Submission #1008007

#	Time	Username	Problem	Language	Result	Execution time	Memory
1008007		The_Samurai	Type Printer (IOI08_printer)	C++17	80 / 100	28 ms	31580 KiB

printer

// I stand with PALESTINE



//#pragma GCC optimize("Ofast")
//#pragma GCC optimize ("unroll-loops")
//#pragma GCC target("avx,avx2")

#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
//using namespace __gnu_pbds;

// #define int long long
#define ff first
#define ss second
#define sz(a) (int) (a).size()
//template<class T, class C = null_type> using ordered_tree = tree<T, C, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long double ld;

namespace io {

    template<typename F, typename S>
    ostream &operator<<(ostream &os, const pair<F, S> &p) { return os << p.ff << " " << p.ss; }

    template<typename F, typename S>
    ostream &operator<<(ostream &os, const map<F, S> &mp) {
        for (auto it: mp) { os << it << endl; }
        return os;
    }

    template<typename F>
    ostream &operator<<(ostream &os, const vector<F> &v) {
        bool space = false;
        for (F x: v) {
            if (space) os << " ";
            space = true;
            os << x;
        }
        return os;
    }

    template<typename F>
    ostream &operator<<(ostream &os, const deque<F> &d) {
        bool space = false;
        for (F x: d) {
            if (space) os << " ";
            space = true;
            os << x;
        }
        return os;
    }

    template<typename F>
    ostream &operator<<(ostream &os, const set<F> &st) {
        bool space = false;
        for (F x: st) {
            if (space) os << " ";
            space = true;
            os << x;
        }
        return os;
    }

    template<typename F>
    ostream &operator<<(ostream &os, const multiset<F> &st) {
        bool space = false;
        for (F x: st) {
            if (space) os << " ";
            space = true;
            os << x << x;
        }
        return os;
    }

    template<typename F, typename S>
    istream &operator>>(istream &is, pair<F, S> &p) { return is >> p.ff >> p.ss; }

    template<typename F>
    istream &operator>>(istream &is, vector<F> &v) {
        for (F &x: v) { is >> x; }
        return is;
    }

    long long fastread() {
        char c;
        long long d = 1, x = 0;
        do c = getchar(); while (c == ' ' || c == '\n');
        if (c == '-') c = getchar(), d = -1;
        while (isdigit(c)) {
            x = x * 10 + c - '0';
            c = getchar();
        }
        return d * x;
    }

    static bool sep = false;

    using std::to_string;

    string to_string(bool x) {
        return (x ? "true" : "false");
    }

    string to_string(const string &s) { return "\"" + s + "\""; }

    string to_string(const char *s) { return "\"" + string(s) + "\""; }

    string to_string(const char &c) {
        string s;
        s += c;
        return "\'" + s + "\'";
    }

    template<typename Type>
    string to_string(vector<Type>);

    template<typename F, typename S>
    string to_string(pair<F, S>);

    template<typename Collection>
    string to_string(Collection);

    template<typename F, typename S>
    string to_string(pair<F, S> p) { return "{" + to_string(p.ff) + ", " + to_string(p.ss) + "}"; }

    template<typename Type>
    string to_string(vector<Type> v) {
        bool sep = false;
        string s = "[";
        for (Type x: v) {
            if (sep) s += ", ";
            sep = true;
            s += to_string(x);
        }
        s += "]";
        return s;
    }

    template<typename Collection>
    string to_string(Collection collection) {
        bool sep = false;
        string s = "{";
        for (auto x: collection) {
            if (sep) s += ", ";
            sep = true;
            s += to_string(x);
        }
        s += "}";
        return s;
    }

    void print() {
        cout << endl;
        sep = false;
    }

    template<typename F, typename... Other>
    void print(F ff, Other... other) {
        if (sep) cout << " | ";
        sep = true;
        cout << to_string(ff);
        print(other...);
    }

}
using namespace io;

namespace utils {

    template<typename F, typename S>
    inline void maxs(F &a, S b) { a = a > b ? a : b; }

    template<typename F, typename S>
    inline void mins(F &a, S b) { a = a < b ? a : b; }

    template<typename F, typename S>
    long long max(F a, S b) { return a > b ? a : b; }

    template<typename F, typename S>
    long long min(F a, S b) { return a < b ? a : b; }

    constexpr long long operator "" _E(unsigned long long n) {
        long long p = 1, a = 10;
        for (int i = 0; i < n; i++) p *= a;
        return p;
    }

    random_device rd;
    mt19937 mt(rd());

    template<typename T>
    T rand(T l, T r) {
        uniform_int_distribution<T> dist(l, r);
        return dist(mt);
    };

}
using namespace utils;


#ifdef sunnatov
#define print(...) cout << "[" << #__VA_ARGS__ << "]: "; io::print( __VA_ARGS__ );
#else
#define print( ... ) 42
#endif

const int mod = 9_E + 7;
const double EPS = 1e-7;
long long doxuya = 18_E + 10;
int INF = 9_E + 10;
const char nl = '\n';

int month[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

/*

*/

const int N = 1e5;

vector<vector<int>> out(N, vector(26, 0));
vector<int> par(N, -1), cnt(N), mx(N);
vector<bool> ex(N);
int z;

void add(const string &s) {
    int x = 0;
    cnt[0]++;
    for (int i = 0; i < s.size(); i++) {
        if (!out[x][s[i] - 'a']) {
            out[x][s[i] - 'a'] = ++z;
            par[z] = x;
        }
        x = out[x][s[i] - 'a'];
        cnt[x]++;
        mx[x] = max(mx[x], sz(s));
    }
    ex[x] = true;
}

void remove(const string &s) {
    int x = 0;
    cnt[0]--;
    for (int i = 0; i < s.size(); i++) {
        x = out[x][s[i] - 'a'];
        cnt[x]--;
    }
    ex[x] = false;
}

void solution(istream &cin, ostream &cout, const int &test_case) {
    int n;
    cin >> n;
    vector<string> s(n);
    cin >> s;
    for (int i = 0; i < n; i++) add(s[i]);
    int x = 0;
    vector<char> ans;
    string way = "";
    while (x != -1) {
        if (!cnt[x]) {
            x = par[x];
            ans.emplace_back('-');
            way.pop_back();
            continue;
        }
        if (ex[x]) {
            ans.emplace_back('P');
            remove(way);
            continue;
        }
        int best = -1;
        for (int i = 0; i < 26; i++) {
            if (!out[x][i] or !cnt[out[x][i]]) continue;
            if (best == -1 or mx[out[x][i]] < mx[out[x][best]]) best = i;
        }
        x = out[x][best];
        ans.emplace_back(best + 'a');
        way += best + 'a';
    }
    while (!ans.empty() and ans.back() == '-') ans.pop_back();
    cout << sz(ans) << nl;
    for (char x: ans) cout << x << nl;
}

int32_t main() {
    clock_t startTime = clock();
    cin.tie(0)->sync_with_stdio(false);
    srand(time(0));

    std::istream &in(std::cin);
    std::ostream &out(std::cout);

    int32_t queries = 1;

#ifdef test_cases
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    cin >> queries;
#else
    // cin >> queries;
#endif

    for (int32_t test_case = 1; test_case <= queries; test_case++) {
        print(test_case);
        solution(cin, cout, test_case);
        // cout << nl;
    }

#ifdef sunnatov
    cout << "Time: " << (int) ((double) (clock() - startTime) / CLOCKS_PER_SEC * 1000) << " ms" << endl;
#endif

    return EXIT_SUCCESS;
}

Compilation message (stderr)

printer.cpp: In function 'constexpr long long int utils::operator""_E(long long unsigned int)':
printer.cpp:186:27: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare]
  186 |         for (int i = 0; i < n; i++) p *= a;
      |                         ~~^~~
printer.cpp: In function 'void add(const string&)':
printer.cpp:231:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  231 |     for (int i = 0; i < s.size(); i++) {
      |                     ~~^~~~~~~~~~
printer.cpp: In function 'void remove(const string&)':
printer.cpp:246:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  246 |     for (int i = 0; i < s.size(); i++) {
      |                     ~~^~~~~~~~~~
printer.cpp: In function 'int32_t main()':
printer.cpp:206:22: warning: statement has no effect [-Wunused-value]
  206 | #define print( ... ) 42
      |                      ^~
printer.cpp:307:9: note: in expansion of macro 'print'
  307 |         print(test_case);
      |         ^~~~~
printer.cpp:289:13: warning: unused variable 'startTime' [-Wunused-variable]
  289 |     clock_t startTime = clock();
      |             ^~~~~~~~~
printer.cpp:293:19: warning: unused variable 'in' [-Wunused-variable]
  293 |     std::istream &in(std::cin);
      |                   ^~
printer.cpp:294:19: warning: unused variable 'out' [-Wunused-variable]
  294 |     std::ostream &out(std::cout);
      |                   ^~~

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