16 lines
370 B
C++
16 lines
370 B
C++
#include <bits/stdc++.h>
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using namespace std;
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const int N = 1000010;
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int n, ne[N];
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char p[N];
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int main() {
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cin >> n >> (p + 1);
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// 求模式串ne数组
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for (int i = 2, j = 0; i <= n; i++) {
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while (j && p[i] != p[j + 1]) j = ne[j];
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if (p[i] == p[j + 1]) j++;
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ne[i] = j;
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}
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printf("%d", n - ne[n]);
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return 0;
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} |