Language: C++

#include <cmath>
#include <cstdlib>
#include <iostream>
#include <bitset>
#include <deque>
#include <list>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <vector>
#include <algorithm>
#include <iterator>
#include <string>
#include <chrono>
#include <random>
#include <tuple>
#include <utility>
#include <fstream>
#include <complex>
#define _USE_CMATH_DEFINES

const long INF = (1l << 30);
const long LINF = (1l << 60); //1.15*10^18

long n, a[3];

long encode(std::string x){
    if(x == "AB"){
        return 2;
    }else if(x == "BC"){
        return 0;
    }else{
        return 1;
    }
}

std::string decode(long key){
    if(key == 2){
        return "AB";
    }else if(key == 0){
        return "BC";
    }else{
        return "AC";
    }
}

long back(std::string x, std::string y, char c){
    return (encode(x)-encode(y)+(c-'A') + 15) % 3;
}

bool able(std::string x, char c){//can do c in x is designated
    if(a[3-encode(x)-(c-'A')] > 0){
        return true;
    }else{
        return false;
    }
}

int main(){
    scanf("%ld%ld%ld%ld", &n, a, a+1, a+2);
    std::string s[100005];
    for(int i = 0; i < n; i++){
        std::cin >> s[i];
    }
    std::string sum[100005];
    for(int i = 0; i < n; i++){
        if(i == 0){
            sum[i] = s[i];
        }else{
            if(sum[i-1] == "0"){
                sum[i] = s[i];
            }else if(sum[i-1] == s[i]){
                sum[i] = "0";
            }else{
                sum[i] = decode((3 - encode(sum[i-1]) - encode(s[i])));
            }
        }
    }
    char move[100005];
    for(char seed = 'A'; seed <= 'C'; seed++){
        if(seed == sum[n-1]){
            continue;
        }
        move[n-1] = seed;
        for(long i = n-2; i >= 0; i--){
            move[i] = back(sum[i], s[i+1], move[i+1]) + 'A';
        }
        /*
        for(int i = 0; i < n; i++){
            printf("%c ", move[i]);
        }
        printf("\n");
        //*/
        bool ans = true;
        for(int i = 0; i < n; i++){
            if(!able(sum[i], move[i])){
                ans = false;
            }
        }
        if(ans){
            printf("Yes\n");
            for(int i = 0; i < n; i++){
                printf("%c ", move[i]);
            }
            printf("\n");
            return 0;
        }
    }
    printf("No\n");
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:82:17: error: no match for 'operator==' (operand types are 'char' and 'std::string' {aka 'std::__cxx11::basic_string<char>'})
   82 |         if(seed == sum[n-1]){
      |            ~~~~ ^~ ~~~~~~~~
      |            |              |
      |            char           std::string {aka std::__cxx11::basic_string<char>}
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/c++allocator.h:33,
                 from /usr/include/c++/14/bits/allocator.h:46,
                 from /usr/include/c++/14/string:43,
                 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:3:
/usr/include/c++/14/bits/new_allocator.h:215:9: note: candidate: 'template<class _Up> bool std::operator==(const __new_allocator<char>&, const __new_allocator<_Tp>&)'
  215 |         operator==(const __new_allocator&, const __new_allocator<_Up>&)
      |         ^~~~~~~~
/usr/include/c++/14/bits/new_allocator.h:215:9: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::__new_allocator<_Tp>'
   82 |         if(seed == sum[n-1]){
      |                           ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/bits/specfun.h:43,
                 from /usr/include/c++/14/cmath:3906,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_pair.h:1033:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator==(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1033 |     operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1033:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'const std::pair<_T1, _T2>' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:67:
/usr/include/c++/14/bits/stl_iterator.h:441:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator==(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  441 |     operator==(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:441:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
/usr/include/c++/14/bits/stl_iterator.h:486:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator==(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  486 |     operator==(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:486:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
/usr/include/c++/14/bits/stl_iterator.h:1667:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator==(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1667 |     operator==(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1667:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
/usr/include/c++/14/bits/stl_iterator.h:1737:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator==(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1737 |     operator==(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1737:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
In file included from /usr/include/c++/14/iosfwd:42,
                 from /usr/include/c++/14/ios:40:
/usr/include/c++/14/bits/postypes.h:192:5: note: candidate: 'template<class _StateT> bool std::operator==(const fpos<_StateT>&, const fpos<_StateT>&)'
  192 |     operator==(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/postypes.h:192:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'const std::fpos<_StateT>' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
/usr/include/c++/14/bits/allocator.h:235:5: note: candidate: 'template<class _T1, class _T2> bool std::operator==(const allocator<_CharT>&, const allocator<_T2>&)'
  235 |     operator==(const allocator<_T1>&, const allocator<_T2>&)
      |     ^~~~~~~~
/usr/include/c++/14/bits/allocator.h:235:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'const std::allocator<_CharT>' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
In file included from /usr/include/c++/14/bits/basic_string.h:47,
                 from /usr/include/c++/14/string:54:
/usr/include/c++/14/string_view:629:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator==(basic_string_view<_CharT, _Traits>, __type_identity_t<basic_string_view<_CharT, _Traits> >)'
  629 |     operator==(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:629:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
/usr/include/c++/14/string_view:637:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator==(basic_string_view<_CharT, _Traits>, basic_string_view<_CharT, _Traits>)'
  637 |     operator==(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:637:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
/usr/include/c++/14/string_view:644:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator==(__type_identity_t<basic_string_view<_CharT, _Traits> >, basic_string_view<_CharT, _Traits>)'
  644 |     operator==(__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:644:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   'std::__cxx11::basic_string<char>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   82 |         if(seed == sum[n-1]){
      |                           ^
/usr/include/c++/14/bits/basic_string.h:3755:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3755 |     operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3755:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
/usr/include/c++/14/bits/basic_string.h:3772:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3772 |     operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3772:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
/usr/include/c++/14/bits/basic_string.h:3819:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3819 |     operator==(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3819:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'const _CharT*' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
In file included from /usr/include/c++/14/bits/memory_resource.h:47,
                 from /usr/include/c++/14/string:68:
/usr/include/c++/14/tuple:2558:5: note: candidate: 'template<class ... _TElements, class ... _UElements> constexpr bool std::operator==(const tuple<_UTypes ...>&, const tuple<_Elements ...>&)'
 2558 |     operator==(const tuple<_TElements...>& __t,
      |     ^~~~~~~~
/usr/include/c++/14/tuple:2558:5: note:   template argument deduction/substitution failed:
a.cc:82:27: note:   mismatched types 'const std::tuple<_UTypes ...>' and 'char'
   82 |         if(seed == sum[n-1]){
      |                           ^
In file included from /usr/include/c++/14/bits/locale_facets.h:48,
                 from /usr/include/c++/14/bits/basic_ios.h:37,
                 from /usr/include/c++/14/ios:46:
/usr/include/c++/14/bits/streambuf_iterator.h:234:5: note: candidate: 'template<class _CharT, class _Traits> bool std::operator==(const istreambuf_iterator<_CharT, _Traits>&, const istreambuf_iterator<_CharT, _Traits>&)'
  234 |     operator==(con