<div class="hiddable" id="vj_description" style="font-family: 'times new roman'; font-size: 17px; color: rgb(34, 34, 34);"><div class="textBG" style="border-radius: 10px; padding: 10px; border-style: dotted; border-width: 2px; background-color: rgb(234, 235, 255);"><div class="panel_content">CC always becomes very depressed at the end of this month, he has checked his credit card yesterday, without any surprise, there are only 99.9 yuan left. he is too distressed and thinking about how to tide over the last days. Being inspired by the entrepreneurial spirit of "HDU CakeMan", he wants to sell some little things to make money. Of course, this is not an easy task.
As Christmas is around the corner, Boys are busy in choosing christmas presents to send to their girlfriends. It is believed that chain bracelet is a good choice. However, Things are not always so simple, as is known to everyone, girl's fond of the colorful decoration to make bracelet appears vivid and lively, meanwhile they want to display their mature side as college students. after CC understands the girls demands, he intends to sell the chain bracelet called CharmBracelet. The CharmBracelet is made up with colorful pearls to show girls' lively, and the most important thing is that it must be connected by a cyclic chain which means the color of pearls are cyclic connected from the left to right. And the cyclic count must be more than one. If you connect the leftmost pearl and the rightmost pearl of such chain, you can make a CharmBracelet. Just like the pictrue below, this CharmBracelet's cycle is 9 and its cyclic count is 2:
<center><img src="http://7xjob4.com1.z0.glb.clouddn.com/53f6d763e6047bb71352513fe2805f00" style="max-width: 100%;" alt="" /></center>
Now CC has brought in some ordinary bracelet chains, he wants to buy minimum number of pearls to make CharmBracelets so that he can save more money. but when remaking the bracelet, he can only add color pearls to the left end and right end of the chain, that is to say, adding to the middle is forbidden.
CC is satisfied with his ideas and ask you for help.</div><div class="panel_bottom"> </div></div></div><div class="hiddable" id="vj_input" style="font-family: 'times new roman'; font-size: 17px; color: rgb(34, 34, 34);"><p class="pst" style="font-family: Arial, Helvetica, sans-serif; font-size: 18pt; font-weight: bold; color: blue; margin-bottom: 0px;">Input</p><div class="textBG" style="border-radius: 10px; padding: 10px; border-style: dotted; border-width: 2px; background-color: rgb(234, 235, 255);"><div class="panel_content">The first line of the input is a single integer T ( 0 < T <= 100 ) which means the number of test cases.
Each test case contains only one line describe the original ordinary chain to be remade. Each character in the string stands for one pearl and there are 26 kinds of pearls being described by 'a' ~'z' characters. The length of the string Len: ( 3 <= Len <= 100000 ).</div><div class="panel_bottom"> </div></div></div><div class="hiddable" id="vj_output" style="font-family: 'times new roman'; font-size: 17px; color: rgb(34, 34, 34);"><p class="pst" style="font-family: Arial, Helvetica, sans-serif; font-size: 18pt; font-weight: bold; color: blue; margin-bottom: 0px;">Output</p><div class="textBG" style="border-radius: 10px; padding: 10px; border-style: dotted; border-width: 2px; background-color: rgb(234, 235, 255);"><div class="panel_content">For each case, you are required to output the minimum count of pearls added to make a CharmBracelet.</div><div class="panel_bottom"> </div></div></div><div class="hiddable" id="vj_sampleInput" style="font-family: 'times new roman'; font-size: 17px; color: rgb(34, 34, 34);"><p class="pst" style="font-family: Arial, Helvetica, sans-serif; font-size: 18pt; font-weight: bold; color: blue; margin-bottom: 0px;">Sample Input</p><div class="textBG" style="border-radius: 10px; padding: 10px; border-style: dotted; border-width: 2px; background-color: rgb(234, 235, 255);"><div class="panel_content"><pre style="white-space: pre-wrap; word-wrap: break-word;"><div style="font-family: 'Courier New', Courier, monospace;">3
aaa
abca
abcde </div>
这个问题需要kmp算法，求next数组，len-next[len] 为字符串的最小循环长度
<ol start="1" class="dp-cpp" style="padding: 0px; border: none; color: rgb(92, 92, 92); font-family: Consolas, 'Courier New', Courier, mono, serif; line-height: 26px; margin: 0px 0px 1px 45px !important;"><li class="alt" style="border-style: none none none solid; border-left-width: 3px; border-left-color: rgb(108, 226, 108); list-style: decimal-leading-zero outside; color: inherit; line-height: 18px; margin: 0px !important; padding: 0px 3px 0px 10px !important;"><span style="margin: 0px; padding: 0px; border: none; color: black; background-color: inherit;"><span class="comment" style="margin: 0px; padding: 0px; border: none; color: rgb(0, 130, 0); background-color: inherit;">如果有len%cir == 0,那么这个字符串就是已经是完美的字符串，不用添加任何字符；</span></span></li><li class="alt" style="border-style: none none none solid; border-left-width: 3px; border-left-color: rgb(108, 226, 108); list-style: decimal-leading-zero outside; color: inherit; line-height: 18px; margin: 0px !important; padding: 0px 3px 0px 10px !important;"><span style="color: rgb(0, 130, 0); background-color: inherit;">如果不是完美的那么需要添加的字符数就是cir - (len-(len/cir)*cir))，相当与需要在最后一个循环节上面添加几个。</span></li><li class="alt" style="border-style: none none none solid; border-left-width: 3px; border-left-color: rgb(108, 226, 108); list-style: decimal-leading-zero outside; color: inherit; line-height: 18px; margin: 0px !important; padding: 0px 3px 0px 10px !important;"><span style="color: rgb(0, 130, 0); background-color: inherit;"></span><ol start="1" class="dp-cpp" style="padding: 0px; border: none; color: rgb(92, 92, 92); font-family: Consolas, 'Courier New', Courier, mono, serif; line-height: 26px; margin: 0px 0px 1px 45px !important;"><li class="alt" style="border-style: none none none solid; border-left-width: 3px; border-left-color: rgb(108, 226, 108); list-style: decimal-leading-zero outside; color: inherit; line-height: 18px; margin: 0px !important; padding: 0px 3px 0px 10px !important;"><span style="margin: 0px; padding: 0px; border: none; color: black; background-color: inherit;"><span class="comment" style="margin: 0px; padding: 0px; border: none; color: rgb(0, 130, 0); background-color: inherit;">如果cir = 1，说明字符串只有一种字符例如“aaa” ;</span> </span></li><li style="border-style: none none none solid; border-left-width: 3px; border-left-color: rgb(108, 226, 108); list-style: decimal-leading-zero outside; line-height: 18px; margin: 0px !important; padding: 0px 3px 0px 10px !important; background-color: rgb(248, 248, 248);"><span style="margin: 0px; padding: 0px; border: none; color: black; background-color: inherit;"><span class="comment" style="margin: 0px; padding: 0px; border: none; color: rgb(0, 130, 0); background-color: inherit;"> 如果cir = m说明最小的循环节长度为m，那么至少还需m个；</span> </span></li><li class="alt" style="border-style: none none none solid; border-left-width: 3px; border-left-color: rgb(108, 226, 108); list-style: decimal-leading-zero outside; color: inherit; line-height: 18px; margin: 0px !important; padding: 0px 3px 0px 10px !important;"><span style="margin: 0px; padding: 0px; border: none; color: black; background-color: inherit;"><span class="comment" style="margin: 0px; padding: 0px; border: none; color: rgb(0, 130, 0); background-color: inherit;"> 如果m%cir == 0，说明已经不用添加了</span></span></li></ol>
</li></ol>
#include <stdio.h>
#include <stdlib.h>
#include<string.h>
char a[1000005];
int next[1000005];
int main()
{
int i,j,k;
int num;
int alen;
scanf("%d",&num);
while(num--){
scanf("%s",a);
alen=strlen(a);
next[0]=-1;
//a[alen]=' ';
j=0;
k=-1;
while(j<=alen){
if(k==-1||a[j]==a[k]){
++j;
++k;
/*if(a[j]==a[k]) next[j]=k+1;
else next[j]=next[k];*/
next[j]=k;
}
else k=next[k];
}
//for(i=0;i<=alen;i++) printf("%d",next[i]);
int t=alen-next[alen];
if(t!=alen&&alen%t==0)
printf("0\n");
else printf("%d\n",t-(alen%t));
}
return 0;
}
