Submission #440999

#	Time	Username	Problem	Language	Result	Execution time	Memory
440999		asdf1234coding	Knapsack (NOI18_knapsack)	C++14	Compilation error	0 ms	0 KiB

knapsack

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
#define ll long long
#define MOD (ll) (1e9+7)

int main() {
    ios_base::sync_with_stdio(false);
    ll s,n; cin>>s>>n;
    vector<ll> v; // cost
    vector<ll> w; // weight
    vector<ll> k; // copies

    ll maxW = 0;
    
    for(ll i=0; i<n; i++) {
        ll a,b,c; cin>>a>>b>>c;
        v.push_back(a); w.push_back(b); k.push_back(c);
        maxW += w[i]*k[i];
    }

    vector<vector<int> > dp(n+1, vector<int> (s+1));

    dp[0][0] = 0;

    for(ll i=1; i<=n; i++) {
        for(ll j=0; j<=s; j++) {
            for(ll m=0; m<=k[i-1]; m++) {
                if(j>=(m*w[i-1])) { // if our current weight is greater than the weight of m copies of i
                    dp[i][j] = max(dp[i][j], dp[i-1][j-(m*w[i-1])] + m*v[i-1]);
                    //cout<<dp[i][j]<<'\t'<<i<<'\t'<<j<<'\t'<<endl;
                } else {
                    break;
                }
            }
        }
    }
    cout<<dp[n][s]<<endl;

}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:31:78: error: no matching function for call to 'max(__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type&, long long int)'
   31 |                     dp[i][j] = max(dp[i][j], dp[i-1][j-(m*w[i-1])] + m*v[i-1]);
      |                                                                              ^
In file included from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/ostream:38,
                 from /usr/include/c++/10/iostream:39,
                 from knapsack.cpp:1:
/usr/include/c++/10/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++/10/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
knapsack.cpp:31:78: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   31 |                     dp[i][j] = max(dp[i][j], dp[i-1][j-(m*w[i-1])] + m*v[i-1]);
      |                                                                              ^
In file included from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/ostream:38,
                 from /usr/include/c++/10/iostream:39,
                 from knapsack.cpp:1:
/usr/include/c++/10/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++/10/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
knapsack.cpp:31:78: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   31 |                     dp[i][j] = max(dp[i][j], dp[i-1][j-(m*w[i-1])] + m*v[i-1]);
      |                                                                              ^
In file included from /usr/include/c++/10/algorithm:62,
                 from knapsack.cpp:3:
/usr/include/c++/10/bits/stl_algo.h:3480:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)'
 3480 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3480:5: note:   template argument deduction/substitution failed:
knapsack.cpp:31:78: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   31 |                     dp[i][j] = max(dp[i][j], dp[i-1][j-(m*w[i-1])] + m*v[i-1]);
      |                                                                              ^
In file included from /usr/include/c++/10/algorithm:62,
                 from knapsack.cpp:3:
/usr/include/c++/10/bits/stl_algo.h:3486:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)'
 3486 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algo.h:3486:5: note:   template argument deduction/substitution failed:
knapsack.cpp:31:78: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   31 |                     dp[i][j] = max(dp[i][j], dp[i-1][j-(m*w[i-1])] + m*v[i-1]);
      |                                                                              ^