Cod sursa(job #98335)

Utilizator GiggityGlen Quagmire Giggity Data 10 noiembrie 2007 12:39:14
Problema Abc2 Scor 0
Compilator cpp Status done
Runda Happy Coding 2007 Marime 1.16 kb
#include<stdio.h>
#include<string.h>
#include<vector>
#include<algorithm>

using namespace std;

#define NMAX 10000010
#define Q 101869

void read();
int find(long long x);
void add(long long x);

char S[NMAX];
vector<long long> H[Q];
int M, N, la;

int main()
{
	freopen("abc2.in", "r", stdin);
	freopen("abc2.out", "w", stdout);

	read();
	return 0;
}

void read()
{
	char A[32];
	long long ok;
	int i, j;

	M = -1;
	fgets(S, NMAX, stdin);
	S[strlen(S) - 1] = 0;

	for(;!feof(stdin);)
	{
		scanf("%s ", A);
		if(M == -1) M = strlen(A);

		ok = 0;
		for(i = 0; i < M; i++)
		ok = ok * 3 + A[i] - 'a';

		add(ok);
	}

	N = strlen(S);

	int rez = 0;

	la = 1;
	ok = 0;
	if(M <= N)
	for(i = 0; i < M; i++)
	{
		la = la * 3;
		ok = ok * 3 + S[i] - 'a';
	}

	la /= 3;

	for(i = 0; i + M <= N; i++)
	{	
		if(find(ok))
			rez++;
		ok -= la * (S[i] - 'a');
		ok *= 3;
		if(i + M < N)
		ok += S[i + M] - 'a';
	}
	printf("%d\n", rez);
}

void add(long long x)
{
	H[x % Q].push_back(x);
}

int find(long long x)
{
	int i;

	for(i = 0; i < H[x % Q].size(); i++)
		if(H[x % Q][i] == x)
			return 1;
	return 0;
}