Submission #1258249

#	Time	Username	Problem	Language	Result	Execution time	Memory
1258249		alizhan	Knapsack (NOI18_knapsack)	C++20	Compilation error	0 ms	0 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int s, n;
    cin >> s >> n;
    vector<pair<int, int>> items[2001];  

    for(int i = 0; i < n; i++) {
        int v, w, k;
        cin >> v >> w >> k;
        if(w <= s) items[w].push_back({v, k});
    }

    vector<int> dp(s + 1, INT_MIN);
    dp[0] = 0;

    for(int w = 1; w <= s; w++) {
        for(auto [v, k] : items[w]) {
            for(int p = 1; k > 0; p *= 2) {
                int take = min(p, k);
                for(int j = s; j >= w * take; j--) {
                    if(dp[j - w * take] != INT_MIN) {
                        dp[j] = max(dp[j], dp[j - w * take] + v * take);
                    }
                }
                k -= take;
            }
        }
    }

    cout << max(0LL, *max_element(dp.begin(), dp.end())) << endl;
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:35:16: error: no matching function for call to 'max(long long int, int&)'
   35 |     cout << max(0LL, *max_element(dp.begin(), dp.end())) << endl;
      |             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/specfun.h:45,
                 from /usr/include/c++/11/cmath:1935,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
                 from knapsack.cpp:1:
/usr/include/c++/11/bits/stl_algobase.h:254:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/11/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
knapsack.cpp:35:16: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   35 |     cout << max(0LL, *max_element(dp.begin(), dp.end())) << endl;
      |             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/specfun.h:45,
                 from /usr/include/c++/11/cmath:1935,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
                 from knapsack.cpp:1:
/usr/include/c++/11/bits/stl_algobase.h:300:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/11/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
knapsack.cpp:35:16: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   35 |     cout << max(0LL, *max_element(dp.begin(), dp.end())) << endl;
      |             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/string:52,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from knapsack.cpp:1:
/usr/include/c++/11/bits/stl_algo.h:3461:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)'
 3461 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/11/bits/stl_algo.h:3461:5: note:   template argument deduction/substitution failed:
knapsack.cpp:35:16: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   35 |     cout << max(0LL, *max_element(dp.begin(), dp.end())) << endl;
      |             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/string:52,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from knapsack.cpp:1:
/usr/include/c++/11/bits/stl_algo.h:3467:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)'
 3467 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/11/bits/stl_algo.h:3467:5: note:   template argument deduction/substitution failed:
knapsack.cpp:35:16: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   35 |     cout << max(0LL, *max_element(dp.begin(), dp.end())) << endl;
      |             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~