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Cod sursa(job #629536)
#include<stdio.h>
#include<string.h>
#define p 666013
char a[2000001],b[2000001];
const int B=67;
int pow[2000001];
int la,nrSol,lb;
FILE *fin,*fout;
int v[1001];
void citire()
{
fin=fopen("strmatch.in","r");
fscanf(fin,"%s\n%s",a,b);
}
void initializare(int n)
{
pow[0]=1;
for(int i=1;i<=n;i++)
{
pow[i]=pow[i-1]*B;
pow[i]=pow[i]%p;
}
}
int transformare(char s[])
{
int nr=0;
for(int i=0;i<=strlen(s);i++)
{
if('a'<=s[i] && s[i]<='z')
{
nr+=(((s[i]-'a')%p)*pow[i])%p;
}
else
if('0'<=s[i] && s[i]<='9')
{
nr+=(((s[i]-'0'+27)%p)*pow[i])%p;
}
else
if('A'<=s[i] && s[i]<='Z')
{
nr+=(((s[i]-'A'+37)%p)*pow[i])%p;
}
nr=nr%p;
}
return nr;
}
void solutie(int poz)
{
nrSol++;
if(nrSol<=1000)
v[nrSol]=poz;
}
void verifica( char s[] , char ss[] , int poz )
{
if(strlen(s)!=strlen(ss))
{
return;
}
for(int i=0;i<=strlen(s)-1;i++)
{
if(s[i]!=ss[i])
{
return;
}
}
solutie(poz);
}
void afisare()
{
fout=fopen("strmatch.out","w");
fprintf(fout,"%d\n",nrSol);
for(int i=1;i<=nrSol;i++)
{
fprintf(fout,"%d ",v[i]);
}
}
int main()
{
citire();
la=strlen(a);
lb=strlen(b);
initializare(la);
int nra=transformare(a);
printf("%d \n",nra);
int x;
char c[2000001];
strncpy(c,b,la);
int nrb=transformare(c);
if(nra>nrb)
afisare();
for(int i=1;i<=lb-la+1;i++)
{
printf("%d ",nrb);
if(nrb==nra)
{
verifica(a,c,i);
}
if('a'<=b[i-1] && b[i-1]<='z')
{
x=(((b[i-1]-'a')%p)*pow[la])%p;
}
else
if('0'<=b[i-1] && b[i-1]<='9')
{
x=(((b[i-1]-'0'+27)%p)*B*pow[la])%p;
}
else
if('A'<=b[i-1] && b[i-1]<='Z')
{
x=(((b[i-1]-'A'+37)%p)*pow[la])%p;
}
x=x%p;
nrb+=p;
nrb-=x;
nrb=(nrb*B)%p;
nrb+=a[i+la];
}
afisare();
return 0;
}