Cod sursa(job #1024770)

Utilizator a_h1926Heidelbacher Andrei a_h1926 Data 9 noiembrie 2013 00:42:57
Problema Dtcsu Scor Ascuns
Compilator cpp Status done
Runda Marime 2.91 kb
#include <cstdio>
#include <cassert>

using namespace std;

typedef long long int64;

const char IN_FILE[] = "dtcsu.in";
const char OUT_FILE[] = "dtcsu.out";
const int64 oo = int64(1e18);
const int K = 276997;

class Reader {
  public:
    Reader(FILE *stream, const int size = (1 << 16)):
            size(size),
            pointer(0),
            stream(stream) {
        buffer = new char[size];
        assert(fread(buffer, 1, size, this->stream) != 0);
    }

    template<class IntType>
    IntType NextInt() {
        IntType value = 0;
        bool negative = false;
        while ((Current() < '0' || Current() > '9') && Current() != '-')
            NextPosition();
        if (Current() == '-') {
            negative = true;
            NextPosition();
        }
        while(Current() >= '0' && Current() <= '9') {
            value = value * 10 + Current() - '0';
            NextPosition();
        }
        if (negative)
            value = -value;
        return value;
    }

    Reader &operator>>(short &value) {
        value = NextInt<short>();
        return *this;
    }

    Reader &operator>>(int &value) {
        value = NextInt<int>();
        return *this;
    }

    Reader &operator>>(long long &value) {
        value = NextInt<long long>();
        return *this;
    }

  private:
    int size;
    int pointer;
    char *buffer;
    FILE *stream;

    char Current() const {
        return buffer[pointer];
    }

    void NextPosition() {
        if(++pointer == size) {
            assert(fread(buffer, 1, size, stream) != 0);
            pointer = 0;
        }
    }
};

int64 Powers[4][40];
int MaxPower[4];

void Preprocess() {
    int factors[4] = {3, 5, 7, 11};
    for (int i = 0; i < 4; ++i) {
        Powers[i][0] = 1;
        MaxPower[i] = 0;
        while (Powers[i][MaxPower[i]] * factors[i] <= oo) {
            Powers[i][MaxPower[i] + 1] = Powers[i][MaxPower[i]] * factors[i];
            ++MaxPower[i];
        }
    }
}

inline int GetPower(const int f, const int64 value) {
    int left = 1, right = MaxPower[f], power = 0;
    while (left <= right) {
        int middle = (left + right) >> 1;
        if (value % Powers[f][middle] == 0) {
            left = middle + 1;
            power = middle;
        } else {
            right = middle - 1;
        }
    }
    return power;
}

int main() {
    assert(freopen(IN_FILE, "r", stdin));
    assert(freopen(OUT_FILE, "w", stdout));
    Preprocess();
    Reader in = Reader(stdin);
    for (int i = 0; i < K; ++i) {
        int64 waste;
        in >> waste;
    }
    int tests, count = 0;
    in >> tests;
    for (; tests > 0; --tests) {
        int64 value;
        in >> value;
        for (int i = 0; i < 4; ++i)
            value /= Powers[i][GetPower(i, value)];
        if ((value & (value - 1)) == 0)
            ++count;
    }
    printf("%d\n", count);
    return 0;
}