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#include "poszukiwania.h"
#include "message.h"
#include <cstdio>
#include <algorithm>
using std::min;
#define ll long long

int s, n, N, Id;

const int m1 = 1e9 + 9;
const int m2 = 1100000017;
const ll p = 10;

struct Hash {
    ll i1, i2, l;
    Hash(ll x = 0) : i1(x % m1), i2(x % m2), l(x) {}
    Hash(ll i1, ll i2, ll l) : i1(i1 % m1), i2(i2 % m2), l(l) {}
    void operator+=(Hash const& o) {
        i1 = (i1 + o.i1) % m1;
        i2 = (i2 + o.i2) % m2;
        l = (l + o.l);
    }
    void operator-=(Hash const& o) {
        i1 = (i1 - o.i1 + m1) % m1;
        i2 = (i2 - o.i2 + m2) % m2;
        l = (l - o.l);
    }
    void operator*=(int x) {
        i1 = (i1 * x) % m1;
        i2 = (i2 * x) % m2;
        l *= x;
    }
    void operator*=(Hash o) {
        i1 = (i1 * o.i1) % m1;
        i2 = (i2 * o.i2) % m2;
        l *= o.l;
    }
    bool operator==(Hash const& o) const {
        return i1 == o.i1 && i2 == o.i2 && l == o.l;
    }
    void print() {
        printf("%lld %lld %lld\n", i1, i2, l);
    }
};
    Hash operator*(Hash o, ll a) {
        return { (a * o.i1) % m1,
                 (a * o.i2) % m2,
                  a * o.l };
    }

Hash pow(ll b) {
    Hash res(1), a(p);
    while(b) {
        if(b & 1) res *= a;
        a *= a;
        b >>= 1;
    }
    return res;
}
int seq_size;
int beg;
Hash _s, _w;

void search() {
    int sum = 0;
    Hash _pow = pow(s);
    if(_s == _w) sum++;
    for(int i = 1; i <= seq_size; ++i) {
        if(_s == _w) sum++;
//         printf("searching...");
//         _w.print();
        _w *= p;
        _w -= _pow * SeqAt(i + Id * seq_size);
        if(i + Id * seq_size + s <= n)
            _w += SeqAt(i + Id * seq_size + s);
        else break;
    }
    PutInt(0, sum);
    Send(0);
    if(Id)
        exit(0);
}

int main() {
    N = NumberOfNodes();
    Id = MyNodeId();
    s = SignalLength();
    n = SeqLength();
  /*  if(n < 10000) {
        N = 1;
        if(Id) return 0;
    }*/
    Hash tmp;
    if(s > 10000) {
        int s_seq_size = (s + N - 1) / N;
//     printf("%d\n", s_seq_size);
        for(int i = Id * s_seq_size; i < (Id + 1) * s_seq_size; ++i) {
            if(i >= s) break;
            _s *= p;
            _s += (SignalAt(i + 1));
//         _s.print();
        }
        for(int i = 0; i < N; ++i) {
            PutLL(i, _s.i1);
            PutLL(i, _s.i2);
            PutLL(i, _s.l);
            Send(i);
        }
        _s = 0;
        for(int i = 0; i < N; ++i) {
            Receive(i);
            tmp.i1 = GetLL(i);
            tmp.i2 = GetLL(i);
            tmp.l = GetLL(i);
//         tmp.print();
            _s *= pow(min(s_seq_size, s - i * s_seq_size));
            _s += tmp;
        }
//     _s.print();
    } else {
        for(int i = 1; i <= s; ++i) {
            _s *= p;
            _s += SignalAt(i);
        }
    }
    seq_size = (n + N - 1) / N;
    beg = seq_size * Id + 1;
    int rest = s % seq_size, fragments = s / seq_size;
//     printf("s contains %d x %d and %d\n", fragments, seq_size, rest);
    Hash _sum;
    if(s > seq_size) {
        for(int i = 1; i <= seq_size; ++i) {
            if(i + Id * seq_size >= n)
                break;
            _sum *= p;
            _sum += SeqAt(i + Id * seq_size);
            if(i == rest && rest && Id - fragments >= 0 && fragments) {
//                 printf("send %d to %d\n", rest, Id - fragments);
                PutLL(Id - fragments, _sum.i1);
                PutLL(Id - fragments, _sum.i2);
                PutLL(Id - fragments, _sum.l);
                Send(Id - fragments);
            }
//             printf("%d %d\n", fragments, rest);
            if(i == rest && fragments == 0) {
                break;
            }
        }
//         _sum.print();
        _w = _sum;
        if((Id + 1) * seq_size > n) {
            PutInt(0, 0);
            Send(0);
            return 0;
        }

        if(fragments) {
            for(int i = Id - fragments + 1; i < Id; ++i) {
                if(i >= 0) {
//                     printf("*send %d to %d\n", seq_size, i);
                    PutLL(i, _sum.i1);
                    PutLL(i, _sum.i2);
                    PutLL(i, _sum.l);
                    Send(i);
                }
            }
        }
        if(Id * seq_size + s > n) {
            PutInt(0, 0);
            Send(0);
            return 0;
        }
        // count w
        for(int i = 1; i < fragments; i++) {
//             printf("try to get %d from %d by %d\n", seq_size, Id + i, Id);
            Receive(Id + i);
            tmp.i1 = GetLL(Id + i);
            tmp.i2 = GetLL(Id + i);
            tmp.l = GetLL(Id + i);
            _w *= pow(seq_size);
            _w += tmp;
        }
        if(rest) {
//             printf("try to get %d from %d\n", rest, Id + fragments);
            Receive(Id + fragments);
            tmp.i1 = GetLL(Id + fragments);
            tmp.i2 = GetLL(Id + fragments);
            tmp.l = GetLL(Id + fragments);
            _w *= pow(rest);
            _w += tmp;
        }
//         printf("w: ");
//         _w.print();
    } else {
        if(Id * seq_size + s > n) {
            PutInt(0, 0);
            Send(0);
            return 0;
        }
        for(int i = 1; i <= s; ++i) {
            _w *= p;
            _w += SeqAt(i + Id * seq_size);
        }
//         _w.print();
    }
    search();
    long long result = 0;
    for(int i = 0; i < N; ++i) {
        Receive(i);
        result += GetInt(i);
    }
    printf("%lld\n", result);
    return 0;
}