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Cod sursa(job #101282)
#include <iostream>
#include <fstream>
#include <cstdio>
#include <cstdlib>
using namespace std;
int const MaxT = 10000000;
int const MaxD = 50000;
int const MaxC = 20;
static char Text [1+MaxT];
static char Cuvant [1+MaxC];
class Copac {
public:
Copac() { p[0] = 0; p [1] = 0; p[2] = 0;}
~Copac() {
if (p [0]) delete p [0];
if (p [1]) delete p [1];
if (p [2]) delete p [2];
}
void Adauga(char * cuvant) {
Copac ** x = p;
Copac * y;
while (4 != (*cuvant)) {
y = x[(*cuvant)];
if(0 == y) {
y = new Copac;
x[(*cuvant)] = y;
}
x = y->p;
++ cuvant;
}
}
bool Cauta(char * cuvant) {
Copac ** x = p;
Copac * y;
while (4 != (*cuvant)) {
y = x[(*cuvant)];
if(0 == y) return false;
x = y->p;
++ cuvant;
}
return true;
}
private:
Copac * p [3];
};
int main2x () {
int i, n, m, cont;
FILE * fin = fopen("abc2.in", "r");
i = 0;
fgets(Text, 1+MaxT, fin);
n=(int)strlen(Text);
for(i=0;i<n;i++) Text[i]-='a';
n = i;
Copac cop;
i = 0;
Cuvant[0]='\0';
fgets(Cuvant, 1+MaxC, fin);
m=(int)strlen(Cuvant);
if(0<m) {
for(i=0;i<m;i++) Cuvant[i]-='a';
Cuvant[m]=4;
cop.Adauga(Cuvant);
}
while(true) {
Cuvant[0]='\0';
fgets(Cuvant, 1+MaxC, fin);
if('\0' == Cuvant[0]) break;
for(i=0;i<m;i++) Cuvant[i]-='a';
Cuvant[m]=4;
cop.Adauga(Cuvant);
}
cont = 0;
if(0 != m) {
for(i = n-m; i >= 0; i --) {
Text[i+m] = 4;
if(cop.Cauta(&Text[i])) ++ cont;
}
}
FILE * fout = fopen("abc2.out", "w");
fprintf(fout, "%d\n", cont);
return 0;
}