Language: C++

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

typedef long long ll;

int main()
{
    int H,W;
    cin>>H>>W;
    ll** dp=new ll*[H];
    int** mat=new int*[H];

    for(int i=0;i<H;i++)
    {
        mat[i]=new int[W];
        dp[i]=new ll[W];
        char ch;
        for(int j=0;j<W;j++)
        {
            cin>>ch;
            if(ch=='.')
            {
                mat[i][j]=0;
                dp[i][j]=0;
            }
            else
            {
                mat[i][j]=1;
                dp[i][j]=0;
            }
        }
    }
    dp[0][0]=1;
    for(int i=0;i<H;i++)
    {
        for(int j=0;j<W;j++)
        {
            if(mat[i][j]==0)
            {
                int ans=0;
                int ans1=0;
                if(i>0)
                    ans=max(dp[i-1][j],ans);
                if(j>0)
                    ans1=max(dp[i][j-1],ans1);
                dp[i][j]=(ans+ans1)%1000000007;
            }
        }
    }
    cout<<dp[H-1][W-1];
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:44:28: error: no matching function for call to 'max(ll&, int&)'
   44 |                     ans=max(dp[i-1][j],ans);
      |                         ~~~^~~~~~~~~~~~~~~~
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:44:28: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   44 |                     ans=max(dp[i-1][j],ans);
      |                         ~~~^~~~~~~~~~~~~~~~
/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:44:28: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   44 |                     ans=max(dp[i-1][j],ans);
      |                         ~~~^~~~~~~~~~~~~~~~
a.cc:46:29: error: no matching function for call to 'max(ll&, int&)'
   46 |                     ans1=max(dp[i][j-1],ans1);
      |                          ~~~^~~~~~~~~~~~~~~~~
/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:46:29: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   46 |                     ans1=max(dp[i][j-1],ans1);
      |                          ~~~^~~~~~~~~~~~~~~~~
/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:46:29: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   46 |                     ans1=max(dp[i][j-1],ans1);
      |                          ~~~^~~~~~~~~~~~~~~~~