Codeforces 625B - War of the Corporations

625B - War of the Corporations

分析：KMP，找出模式串在主串中出现的位置，然后总的个数减去重叠的个数就行

#include 
#include 
using namespace std;

const int N = 100002;
int next[33];
char S[N], T[33];
int slen, tlen;
int a[N],cnt;
void getNext()
{
    int j, k;
    j = 0; k = -1; next[0] = -1;
    while(j < tlen)
        if(k == -1 || T[j] == T[k])
            next[++j] = ++k;
        else
            k = next[k];

}

void KMP_Index()
{
    int i = 0, j = 0;
    getNext();
    while(1){
         while(i < slen && j < tlen)
        {
            if(j == -1 || S[i] == T[j])
            {
                i++; j++;
            }
            else
                j = next[j];
        }
        if(j == tlen)
            a[cnt++]=i-tlen,j=0;
        if(i>=slen)break;
    }

}
int main()
{

    int TT;
    int i, cc;

        cin>>S>>T;
        slen = strlen(S);
        tlen = strlen(T);
        cnt=0;
        KMP_Index();
        int ans=0;
        for( i=0;i