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Cod sursa(job #465979)
#include<stdio.h>
int n=1,fol[101],v[101], k, u[101], q, nr, j;
void perm(int poz){
int i, a=1;
if(poz==n+1){
for(i=1; i<=n; i++){
if(i>1){
a=a*10;
}
nr+=u[v[i]]*a;
}
if(nr%k==0){
q++;
}
a=1;
nr=0;
}
else{
for(i=1;i<=n;i++){
if(fol[i]==0){
v[poz]=i;
fol[i]=1;
perm(poz+1);
fol[i]=0;
}
}
}
}
int main(){
freopen("ratphu.in","r",stdin);
freopen("ratphu.out","w",stdout);
char c=0;
while(c!=' '){
scanf("%c", &c);
u[n]=c-'0';
n++;
}
n-=2;
scanf("%d ", &k);
perm(1);
printf("%d ", q);
return 0;
}