제출 #1176395

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1176395		youssefproof	Type Printer (IOI08_printer)	C++20	0 / 100	34 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;
    ll siz = 0;
};
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].siz = max(tri[curr].siz,(ll)s.size());
    }
    tri[curr].endofword = true;
}
vector<char>ans;
void dfs(ll node) {
    if (tri[node].endofword) ans.push_back('P');
    vector<pair<ll,ll>>temp;
    for (int  i = 0; i < 26; i++)
    {
        if(tri[node].nxt[i]) {
            temp.push_back({tri[tri[node].nxt[i]].siz,i});
        }
    }
    sort(temp.begin(),temp.end());
    for (auto [j,i] : temp) {
            ans.push_back(i + 'a');
                dfs(tri[node].nxt[i]);
            ans.push_back('-');
    }
}
void solve()
{
    ll n;cin >> n;
    while (n--) {
        string s;cin >> s;
        Insert(s);
    }
    dfs(0);
    while(ans.back() == '-') ans.pop_back();
    cout << ans.size() << '\n';
    for (auto &i : ans) {
        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();
}

컴파일 시 표준 에러 (stderr) 메시지

printer.cpp: In function 'int main()':
printer.cpp:66:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |     freopen("C:/Users/youss/OneDrive/Desktop/IO/input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
printer.cpp:67:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   67 |     freopen("C:/Users/youss/OneDrive/Desktop/IO/output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
printer.cpp:68:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   68 |     freopen("C:/Users/youss/OneDrive/Desktop/IO/error.txt", "w", stderr);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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