Submission #476913

#	Time	Username	Problem	Language	Result	Execution time	Memory
476913		robell	Type Printer (IOI08_printer)	C++14	0 / 100	1090 ms	17464 KiB

printer

#pragma GCC optimize("O2")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag, tree_order_statistics_node_update> indexed_set;
typedef long long ll;
#define pb push_back
#define eb emplace_back
#define countbits __builtin_popcount
#define beg0 __builtin_clz
#define terminal0 __builtin_ctz
#define mod 1e9+7
void setIO(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
}
void setIO(string f){
	freopen((f+".in").c_str(),"r",stdin);
	freopen((f+".out").c_str(),"w",stdout);
	setIO();
}
int N;
map<string,vector<string>> e;
map<string,bool> m;
string w[(int)25e2];
int edges = 0;
vector<char> ops;
void dfs(string s){
	edges++;
	if (!m[s]){
		ops.pb(s[0]);
		for (string c:e[s]){
			dfs(c);
		}
		ops.pb('-');
	}else{
		ops.pb(s[0]);
		for (string c:e[s]){
			if (!m[c]){
				dfs(c);
			}
		}
		for (string c:e[s]){
			if (m[c]){
				dfs(c);
			}
		}
	}
}
int main(){
	setIO();
	cin >> N;
	int maxl = 0,pos=-1, bp = -1;
	for (int i=0;i<N;i++){
		cin >> w[i];
		if (w[i].length()>maxl){maxl=w[i].length();pos=i;bp=w[i][0]-'a';}
	}
	for (int i=0;i<N;i++){
		for (int j=0;j<w[i].size()-1;j++){
			e[w[i].substr(j,1)+to_string(j)].pb(w[i].substr(j+1,1)+to_string(j+1));
			if (i==pos){
				m[w[i].substr(j,1)+to_string(j)]=true;
				m[w[i].substr(j+1,1)+to_string(j+1)]=true;
			}
		}
	}
	string alpha = "abcdefghijklmnopqrstuvwxyz";
	swap(alpha[bp],alpha[25]);
	for (int i=0;i<alpha.size();i++){
		if (e[alpha.substr(i,1)+"0"].size()==0) continue;
		dfs(alpha.substr(i,1)+"0");
	}
	edges*=2;
	edges-=maxl;
	cout << ++edges<< "\n";
	for (char c:ops){
		cout << c << "\n";
	}
}

Compilation message (stderr)

printer.cpp: In function 'int main()':
printer.cpp:57:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   57 |   if (w[i].length()>maxl){maxl=w[i].length();pos=i;bp=w[i][0]-'a';}
      |       ~~~~~~~~~~~~~^~~~~
printer.cpp:60:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |   for (int j=0;j<w[i].size()-1;j++){
      |                ~^~~~~~~~~~~~~~
printer.cpp:70:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |  for (int i=0;i<alpha.size();i++){
      |               ~^~~~~~~~~~~~~
printer.cpp: In function 'void setIO(std::string)':
printer.cpp:19:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |  freopen((f+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
printer.cpp:20:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |  freopen((f+".out").c_str(),"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