Submission #1178893

#	Time	Username	Problem	Language	Result	Execution time	Memory
1178893		sasde	Type Printer (IOI08_printer)	C++20	0 / 100	38 ms	38076 KiB

printer

#include<bits/stdc++.h>
#define task "strdel"
#define ii pair<int,int>
#define iii pair<int,ii>
#define iv pair<ii,ii>
#define se second
#define fi first
#define ffi fi.fi
#define sfi se.fi
#define sse se.se
#define fse fi.se
#define lt(i, c, d) for(int i = c; i <= d; ++i)
#define fl(i, c, d) for(int i = d; i >= c; --i)
#define pb push_back
#define emb emplace_back
#define emf emplace_front
#define em emplace
using namespace std;
const int N=3e4+5,lg=20,mod=1e9+7;
mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());
int Rand(int u,int v){
 return u+rd()%(v-u+1);
}
struct Trie
{ 
  Trie *child[26]={};
  int cnt=0;
}tr;
void add(Trie *tr,string s){
  Trie *cur=tr;
 
  for(int i=0;i<s.size();++i){
    int c=s[i]-'a';
    if(cur->child[c]==NULL)cur->child[c]=new Trie;
    cur->child[c]->cnt++;
    cur=cur->child[c];
  }
}
void re(Trie *tr,string s){
  Trie *cur=tr;
  for(int i=0;i<s.size();++i){
    int c=s[i]-'a';
    cur->child[c]->cnt--;
    cur=cur->child[c];
  }
}
int query(Trie *tr,string s){
  Trie *cur=tr;
  int ans=0;
  for(int i=0;i<s.size();++i){
    int c=s[i]-'a';
    if(cur->child[c]==NULL||cur->child[c]->cnt==0)break;
      ++ans;
  }
  return ans;
}
int f[N],n,a[N];
string s[N];
vector<char>res;
void solve(){
  cin >> n;
  for(int i=1;i<=n;++i){
    cin >> s[i];
    add(&tr,s[i]);
    a[i]=i;
  }
  for(int i=1;i<=n;++i){
    re(&tr,s[i]);
    f[i]=query(&tr,s[i]);
    add(&tr,s[i]);
  }
  sort(a+1,a+1+n,[](int x,int y){return f[x]<f[y]||(f[x]==f[y]&&s[x].size()<s[y].size());});
  for(int i=1;i<=n;++i){
      if(i==1){
      for(char x:s[a[i]])res.emb(x);
        res.emb('P');
    }
    else{
      int j=0;
      while(j<min(s[a[i]].size(),s[a[i-1]].size())&&s[a[i]][j]==s[a[i-1]][j])++j;
      int u=s[a[i-1]].size()-j;
      while(u--)res.emb('-');
      for(;j<s[a[i]].size();++j){
        res.emb(s[a[i]][j]);
      }
      res.emb('P');
      }
  }
    cout <<res.size()<<'\n';
  for(char x:res)cout <<x<<'\n';

  
}
main()
{
  srand(time(0));
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    if(fopen(task".inp","r")){
      freopen(task".inp","r",stdin);
      freopen(task".out","w",stdout);
    }
    int t=1;
 //   cin >> t;
while(t--){
    solve();
    cout<<'\n';
}

}

Compilation message (stderr)

printer.cpp:94:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   94 | main()
      | ^~~~
printer.cpp: In function 'int main()':
printer.cpp:101:14: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  101 |       freopen(task".inp","r",stdin);
      |       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
printer.cpp:102:14: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  102 |       freopen(task".out","w",stdout);
      |       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10