#include <bits/stdc++.h> using namespace std; string s, arr[25005], lol; int n, i, j, x, ord[26], nxt=25; vector<char> mv; bool cmp(string i,string j){ for(int ii=0;ii<min(i.size(),j.size());ii++){ if(i[ii]!=j[ii]) return ord[i[ii]-'a']<ord[j[ii]-'a']; } return i.size()<j.size(); } int main(){ for(scanf("%d",&n),i=1;i<=n;i++){ cin >> arr[i]; if(arr[i].size()>lol.size()) lol = arr[i]; } for(auto v : lol){ if(ord[v-'a']) continue; ord[v-'a']=nxt--; } for(i=25;i>=0;i--){ if(ord[i]) continue; ord[i]=nxt--; } sort(arr+1,arr+n+1,cmp); for(i=1;i<=n;i++){ for(j=0;j<min(s.size(),arr[i].size());j++){ if(s[j]!=arr[i][j]) break; } while(s.size()>j){ mv.push_back('-'); s.pop_back(); } while(s.size()<arr[i].size()){ s.push_back(arr[i][s.size()]); mv.push_back(arr[i][s.size()-1]); } mv.push_back('P'); } printf("%d\n",mv.size()); for(auto v : mv) printf("%c\n",v); return 0; }

printer.cpp: In function 'bool cmp(std::__cxx11::string, std::__cxx11::string)':
printer.cpp:7:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int ii=0;ii<min(i.size(),j.size());ii++){
                  ~~^~~~~~~~~~~~~~~~~~~~~~~
printer.cpp: In function 'int main()':
printer.cpp:29:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(j=0;j<min(s.size(),arr[i].size());j++){
                 ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
printer.cpp:32:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while(s.size()>j){
               ~~~~~~~~^~
printer.cpp:42:28: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<char>::size_type {aka long unsigned int}' [-Wformat=]
     printf("%d\n",mv.size());
                   ~~~~~~~~~^
printer.cpp:14:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(scanf("%d",&n),i=1;i<=n;i++){
         ~~~~~~~~~~~~~~^~~~