Submission #491325

#	Time	Username	Problem	Language	Result	Execution time	Memory
491325		DDTerziev04	Knapsack (NOI18_knapsack)	C++14	Compilation error	0 ms	0 KiB

knapsack

#include<iostream>
using namespace std;

const int MAXN=1e5, MAXS=2000;

long long dp[MAXS+1];
long long p[MAXN], w[MAXN], h[MAXN];

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    long long s, n;
    cin >> s >> n;

    for(int i=0; i<n; i++)
    {
        cin >> p[i] >> w[i] >> h[i];
    }

    for(int i=0; i<=s; i++)
    {
        dp[i]=-1;
    }
    dp[0]=0;

    int ans=0;
    for(int i=0; i<n; i++)
    {
        for(int j=s; j>=0; j--)
        {
            for(int u=1; u<=h[i] && u*w[i]<=j; u++)
            {
                if(dp[j-u*w[i]]==-1)
                {
                    continue;
                }

                dp[j]=max(dp[j], dp[j-u*w[i]]+u*p[i]);
            }

            ans=max(ans, dp[j]);
        }
    }

    cout << ans << "\n";

    return 0;
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:43:31: error: no matching function for call to 'max(int&, long long int&)'
   43 |             ans=max(ans, dp[j]);
      |                               ^
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:43:31: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   43 |             ans=max(ans, dp[j]);
      |                               ^
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:43:31: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   43 |             ans=max(ans, dp[j]);
      |                               ^