x.base() - __y.base())) std::operator-(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)
     operator-(const move_iterator<_IteratorL>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_iterator.h:1191:5: note:   template argument deduction/substitution failed:
nicegift.cpp:47:47: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'const long long int'
             mn = min(mn, a.rbegin()->first - *it + 1);
                                               ^~
In file included from /usr/include/c++/7/vector:65:0,
                 from nicegift.cpp:3:
/usr/include/c++/7/bits/stl_bvector.h:208:3: note: candidate: std::ptrdiff_t std::operator-(const std::_Bit_iterator_base&, const std::_Bit_iterator_base&)
   operator-(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y)
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h:208:3: note:   no known conversion for argument 1 from 'const long long int' to 'const std::_Bit_iterator_base&'
In file included from /usr/include/c++/7/deque:64:0,
                 from /usr/include/c++/7/queue:60,
                 from nicegift.cpp:4:
/usr/include/c++/7/bits/stl_deque.h:351:5: note: candidate: template<class _Tp, class _Ref, class _Ptr> typename std::_Deque_iterator<_Tp, _Ref, _Ptr>::difference_type std::operator-(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)
     operator-(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_deque.h:351:5: note:   template argument deduction/substitution failed:
nicegift.cpp:47:47: note:   mismatched types 'const std::_Deque_iterator<_Tp, _Ref, _Ptr>' and 'const long long int'
             mn = min(mn, a.rbegin()->first - *it + 1);
                                               ^~
In file included from /usr/include/c++/7/deque:64:0,
                 from /usr/include/c++/7/queue:60,
                 from nicegift.cpp:4:
/usr/include/c++/7/bits/stl_deque.h:363:5: note: candidate: template<class _Tp, class _RefL, class _PtrL, class _RefR, class _PtrR> typename std::_Deque_iterator<_Tp, _Ref, _Ptr>::difference_type std::operator-(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _RefR, _PtrR>&)
     operator-(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
     ^~~~~~~~
/usr/include/c++/7/bits/stl_deque.h:363:5: note:   template argument deduction/substitution failed:
nicegift.cpp:47:47: note:   mismatched types 'const std::_Deque_iterator<_Tp, _Ref, _Ptr>' and 'const long long int'
             mn = min(mn, a.rbegin()->first - *it + 1);
                                               ^~