Language: C++

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

typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll> P;

#define pb push_back
#define rep(i, a, n) for(int i = (a); i < (n); i++)
#define dep(i, a, n) for(int i = (a); i >= (n); i--)
#define mod (ll)(1e9+7)

__attribute__((constructor))
void initial() {
  cin.tie(0);
  ios::sync_with_stdio(false);
}


map<ll, ll> dp[101];

signed main() {
  ll n, w;
  cin >> n >> w;
  P m[100];
  rep(i, 0, n) cin >> m[i].first >> m[i].second;
  dp[0][0] = 0;
  rep(i, 0, n) {
    for(auto it = dp[i].begin(); it != dp[i].end(); it++) {
      dp[i + 1][it->first + m[i].first] = max(dp[i + 1][it->first + m[i].first], dp[i][it->first] + m[i].second);
      dp[i + 1][it->first] = max(dp[i + 1][it->first], (int)it->second);
    }
  }
  int ans = 0;
  for(auto it = dp[n].begin(); it != dp[n].end(); it++) {
    if(it->first <= w) ans = max(ans, it->second);
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:31:33: error: no matching function for call to 'max(std::map<long long int, long long int>::mapped_type&, int)'
   31 |       dp[i + 1][it->first] = max(dp[i + 1][it->first], (int)it->second);
      |                              ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 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:31:33: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   31 |       dp[i + 1][it->first] = max(dp[i + 1][it->first], (int)it->second);
      |                              ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/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:
/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:31:33: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   31 |       dp[i + 1][it->first] = max(dp[i + 1][it->first], (int)it->second);
      |                              ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:36:33: error: no matching function for call to 'max(int&, long long int&)'
   36 |     if(it->first <= w) ans = max(ans, it->second);
      |                              ~~~^~~~~~~~~~~~~~~~~
/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:36:33: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   36 |     if(it->first <= w) ans = max(ans, it->second);
      |                              ~~~^~~~~~~~~~~~~~~~~
/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
/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:36:33: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   36 |     if(it->first <= w) ans = max(ans, it->second);
      |                              ~~~^~~~~~~~~~~~~~~~~