Cod sursa(job #1481807)
Utilizator | Data | 5 septembrie 2015 12:13:18 | |
---|---|---|---|
Problema | Prefix | Scor | 0 |
Compilator | c | Status | done |
Runda | Arhiva de probleme | Marime | 0.5 kb |
#include<stdio.h>
#include<string.h>
char s[1000001];
int n,k,p[1000001],i,d,t;
int main() {
freopen("prefix.in","r",stdin),freopen("prefix.out","w",stdout),scanf("%d\n",&t);
while(t--) {
scanf("%s\n",s+1),k=p[1]=d=0,n=strlen(s+1);
for(i=2;i<=n;i++) {
for(;k&&s[k+1]!=s[i];k=p[k]);
if(s[k+1]==s[i])
k++;
p[i]=k;
}
for(i=n;i>1&&!d;i--)
if(k&&i==(i-p[i])*(i/(i-p[i])))
d=i;
printf("%d\n",d);
}
}