結果

問題 No.2454 Former < Latter
ユーザー pitP
提出日時 2023-09-01 22:47:12
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 267 ms / 2,000 ms
コード長 2,258 bytes
コンパイル時間 4,715 ms
コンパイル使用メモリ 252,804 KB
最終ジャッジ日時 2025-02-16 17:05:53
ジャッジサーバーID
(参考情報)
judge2 / judge1
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 1
other AC * 23
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
istream &operator>>(istream &is, modint &a) { long long v; is >> v; a = v; return is; }
ostream &operator<<(ostream &os, const modint &a) { return os << a.val(); }
istream &operator>>(istream &is, modint998244353 &a) { long long v; is >> v; a = v; return is; }
ostream &operator<<(ostream &os, const modint998244353 &a) { return os << a.val(); }
istream &operator>>(istream &is, modint1000000007 &a) { long long v; is >> v; a = v; return is; }
ostream &operator<<(ostream &os, const modint1000000007 &a) { return os << a.val(); }
typedef long long ll;
typedef vector<vector<int>> Graph;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define rep(i,n) for (int i = 0;i < (int)(n); i++)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define my_sort(x) sort(x.begin(), x.end())
#define my_max(x) *max_element(all(x))
#define my_min(x) *min_element(all(x))
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
const int INF = (1<<30) - 1;
const ll LINF = (1LL<<62) - 1;
const int MOD = 998244353;
const int MOD2 = 1e9+7;
const double PI = acos(-1);
vector<int> di = {1,0,-1,0};
vector<int> dj = {0,1,0,-1};
#ifdef LOCAL
# include <debug_print.hpp>
# define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
# define debug(...) (static_cast<void>(0))
#endif
void solve(){
int N; cin >> N;
string S; cin >> S;
auto z_arr = z_algorithm(S);
debug(z_arr);
int ans = 0;
for(int i=1;i<N;i++){
if(S[0] != S[i]){
ans += (S[0] < S[i]);
}
else{
if (z_arr[i] < i){
if(i + z_arr[i] == N) continue;
else if(S[z_arr[i]] < S[i + z_arr[i]])ans++;
}
else if (z_arr[i] == i){
if (i + z_arr[i] < N)ans++;
}
else{
ans++;
}
}
debug(i, ans);
}
cout << ans << endl;
}
int main(){
cin.tie(0);
ios_base::sync_with_stdio(false);
int T; cin >> T;
while(T--)solve();
}
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