Cod sursa(job #2909055)

Utilizator rares89_Dumitriu Rares rares89_ Data 8 iunie 2022 15:25:45
Problema Andrei Scor 100
Compilator cpp-32 Status done
Runda Arhiva de probleme Marime 3.92 kb
#include <bits/stdc++.h>

using namespace std;

class InParser {
private:
    FILE *fin;
    char *buff;
    int sp;

    char read_ch() {
        ++sp;
        if (sp == 4096) {
            sp = 0;
            fread(buff, 1, 4096, fin);
        }
        return buff[sp];
    }

public:
    InParser(const char* nume) {
        fin = fopen(nume, "r");
        buff = new char[4096]();
        sp = 4095;
    }

    InParser& operator >> (int &n) {
        char c;
        while (!isdigit(c = read_ch()) && c != '-');
        int sgn = 1;
        if (c == '-') {
            n = 0;
            sgn = -1;
        } else {
            n = c - '0';
        }
        while (isdigit(c = read_ch())) {
            n = 10 * n + c - '0';
        }
        n *= sgn;
        return *this;
    }

    InParser& operator >> (long long &n) {
        char c;
        n = 0;
        while (!isdigit(c = read_ch()) && c != '-');
        long long sgn = 1;
        if (c == '-') {
            n = 0;
            sgn = -1;
        } else {
            n = c - '0';
        }
        while (isdigit(c = read_ch())) {
            n = 10 * n + c - '0';
        }
        n *= sgn;
        return *this;
    }
};

class OutParser {
private:
    FILE *fout;
    char *buff;
    int sp;

    void write_ch(char ch) {
        if (sp == 50000) {
            fwrite(buff, 1, 50000, fout);
            sp = 0;
            buff[sp++] = ch;
        } else {
            buff[sp++] = ch;
        }
    }


public:
    OutParser(const char* name) {
        fout = fopen(name, "w");
        buff = new char[50000]();
        sp = 0;
    }
    ~OutParser() {
        fwrite(buff, 1, sp, fout);
        fclose(fout);
    }

    OutParser& operator << (int vu32) {
        if (vu32 <= 9) {
            write_ch(vu32 + '0');
        } else {
            (*this) << (vu32 / 10);
            write_ch(vu32 % 10 + '0');
        }
        return *this;
    }

    OutParser& operator << (long long vu64) {
        if (vu64 <= 9) {
            write_ch(vu64 + '0');
        } else {
            (*this) << (vu64 / 10);
            write_ch(vu64 % 10 + '0');
        }
        return *this;
    }

    OutParser& operator << (char ch) {
        write_ch(ch);
        return *this;
    }
    OutParser& operator << (const char *ch) {
        while (*ch) {
            write_ch(*ch);
            ++ch;
        }
        return *this;
    }
};

InParser fin("andrei.in");
OutParser fout("andrei.out");

int cnt, ctc[200005], st[200005], nr;
vector<int> G[200005], GT[200005];
bitset<200005> v;

void adaugare(int a, int b) {
    G[a].push_back(b);
    GT[b].push_back(a);
}

void dfs(int nod) {
    v[nod] = true;
    for(auto i : G[nod]) {
        if(!v[i]) {
            dfs(i);
        }
    }
    st[++nr] = nod;
}

void dfsT(int nod) {
    v[nod] = true;
    ctc[nod] = cnt;
    for(auto i : GT[nod]) {
        if(!v[i]) {
            dfsT(i);
        }
    }
}

int main() {
    ios_base::sync_with_stdio(false);
    int n, m, x, y, z;
    fin >> n >> m;
    for(int i = 1; i <= m; i++) {
        fin >> x >> y >> z;
        if(z == 0) {
            adaugare(x, y + n);
            adaugare(y, x + n);
        }
        if(z == 1) {
            adaugare(x + n, y);
            adaugare(y + n, x);
        }
        if(z == 2) {
            adaugare(x, y);
            adaugare(y, x);
            adaugare(x + n, y + n);
            adaugare(y + n, x + n);
        }
    }
    for(int i = 1; i <= 2 * n; i++) {
        if(!v[i]) {
            dfs(i);
        }
    }
    for(int i = 1; i <= 2 * n; i++) {
        v[i] = false;
    }
    for(int i = 2 * n; i >= 1; i--) {
        if(!v[st[i]]) {
            cnt++;
            dfsT(st[i]);
        }
    }
    for(int i = 1; i <= n; i++) {
        fout << (ctc[i] < ctc[i + n]) << " ";
    }
    return 0;
}