結果
| 問題 |
No.2626 Similar But Different Name
|
| コンテスト | |
| ユーザー |
maeshun
|
| 提出日時 | 2024-02-09 23:46:17 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 767 ms / 3,000 ms |
| コード長 | 3,180 bytes |
| コンパイル時間 | 4,353 ms |
| コンパイル使用メモリ | 253,388 KB |
| 最終ジャッジ日時 | 2025-02-19 04:17:46 |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 35 |
ソースコード
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i, n) for(int i=0;i<(n);++i)
#define rep1(i, n) for(int i=1;i<=(n);i++)
#define ll long long
using mint = modint998244353;
using P = pair<ll,ll>;
using lb = long double;
using T = tuple<ll, ll, ll>;
#ifdef LOCAL
# include <debug_print.hpp>
# define dbg(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
# define dbg(...) (static_cast<void>(0))
#endif
template< unsigned mod >
struct RollingHash {
vector< unsigned > hashed, power;
inline unsigned mul(unsigned a, unsigned b) const {
unsigned long long x = (unsigned long long) a * b;
unsigned xh = (unsigned) (x >> 32), xl = (unsigned) x, d, m;
asm("divl %4; \n\t" : "=a" (d), "=d" (m) : "d" (xh), "a" (xl), "r" (mod));
return m;
}
//コンストラクタ(文字列)
RollingHash(const string &s, unsigned base = 10007) {
int sz = (int) s.size();
hashed.assign(sz + 1, 0);
power.assign(sz + 1, 0);
power[0] = 1;
for(int i = 0; i < sz; i++) {
power[i + 1] = mul(power[i], base);
hashed[i + 1] = mul(hashed[i], base) + s[i];
if(hashed[i + 1] >= mod) hashed[i + 1] -= mod;
}
}
//[l,r)のハッシュ値を得る
unsigned get(int l, int r) const {
unsigned ret = hashed[r] + mod - mul(hashed[l], power[r - l]);
if(ret >= mod) ret -= mod;
return ret;
}
//ハッシュをつなげる
unsigned connect(unsigned h1, int h2, int h2len) const {
unsigned ret = mul(h1, power[h2len]) + h2;
if(ret >= mod) ret -= mod;
return ret;
}
int LCP(const RollingHash< mod > &b, int l1, int r1, int l2, int r2) {
int len = min(r1 - l1, r2 - l2);
int low = -1, high = len + 1;
while(high - low > 1) {
int mid = (low + high) / 2;
if(get(l1, l1 + mid) == b.get(l2, l2 + mid)) low = mid;
else high = mid;
}
return (low);
}
};
using RH = RollingHash< 1000000007 >;
//segtreeに乗せる用
// long long mod = 2147483647;
// struct S {
// long long hash, pow;
// };
// S op(S a, S b){
// long long na = a.hash * b.pow + b.hash;
// na %= mod;
// return {na, (a.pow * b.pow) % mod};
// }
// S e(){
// return {0,1};
// }
int main()
{
int n, m, k;
cin >> n >> m >> k;
string s, t;
cin >> s >> t;
reverse(t.begin(),t.end());
vector<ll> a(n), b(m), d(n), e(n);
rep(i,n){
if(isupper(s[i])) a[i] = 1;
else {
a[i] = -1;
d[i] = 1;
}
}
rep(i,m){
if(isupper(t[i])) b[i] = 1;
else {
b[i] = -1;
e[i] = 1;
}
}
dbg(a,b);
vector<ll> f, g;
f = convolution_ll(a, b);
g = convolution_ll(d, e);
reverse(t.begin(),t.end());
rep(i,n){
if(isupper(s[i])) s[i] = s[i]+32;
}
rep(i,m){
if(isupper(t[i])) t[i]=t[i]+32;
}
dbg(s, t);
RH S(s), T(t);
int ans = 0;
rep(i,n){
if(T.get(0,m)!=S.get(i,i+m)) continue;
int h = g[i+m-1];
int c = m-f[i+m-1];
c/=2;
dbg(c);
if(c<=k && c>=1) ans++;
}
cout << ans << endl;
return 0;
}
maeshun