Cod sursa(job #1627218)

Utilizator Andrei1998Andrei Constantinescu Andrei1998 Data 3 martie 2016 15:26:27
Problema Pioni Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 2.25 kb
#include <fstream>
#include <vector>
#include <utility>

using namespace std;

class InputReader {
    public:
        InputReader() {}
        InputReader(const char *file_name) {
            input_file = fopen(file_name, "r");
            cursor = 0;
            fread(buffer, SIZE, 1, input_file);
        }
        inline InputReader &operator >>(int &n) {
            while(buffer[cursor] < '0' || buffer[cursor] > '9') {
                advance();
            }
            n = 0;
            while('0' <= buffer[cursor] && buffer[cursor] <= '9') {
                n = n * 10 + buffer[cursor] - '0';
                advance();
            }
            return *this;
        }
    private:
        FILE *input_file;
        static const int SIZE = 1 << 17;
        int cursor;
        char buffer[SIZE];
        inline void advance() {
            ++ cursor;
            if(cursor == SIZE) {
                cursor = 0;
                fread(buffer, SIZE, 1, input_file);
            }
        }
};

const int NMAX = 20005;
vector <int> graph[NMAX];

int _move[NMAX];
bool done[NMAX];

void dfs(int node) {
    if (done[node])
        return ;
    done[node] = true;

    for (auto it: graph[node]) {
        dfs(it);
        if (!_move[it])
            _move[node] = it;
    }
}

int main()
{
    InputReader cin("pioni.in");
    ofstream cout("pioni.out");

    int t = 0, n = 0, m = 0;
    cin >> t >> n >> m;

    int a, b;
    while (m --) {
        cin >> a >> b;
        graph[a].push_back(b);
    }

    for (int i = 1; i <= n; ++ i)
        dfs(i);

    vector <pair <int, int> > sol;
    sol.reserve(2 * NMAX);

    while (t --) {
        sol.clear();

        int k = 0;
        cin >> k;

        int node;
        while (k --) {
            cin >> node;
            if (_move[node])
                sol.push_back(make_pair(node, _move[node]));
        }

        if (sol.empty())
            cout << "Fumeanu\n";
        else {
            cout << "Nargy\n";
            cout << sol.size();

            for (auto it: sol)
                cout << ' ' << it.first << ' ' << it.second;
            cout << '\n';
        }
    }

    //cin.close();
    cout.close();
    return 0;
}