标签:hash 11019 int Matcher long maxn rint ha Matrix
#include <bits/stdc++.h>
using namespace std;
#define rint register int
#define rll register long long
typedef long long ll;
const int maxn = 1e3 + 100;
const int base1 = 233, base2 = 2333;
char a[maxn][maxn], b[maxn][maxn];
unsigned long long ha[maxn][maxn], hb[maxn][maxn];
int main() {
freopen("in.txt", "r", stdin);
rint _;
scanf("%d", &_);
while (_--) {
rint n, m, x, y;
scanf("%d %d", &n, &m);
for (rint i = 1; i <= n; i++)
scanf("%s", a[i] + 1);
scanf("%d %d", &x, &y);
for (rint i = 1; i <= x; i++)
scanf("%s", b[i] + 1);
register unsigned long long p1 = 1, p2 = 1;
for (rint i = 1; i <= x; i++) {
p2 *= base2;
}
for (rint i = 1; i <= y; i++) {
p1 *= base1;
}
for (rint i = 1; i <= x; i++) {
for (rint j = 1; j <= y; j++) {
hb[i][j] = (b[i][j] - 'a') + hb[i][j - 1] * base1 + hb[i - 1][j] * base2 -
hb[i - 1][j - 1] * base1 * base2;
}
}
rint ans = 0;
for (rint i = 1; i <= n; i++) {
for (rint j = 1; j <= m; j++) {
ha[i][j] = (a[i][j] - 'a') + ha[i][j - 1] * base1 + ha[i - 1][j] * base2 -
ha[i - 1][j - 1] * base1 * base2;
if (i >= x && j >= y &&
hb[x][y] == ha[i][j] - ha[i - x][j] * p2 - ha[i][j - y] * p1 + ha[i - x][j - y] * p1 * p2) {
ans++;
}
}
}
printf("%d\n", ans);
}
return 0;
}
标签:hash,11019,int,Matcher,long,maxn,rint,ha,Matrix 来源: https://www.cnblogs.com/albert-biu/p/11319358.html
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