Language: C++

#include<bits/stdc++.h>
#define ll          long long int
#define ios        	ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define M			1000000007
using namespace std;


int main() 
{   
  ios
    ll n,m ;
  cin>> n>> m ;
  ll dp[n][m] ;
  for(ll i=0;i<n;i++)
  {
    for(ll j=0;j<m;j++)
    {
    char s ;
    cin>> s ;
    if(s==".")
      dp[i][j]= 0 ;
      else
        dp[i][j]= INT_MIN ;
    }  
  }
  for(ll i=0;i<n;i++)
  {
    if(dp[i][0]!=INT_MIN)
      dp[i][0]=1 ;
  }
  for(ll i=0;i<m;i++)
  {
    if(dp[0][i]!=INT_MIN)
      dp[0][i]=1 ;
  }
  for(ll i=1;i<n;i++)
  {
    for(ll j=1; j<m;j++)
    {
      if(dp[i][j]==0)
      dp[i][j]= (max(dp[i-1][j],0)%M + max(dp[i][j-1],0)%M )%M
    }
  }
  cout<< dp[n-1][m-1] ;
  return 0 ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:9: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   20 |     if(s==".")
      |        ~^~~~~
a.cc:41:21: error: no matching function for call to 'max(long long int&, int)'
   41 |       dp[i][j]= (max(dp[i-1][j],0)%M + max(dp[i][j-1],0)%M )%M
      |                  ~~~^~~~~~~~~~~~~~
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:41:21: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   41 |       dp[i][j]= (max(dp[i-1][j],0)%M + max(dp[i][j-1],0)%M )%M
      |                  ~~~^~~~~~~~~~~~~~
/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:41:21: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   41 |       dp[i][j]= (max(dp[i-1][j],0)%M + max(dp[i][j-1],0)%M )%M
      |                  ~~~^~~~~~~~~~~~~~
a.cc:41:43: error: no matching function for call to 'max(long long int&, int)'
   41 |       dp[i][j]= (max(dp[i-1][j],0)%M + max(dp[i][j-1],0)%M )%M
      |                                        ~~~^~~~~~~~~~~~~~
/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:41:43: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   41 |       dp[i][j]= (max(dp[i-1][j],0)%M + max(dp[i][j-1],0)%M )%M
      |                                        ~~~^~~~~~~~~~~~~~
/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:41:43: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   41 |       dp[i][j]= (max(dp[i-1][j],0)%M + max(dp[i][j-1],0)%M )%M
      |                                        ~~~^~~~~~~~~~~~~~