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#include <bits/stdc++.h>
#include "message.h"
#include "poszukiwania.h"


#define REP(i,x) for(uint32 i = 0 ; i < (x) ; i++)

#define DEBUG_MODE
#ifdef DEBUG_MODE
#define print(x) cout << #x << " = " << x << endl
#define debug(x) x
#else
#define print(x)
#define debug(x)
#endif

#define hash_map      unordered_map
#define hash_multimap unordered_multimap
#define hash_set      unordered_set
#define hash_multiset unordered_multiset

using namespace std;

typedef short int int16;
typedef unsigned short int uint16;
typedef int int32;
typedef unsigned int uint32;
typedef unsigned long long int64;
typedef unsigned long long uint64;

typedef pair <int, int> PII;
typedef pair <uint32, uint32> PUU;
typedef pair <uint32, int> PUI;
typedef pair <int, uint32> PIU;
typedef pair <int64, int64> PLL;
typedef pair <int64, int> PLI;
typedef pair <int, int64> PIL;
typedef pair <int, int16> PIS;
typedef pair <int16, int> PSI;


static const PLL base = PUU(11, 37);
static const PUU mod = PUU(0xFFFFFFFB, 0xFFFFFFBF);


uint64 FastPower(uint64 number, uint64 power, uint32 MOD) // to check
{
    uint64 result = 1;
    uint64 value = number;
    
    while( power > 0 )
    {
        if(power & 1)
        {
            result *= value;
            result %= MOD;
        }
        
        value *= value;
        value %= MOD;
        power /= 2;
    }
    
//    uint64 result = 1;
//    
//    for(uint64 i = 0; i < power; ++i)
//    {
//        result *= number;
//        result %= MOD;
//    }
        
    return result;
}

bool operator == (const PLL& a, const PLL& b)
{
    return(a.first == b.first && a.second == b.second);
}

class Application
{
public:
    inline void Run();
private:
    // Methods
    inline void LoadData();
    inline void Solve();
    
    // Fields
    PLL pattern_hash_;
    PLL my_hash_;
    PLL my_bonus_;
    
    uint64 my_id_;
    uint64 instances_number_;
    uint64 result_;
   
};

int main()
{
    ios_base::sync_with_stdio(false);
    Application app;
    app.Run();
}

inline void Application::LoadData()
{
    instances_number_ = NumberOfNodes();
    my_id_ = MyNodeId();
    result_ = 0;
}

inline void Application::Solve()
{
    if(SignalLength() < 1000)
    {
        if(MyNodeId() == 0)
        {
            pattern_hash_ = PLL(SignalAt(1), SignalAt(1));

            for(uint32 i = 1; i < SignalLength(); ++i)
            {
                pattern_hash_.first = (pattern_hash_.first * base.first + SignalAt(i + 1)) % mod.first;
                pattern_hash_.second = (pattern_hash_.second * base.second + SignalAt(i + 1)) % mod.second;
            }

         //   cout << "A" << pattern_hash_.first << " " << pattern_hash_.second << endl;
        }
     }
    else
    {
      
        uint64 pattern_begin = (my_id_ * SignalLength()) / instances_number_;
        uint64 pattern_end = ((my_id_ + 1) * SignalLength()) / instances_number_;
        uint64 size_ = pattern_end - pattern_begin;
        
        
        
        pattern_hash_ = PLL(SignalAt(pattern_begin + 1), SignalAt(pattern_begin + 1));
        for(uint64 i = pattern_begin + 1; i < pattern_end; ++i)
        {
            pattern_hash_.first = (pattern_hash_.first * base.first + SignalAt(i + 1)) % mod.first;
            pattern_hash_.second = (pattern_hash_.second * base.second + SignalAt(i + 1)) % mod.second;
        }
        
        pattern_hash_.first = (pattern_hash_.first * FastPower(base.first, SignalLength() - pattern_end , mod.first)) % mod.first;
        pattern_hash_.second = (pattern_hash_.second * FastPower(base.second, SignalLength() - pattern_end, mod.second)) % mod.second;
        
                
        
        if(my_id_ != 0)
        {
            PutLL(0, (long long) pattern_hash_.first);
            PutLL(0, (long long) pattern_hash_.second);
            Send(0);
        }
        else
        {
            for(uint32 i = 1; i < instances_number_; ++i)
            {
                Receive(i);
                pattern_hash_.first = (pattern_hash_.first + GetLL(i)) % mod.first;
                pattern_hash_.second = (pattern_hash_.second + GetLL(i)) % mod.second;
            }
            
            for(uint32 i = 1; i < instances_number_; ++i)
            {
                PutLL(i, (long long) pattern_hash_.first);
                PutLL(i, (long long) pattern_hash_.second);
                Send(i);
            }
        }
        
        if(my_id_ != 0)
        {
            Receive(0);
            pattern_hash_.first = GetLL(0);
            pattern_hash_.second = GetLL(0);
        }
        else
        {
           
            print(pattern_hash_.first);
            print(pattern_hash_.second);
        }
    }
    
    
    //if(SeqLength() < 1000)
    {
        if(MyNodeId() == 0)
        {   
            vector <PLL> hashes (SeqLength());
            hashes[0] = PLL(SeqAt(1), SeqAt(1));
            
            for(uint32 i = 1; i < SeqLength(); ++i)
            {
                hashes[i].first = (hashes[i - 1].first * base.first + SeqAt(i + 1)) % mod.first;
                hashes[i].second = (hashes[i - 1].second * base.second + SeqAt(i + 1))% mod.second;
            }
            
            uint32 begin = 1; 
            uint32 end = SignalLength();
            
            if(hashes[SignalLength() - 1] == pattern_hash_)
                ++ result_;
            
            PLL pow = PLL(FastPower(base.first, SignalLength(), mod.first), FastPower(base.second, SignalLength(), mod.second));
            
            while(end <  SeqLength())
            {
                PUU th;
                th.first = (mod.first + hashes[end].first - ( ( hashes[begin - 1].first * pow.first ) % mod.first) ) % mod.first;
                th.second = (mod.second + hashes[end].second - ((hashes[begin - 1].second * pow.second) % mod.second) ) % mod.second;
                
                if(th == pattern_hash_)
                {
                   // print(begin); 
                    ++ result_;
                }
                ++ begin;
                ++ end;
            }
            
            cout << result_ << "\n";
        }
    }
  
    
}

inline void Application::Run()
{
    LoadData();
    Solve();
}