Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define rep1(i,n) for(int i=1;i<(int)(n);i++)
#define fs first
#define sc second
typedef pair<ll, ll> l_l;
#define EPS (1e-7)
#define INF (1e9)
#define PI (acos(-1))
int main(){
  string s,t;
  cin>>s>>t;
  int cnt=0;
  for(int i=stoi(s);i<=stoi(t);i++){
    if((s[0]==s[1]&&s[1]==s[3]&&s[3]==s[4])||(s[0]==s[4]&&s[1]==s[2]&&s[2]==s[3]))cnt++;
    s=stoi(s)+1;
    s=to_string(s);
  }
  cout <<cnt<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:16: error: no matching function for call to 'to_string(std::string&)'
   19 |     s=to_string(s);
      |       ~~~~~~~~~^~~
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:4240:3: note: candidate: 'std::string std::__cxx11::to_string(int)'
 4240 |   to_string(int __val)
      |   ^~~~~~~~~
/usr/include/c++/14/bits/basic_string.h:4240:17: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'int'
 4240 |   to_string(int __val)
      |             ~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:4259:3: note: candidate: 'std::string std::__cxx11::to_string(unsigned int)'
 4259 |   to_string(unsigned __val)
      |   ^~~~~~~~~
/usr/include/c++/14/bits/basic_string.h:4259:22: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'unsigned int'
 4259 |   to_string(unsigned __val)
      |             ~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:4275:3: note: candidate: 'std::string std::__cxx11::to_string(long int)'
 4275 |   to_string(long __val)
      |   ^~~~~~~~~
/usr/include/c++/14/bits/basic_string.h:4275:18: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'long int'
 4275 |   to_string(long __val)
      |             ~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:4294:3: note: candidate: 'std::string std::__cxx11::to_string(long unsigned int)'
 4294 |   to_string(unsigned long __val)
      |   ^~~~~~~~~
/usr/include/c++/14/bits/basic_string.h:4294:27: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'long unsigned int'
 4294 |   to_string(unsigned long __val)
      |             ~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:4310:3: note: candidate: 'std::string std::__cxx11::to_string(long long int)'
 4310 |   to_string(long long __val)
      |   ^~~~~~~~~
/usr/include/c++/14/bits/basic_string.h:4310:23: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'long long int'
 4310 |   to_string(long long __val)
      |             ~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:4327:3: note: candidate: 'std::string std::__cxx11::to_string(long long unsigned int)'
 4327 |   to_string(unsigned long long __val)
      |   ^~~~~~~~~
/usr/include/c++/14/bits/basic_string.h:4327:32: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'long long unsigned int'
 4327 |   to_string(unsigned long long __val)
      |             ~~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:4401:3: note: candidate: 'std::string std::__cxx11::to_string(float)'
 4401 |   to_string(float __val)
      |   ^~~~~~~~~
/usr/include/c++/14/bits/basic_string.h:4401:19: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'float'
 4401 |   to_string(float __val)
      |             ~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:4411:3: note: candidate: 'std::string std::__cxx11::to_string(double)'
 4411 |   to_string(double __val)
      |   ^~~~~~~~~
/usr/include/c++/14/bits/basic_string.h:4411:20: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'double'
 4411 |   to_string(double __val)
      |             ~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:4421:3: note: candidate: 'std::string std::__cxx11::to_string(long double)'
 4421 |   to_string(long double __val)
      |   ^~~~~~~~~
/usr/include/c++/14/bits/basic_string.h:4421:25: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'long double'
 4421 |   to_string(long double __val)
      |             ~~~~~~~~~~~~^~~~~