Language: C++

#include <cstdio>
#include <cstring>
#include <algorithm>
using namespace std;
int dp[4001][4001]={};
char str1[4005],str2[4005];
short ans=0;
int main(){while(scanf("%s%s",str1,str2)!=-1){
  for(int i=0;i<strlen(str1);i++){
    for(int j=0;j<strlen(str2);j++){
      if(str1[i]==str2[j]){
         if(i==0 || j==0){ dp[i][j]=1;ans=max(ans,1);}
         else{ dp[i][j]=1+dp[i-1][j-1];ans=max(ans,dp[i][j]);}
      }}}printf("%d\n",ans); }return 0;}
   

Compiler output:
a.cc: In function 'int main()':
a.cc:12:46: error: no matching function for call to 'max(short int&, int)'
   12 |          if(i==0 || j==0){ dp[i][j]=1;ans=max(ans,1);}
      |                                           ~~~^~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from a.cc:3:
/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:12:46: note:   deduced conflicting types for parameter 'const _Tp' ('short int' and 'int')
   12 |          if(i==0 || j==0){ dp[i][j]=1;ans=max(ans,1);}
      |                                           ~~~^~~~~~~
/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:12:46: note:   mismatched types 'std::initializer_list<_Tp>' and 'short int'
   12 |          if(i==0 || j==0){ dp[i][j]=1;ans=max(ans,1);}
      |                                           ~~~^~~~~~~
a.cc:13:47: error: no matching function for call to 'max(short int&, int&)'
   13 |          else{ dp[i][j]=1+dp[i-1][j-1];ans=max(ans,dp[i][j]);}
      |                                            ~~~^~~~~~~~~~~~~~
/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:13:47: note:   deduced conflicting types for parameter 'const _Tp' ('short int' and 'int')
   13 |          else{ dp[i][j]=1+dp[i-1][j-1];ans=max(ans,dp[i][j]);}
      |                                            ~~~^~~~~~~~~~~~~~
/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:13:47: note:   mismatched types 'std::initializer_list<_Tp>' and 'short int'
   13 |          else{ dp[i][j]=1+dp[i-1][j-1];ans=max(ans,dp[i][j]);}
      |                                            ~~~^~~~~~~~~~~~~~