結果
| 問題 |
No.1909 Detect from Substrings
|
| コンテスト | |
| ユーザー |
keijak
|
| 提出日時 | 2022-04-23 10:31:57 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 10 ms / 2,000 ms |
| コード長 | 3,147 bytes |
| コンパイル時間 | 5,627 ms |
| コンパイル使用メモリ | 203,928 KB |
| 最終ジャッジ日時 | 2025-01-28 21:04:17 |
|
ジャッジサーバーID (参考情報) |
judge4 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 36 |
ソースコード
#include <bits/stdc++.h>
#define REP_(i, a_, b_, a, b, ...) for (int i = (a), END_##i = (b); i < END_##i; ++i)
#define REP(i, ...) REP_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__)
#define ALL(x) std::begin(x), std::end(x)
using Int = long long;
using Uint = unsigned long long;
using Real = long double;
template<typename T, typename U>
inline bool chmax(T &a, U b) { return a < b and ((a = b), true); }
template<typename T, typename U>
inline bool chmin(T &a, U b) { return a > b and ((a = b), true); }
template<typename T>
inline int ssize(const T &a) { return (int) a.size(); }
template<typename T>
constexpr T kBigVal = std::numeric_limits<T>::max() / 2;
struct CastInput {
template<typename T>
operator T() const {
T x;
std::cin >> x;
return x;
}
struct Sized {
int n;
template<typename T>
operator T() const {
T xs(n);
for (auto &x: xs) std::cin >> x;
return xs;
}
};
Sized operator()(int n) const { return {n}; }
} in;
template<typename Container>
std::ostream &print_seq(const Container &seq,
const char *sep = " ",
const char *ends = "\n",
std::ostream &os = std::cout) {
const auto itl = std::begin(seq), itr = std::end(seq);
for (auto it = itl; it != itr; ++it) {
if (it != itl) os << sep;
os << *it;
}
return os << ends;
}
template<typename T>
inline std::ostream &print_one(const T &x, char endc) {
if constexpr (std::is_same<T, bool>::value) {
return std::cout << (x ? "Yes" : "No") << endc;
} else {
return std::cout << x << endc;
}
}
template<typename T>
inline std::ostream &print(const T &x) { return print_one(x, '\n'); }
template<typename T, typename... Ts>
std::ostream &print(const T &head, Ts... tail) {
return print_one(head, ' '), print(tail...);
}
inline std::ostream &print() { return std::cout << '\n'; }
void exit_() { std::cout.flush(), std::cerr.flush(), std::_Exit(0); }
#ifdef MY_DEBUG
#include "debug_dump.hpp"
#include "backward.hpp"
backward::SignalHandling kSignalHandling;
#else
#define DUMP(...)
#define cerr if(false)cerr
#endif
using namespace std;
Int solve() {
int n = in, m = in;
vector<string> S = in(n);
auto is_subseq = [&](int j, string_view T) -> bool {
int plen = 0, slen = 0;
while (plen < m and S[j][plen] == T[plen]) ++plen;
while (slen < m and S[j][m - 1 - slen] == T[m - slen]) ++slen;
return (plen + slen >= m);
};
std::set < string > candidates;
{
int i = 0;
while (i < m and S[0][i] == S[1][i]) ++i;
candidates.insert(S[0].substr(0, i) + S[0][i] + S[1].substr(i));
candidates.insert(S[0].substr(0, i) + S[1][i] + S[0].substr(i));
}
DUMP(candidates);
int count = 0;
for (const string &T: candidates) {
bool ok = true;
for (int j = 0; j < n; ++j) {
if (not is_subseq(j, T)) {
ok = false;
break;
}
}
if (ok) ++count;
}
return count;
}
int main() {
std::ios::sync_with_stdio(false), cin.tie(nullptr);
cout << std::fixed << std::setprecision(18);
const int T = 1;//in;
REP(t, T) { print(solve()); }
exit_();
}
keijak