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Cod sursa(job #534229)
#include<stdio.h>
#include<string.h>
#include<math.h>
#include<algorithm>
FILE*f=fopen("abc2.in","r");
FILE*g=fopen("abc2.out","w");
using namespace std;
long long w[50001];
char v[10000001],a[50001][20];
int N;
int cautbin(long long val){
int i, step;
for (step = 1; step <= N; step <<= 1);
for (i = 1; step; step >>= 1)
if (i + step <= N && w[i + step] <= val)
i += step;
return w[i] == val ;
}
int main(){
int i=1;
fscanf(f,"%s",&v);
int x1=strlen(v);
fscanf(f,"%s",&a[i]);
while(a[i][0])
fscanf(f,"%s",&a[++i]);
int x=strlen(a[1]);
i--;
N=i;
for(int j=1;j<=i;++j){
long long z=0;
long long t=1;
for(int k=0;k<x;++k){
z+=(a[j][k]-'a')*t;
t*=3;
}
w[j]=z;
}
sort(w+1,w+i+1);
long long z=0;
long long t=1;
for(int j=0;j<x;++j){
z+=(v[j]-'a')*t;
t*=3;
}
int nr=0;
if(cautbin(z))
nr++;
int d=pow(3,x-1);
for(register int j=x;j<x1;++j){
z=z-(v[j-x]-'a');
z/=3;
z+=(v[j]-'a')*d;
N=i;
if(cautbin(z))
nr++;
}
fprintf(g,"%d",nr);
fclose(g);
fclose(f);
return 0;
}