Submission #1176389

#	Time	Username	Problem	Language	Result	Execution time	Memory
1176389		youssefproof	Type Printer (IOI08_printer)	C++20	0 / 100	46 ms	328 KiB

printer

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ll long long
#define proof ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define tests ll T;cin >> T;while(T--)
using namespace std;
using namespace __gnu_pbds;
#define ordered_set tree< int ,  null_type ,  less<int> ,  rb_tree_tag ,  tree_order_statistics_node_update>
const ll mod = 1e9 + 7;
struct Node{
    ll cntr;
    ll nxt[26];
    bool endofword = false;
};
vector<Node>tri(1);
void Insert(string &s) {
    ll curr = 0;
    for (int i = 0;i < s.size();i++) {
        if (!tri[curr].nxt[s[i]-'a']) {
            tri[curr].nxt[s[i] - 'a'] = tri.size();
            tri.emplace_back();
        }
        curr = tri[curr].nxt[s[i]-'a'];
        tri[curr].cntr++;
    }
    tri[curr].endofword = true;
}
vector<char>ans;
void dfs(ll node,ll start = 0) {
    if (tri[node].endofword) ans.push_back('P');
    ll cntr = 0;
    for (int i = 0;i < 26;i++) {
        if (tri[node].nxt[i]) cntr++;
    }
    for (int i = 0;i < 26;i++) {
        if (tri[node].nxt[(i + start) % 26]) {
            ans.push_back(((i + start) % 26) + 'a');
            if (cntr==1)
            dfs(tri[node].nxt[(i + start) % 26],start);
            else {
                dfs(tri[node].nxt[(i + start) % 26]);
            }
            ans.push_back('-');
        }
    }
}
void solve()
{
    ll n;cin >> n;
    while (n--) {
        string s;cin >> s;
        Insert(s);
    }
    vector<char>anss;
    ll mini = LLONG_MAX;
    for (int i = 0;i < 26;i++) {
        dfs(0,i);
        while (ans.back() == '-') ans.pop_back();
        if (ans.size() < mini) {
            mini = ans.size();
            anss = ans;
        }
        ans.clear();
    }
    cout << anss.size() << '\n';
    for (auto &i : anss) {
        cout << i << '\n';
    }
}
int main()
{
    proof;
    #ifndef ONLINE_JUDGE
    freopen("C:/Users/youss/OneDrive/Desktop/IO/input.txt", "r", stdin);
    freopen("C:/Users/youss/OneDrive/Desktop/IO/output.txt", "w", stdout);
    freopen("C:/Users/youss/OneDrive/Desktop/IO/error.txt", "w", stderr);
    #endif
    //tests
        solve();
}

Compilation message (stderr)

printer.cpp: In function 'int main()':
printer.cpp:75:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |     freopen("C:/Users/youss/OneDrive/Desktop/IO/input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
printer.cpp:76:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |     freopen("C:/Users/youss/OneDrive/Desktop/IO/output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
printer.cpp:77:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |     freopen("C:/Users/youss/OneDrive/Desktop/IO/error.txt", "w", stderr);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• 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