Language: C++

#include<iostream>
#include<bits/stdc++.h>
using namespace std;
int main()
{
	long long n,w;
	cin >> n >> w;
	vector<vector<long long> > a(n,vector<long long>(2));
	for(long long i=0;i<n;i++)
		cin >> a[i][0] >> a[i][1];
	long long val_sum =0;
	for(int i=0;i<n;i++)
		val_sum += a[i][1];
	vector<vector<long long> > dp(n+1,vector<long long>(val_sum+1,INT_MAX));
	for(long long i=0;i<=n;i++)
		dp[i][0] = 0;
	// for(long long i=0;i<=w;i++)
	// 	dp[0][i] = 0;

	for(long long item=1;item<=n;item++)
		for(long long value=1;value<=val_sum;value++)
			if(value >= a[item-1][1])
				dp[item][value] =min(dp[item-1][value],dp[item-1][value-a[item-1][1]] + a[item-1][0]);
			else 
			 	dp[item][value] = dp[item-1][value];
	long long res = 0;
	for(int i=0;i<= val_sum;i++)
			if(dp[n][i] <= w)
				res = max(res,i);
	cout << res;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:29:42: error: no matching function for call to 'max(long long int&, int&)'
   29 |                                 res = max(res,i);
      |                                       ~~~^~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:29:42: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   29 |                                 res = max(res,i);
      |                                       ~~~^~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:29:42: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   29 |                                 res = max(res,i);
      |                                       ~~~^~~~~~~